A 39-year-old man presents to the emergency department with a 10-hour history of severe right iliac fossa pain, fever, and vomiting. Examination reveals temperature 38.8°C, pulse 118 bpm, BP 108/68 mmHg, and peritonism in the right lower quadrant. Blood tests show WCC 18.3 × 10⁹/L, CRP 156 mg/L, and lactate 2.8 mmol/L. CT scan demonstrates a grossly dilated appendix (diameter 15 mm) with surrounding inflammatory changes, free fluid, and multiple locules of free intraperitoneal gas. He is started on IV fluid resuscitation and broad-spectrum antibiotics. At emergency laparoscopy, there is purulent peritonitis with a perforated gangrenous appendix. After appendicectomy and peritoneal washout, what is the most important factor determining whether primary skin closure should be performed?
Q132
A 55-year-old woman with a family history of colorectal cancer (father diagnosed at age 58, paternal uncle at age 62) presents for screening colonoscopy. Multiple polyps are identified: a 15 mm tubulovillous adenoma with high-grade dysplasia in the sigmoid colon (completely excised), a 7 mm tubular adenoma with low-grade dysplasia in the transverse colon (completely excised), and a 4 mm hyperplastic polyp in the rectum. All polyps are removed completely with clear margins. According to UK guidelines, what is the most appropriate surveillance colonoscopy interval for this patient?
Q133
A 73-year-old man presents to the emergency department with a 5-hour history of sudden onset severe right groin pain. He describes feeling a 'pop' while lifting heavy furniture. On examination, there is a tense, erythematous, exquisitely tender swelling inferior to the inguinal ligament and medial to the femoral vein. The overlying skin is warm and shiny. He is unable to stand straight due to pain. Observations show temperature 38.2°C, pulse 108 bpm, BP 142/88 mmHg. Urgent surgical repair is planned. During surgery, what anatomical structure forms the medial border of the femoral canal through which this hernia has passed?
Q134
A 66-year-old man with a history of chronic constipation and diverticular disease presents with a 3-day history of left lower quadrant pain, fever, and altered bowel habit. CT scan shows sigmoid diverticulitis with a 6 cm pelvic abscess. He is treated with IV antibiotics and CT-guided drainage of the abscess with resolution of symptoms. Colonoscopy 6 weeks later shows multiple diverticula but also identifies a suspicious 2.5 cm stricture in the sigmoid colon. Biopsies show fragments of inflamed mucosa with no definite malignancy but are insufficient for confident exclusion. What is the most appropriate next step?
Q135
A 47-year-old woman presents to the emergency department with a 30-hour history of generalised abdominal pain that initially started in the central abdomen and has now localised to the right iliac fossa. She reports anorexia, nausea, and has vomited twice. On examination, temperature is 38.4°C, pulse 98 bpm, BP 118/72 mmHg. There is tenderness and guarding in the right iliac fossa with positive rebound tenderness. WCC 16.2 × 10⁹/L, CRP 112 mg/L. CT scan shows an inflamed retrocaecal appendix with small locules of free gas and a 4 cm pericaecal collection. What is the most appropriate management?
Q136
A 61-year-old man is diagnosed with a T3 N1 M0 adenocarcinoma of the sigmoid colon following colonoscopy and staging CT. He undergoes elective laparoscopic sigmoid colectomy with primary anastomosis. Histology confirms a moderately differentiated adenocarcinoma with 3 out of 18 lymph nodes positive for metastases, clear resection margins, and no lymphovascular invasion. What is the most appropriate adjuvant treatment recommendation?
Q137
A 29-year-old woman presents with a 20-hour history of right iliac fossa pain and fever. She is sexually active and her last menstrual period was 3 weeks ago. On examination, temperature is 38.1°C, there is right iliac fossa tenderness with guarding, and cervical excitation on vaginal examination. Urinary pregnancy test is negative. WCC is 14.2 × 10⁹/L and CRP 68 mg/L. Transvaginal ultrasound shows a normal appearing appendix, free fluid in the pelvis, and a complex right adnexal mass. What is the most appropriate next investigation?
Q138
A 52-year-old man presents to the emergency department with a 4-hour history of severe pain in his left groin. He has a past history of a left inguinal hernia that has been intermittently symptomatic for 2 years. On examination, there is a tender, tense, irreducible swelling in the left groin below and lateral to the pubic tubercle. His temperature is 37.9°C, pulse 110 bpm, and BP 132/84 mmHg. What is the most appropriate immediate management?
Q139
A 68-year-old man undergoes elective colonoscopy for surveillance following previous adenoma removal. A 12 mm sessile polyp is identified in the transverse colon and removed by endoscopic mucosal resection. Histology shows a tubular adenoma with high-grade dysplasia and focal invasion into the submucosa (pT1), measuring 2 mm from the resection margin. There is no lymphovascular invasion. What is the most appropriate management?
Q140
A 42-year-old nulliparous woman presents with a 36-hour history of right iliac fossa pain, nausea, and fever. On examination, she has temperature 38.2°C, tenderness in the right iliac fossa with rebound tenderness, and positive Rovsing's sign. Blood tests show WCC 15.8 × 10⁹/L and CRP 87 mg/L. A CT scan shows an inflamed appendix with surrounding fat stranding but no perforation or abscess. Which scoring system would be most appropriate to assess the likelihood of appendicitis in this patient and guide management decisions?
General Surgery UK Medical PG Practice Questions and MCQs
Question 131: A 39-year-old man presents to the emergency department with a 10-hour history of severe right iliac fossa pain, fever, and vomiting. Examination reveals temperature 38.8°C, pulse 118 bpm, BP 108/68 mmHg, and peritonism in the right lower quadrant. Blood tests show WCC 18.3 × 10⁹/L, CRP 156 mg/L, and lactate 2.8 mmol/L. CT scan demonstrates a grossly dilated appendix (diameter 15 mm) with surrounding inflammatory changes, free fluid, and multiple locules of free intraperitoneal gas. He is started on IV fluid resuscitation and broad-spectrum antibiotics. At emergency laparoscopy, there is purulent peritonitis with a perforated gangrenous appendix. After appendicectomy and peritoneal washout, what is the most important factor determining whether primary skin closure should be performed?
A. Duration of symptoms prior to surgery being less than 24 hours
B. The surgical incision classification as clean-contaminated (class II) allowing primary closure
C. Degree of peritoneal contamination and ability to achieve adequate source control (Correct Answer)
D. Pre-operative lactate level being less than 4 mmol/L indicating absence of severe sepsis
E. Patient's age being under 40 years with good physiological reserve
Explanation: ***Degree of peritoneal contamination and ability to achieve adequate source control***
- The decision for **primary skin closure** in cases of perforated appendicitis is primarily governed by the **degree of bacterial contamination** in the surgical field.
- **Adequate source control**, which involves complete removal of the infected appendix and thorough **peritoneal washout**, significantly reduces the bacterial load, allowing for safer primary closure and minimizing the risk of **surgical site infection (SSI)**.
*Duration of symptoms prior to surgery being less than 24 hours*
- While a shorter symptom duration might sometimes correlate with less severe inflammation, the actual **intraoperative findings** of **purulent peritonitis** and **gangrenous perforation** are the definitive factors.
- The severity of contamination observed directly during surgery overrides any pre-operative timeline when deciding on wound management.
*The surgical incision classification as clean-contaminated (class II) allowing primary closure*
- A **perforated appendix** with **purulent peritonitis** is classified as a **Contaminated (Class III)** or **Dirty/Infected (Class IV)** wound, not clean-contaminated (Class II).
- **Class II** wounds are typically those where the gastrointestinal tract is entered under controlled conditions without significant spillage, which is not the scenario here with gross infection.
*Pre-operative lactate level being less than 4 mmol/L indicating absence of severe sepsis*
- **Lactate levels** reflect the patient's systemic physiological response and tissue perfusion, indicating overall stability or severity of sepsis, but not the local wound environment.
- While a stable patient can tolerate surgery, systemic markers do not directly dictate the local wound's suitability for **primary closure** in the face of significant contamination.
*Patient's age being under 40 years with good physiological reserve*
- A patient's **age** and **physiological reserve** are important for overall recovery and healing capacity, but they are secondary to the local wound conditions in deciding closure.
- The primary determinants for **wound closure technique** in a contaminated field are the extent of **peritoneal contamination** and the effectiveness of **source control**, regardless of the patient's age.
Question 132: A 55-year-old woman with a family history of colorectal cancer (father diagnosed at age 58, paternal uncle at age 62) presents for screening colonoscopy. Multiple polyps are identified: a 15 mm tubulovillous adenoma with high-grade dysplasia in the sigmoid colon (completely excised), a 7 mm tubular adenoma with low-grade dysplasia in the transverse colon (completely excised), and a 4 mm hyperplastic polyp in the rectum. All polyps are removed completely with clear margins. According to UK guidelines, what is the most appropriate surveillance colonoscopy interval for this patient?
A. 1 year (Correct Answer)
B. 3 years
C. 5 years
D. 6 months
E. No surveillance required - return to routine screening
Explanation: ***1 year***- According to **UK BSG/ACPGBI guidelines**, patients with **high-risk** criteria such as a large (>10mm) adenoma with **high-grade dysplasia** or villous components, combined with a significant **family history**, require intensive surveillance.- The presence of a **15 mm tubulovillous adenoma** with high-grade dysplasia necessitates a follow-up at 1 year to ensure no recurrence at the site and to monitor for rapid progression in a patient with a strong **genetic predisposition** (two relatives with CRC).*3 years*- This interval is typically reserved for **intermediate-risk** patients, such as those with 1-2 adenomas where at least one is **≥10 mm** but without the high-risk family history or complexity seen here.- While a single high-grade dysplasia polyp might sometimes fall into this category, the combination of **multiple adenomas** and family history pushes the clinical concern higher.*5 years*- This is indicated for **low-risk** patients who have only 1-2 small (<10mm) **tubular adenomas** with low-grade dysplasia.- It is inappropriate for this patient due to the **15 mm size** and the presence of **villous architecture** and high-grade dysplasia.*6 months*- A 6-month interval is usually reserved for cases where there is concern about **incomplete excision** of a large non-pedunculated polyp (PIECES) or very high-risk malignant potential.- Since the polyps were reported as **completely excised** with clear margins, a 1-year interval is more appropriate than 6 months.*No surveillance required - return to routine screening*- This is only recommended for patients with only **small hyperplastic polyps** in the rectum or no adenomas found during the index colonoscopy.- This patient has **premalignant adenomas** (tubulovillous and tubular), making them ineligible to return to routine population screening at this stage.
Question 133: A 73-year-old man presents to the emergency department with a 5-hour history of sudden onset severe right groin pain. He describes feeling a 'pop' while lifting heavy furniture. On examination, there is a tense, erythematous, exquisitely tender swelling inferior to the inguinal ligament and medial to the femoral vein. The overlying skin is warm and shiny. He is unable to stand straight due to pain. Observations show temperature 38.2°C, pulse 108 bpm, BP 142/88 mmHg. Urgent surgical repair is planned. During surgery, what anatomical structure forms the medial border of the femoral canal through which this hernia has passed?
A. Femoral vein
B. Inguinal ligament
C. Lacunar ligament (Gimbernat's ligament) (Correct Answer)
D. Pectineal ligament (Cooper's ligament)
E. Iliopsoas muscle
Explanation: ***Lacunar ligament (Gimbernat's ligament)***- The **lacunar ligament** forms the sharp, rigid **medial border** of the femoral canal and is responsible for the high risk of **strangulation** in femoral hernias.- During surgical repair, this ligament is the structure typically incised or released to reduce the incarcerated contents, while being mindful of a potential **aberrant obturator artery**.*Femoral vein*- The **femoral vein** forms the **lateral border** of the femoral canal and must be carefully protected during surgical repair to avoid venous injury.- It is contained within the middle compartment of the **femoral sheath**, as opposed to the femoral canal which is the most medial compartment.*Inguinal ligament*- The **inguinal ligament** (Poupart's ligament) forms the **anterior border** of the femoral canal.- Femoral hernias are clinically identified by their location **inferior** to this ligament, distinguishing them from inguinal hernias.*Pectineal ligament (Cooper's ligament)*- The **pectineal ligament** forms the **posterior border** of the femoral canal, lying along the pectineal line of the **superior pubic ramus**.- It is frequently used as a strong anchoring point for sutures or mesh during the **McVay repair** of femoral hernias.*Iliopsoas muscle*- The **iliopsoas muscle** is located far more laterally and does not form any of the four direct boundaries of the **femoral canal**.- It passes under the inguinal ligament in the **lacuna musculorum**, separated from the femoral canal by the iliopectineal arch and the femoral vessels.
Question 134: A 66-year-old man with a history of chronic constipation and diverticular disease presents with a 3-day history of left lower quadrant pain, fever, and altered bowel habit. CT scan shows sigmoid diverticulitis with a 6 cm pelvic abscess. He is treated with IV antibiotics and CT-guided drainage of the abscess with resolution of symptoms. Colonoscopy 6 weeks later shows multiple diverticula but also identifies a suspicious 2.5 cm stricture in the sigmoid colon. Biopsies show fragments of inflamed mucosa with no definite malignancy but are insufficient for confident exclusion. What is the most appropriate next step?
A. Repeat colonoscopy in 3 months with multiple biopsies from the stricture
B. CT colonography to further characterise the stricture
C. Proceed to elective laparoscopic sigmoid colectomy with primary anastomosis (Correct Answer)
D. MRI pelvis to assess for extramural tumour extension
E. Flexible sigmoidoscopy with endoscopic ultrasound-guided biopsy of stricture
Explanation: ***Proceed to elective laparoscopic sigmoid colectomy with primary anastomosis*** - A **suspicious stricture** following complicated diverticulitis, especially when biopsies are **insufficient for confident exclusion of malignancy**, necessitates surgical resection for definitive diagnosis and treatment. - The patient's history of **complicated diverticulitis with a pelvic abscess** (Hinchey II) is an independent indication for elective **sigmoid colectomy** to prevent future severe recurrences.*Repeat colonoscopy in 3 months with multiple biopsies from the stricture* - Relying on repeat biopsies risks delaying the diagnosis and treatment of a potential **occult malignancy** that may be masked by significant **peridiverticular inflammation**. - Endoscopic biopsies, especially in a fibrotic or inflamed stricture, can frequently be **non-diagnostic**, failing to reach deeper malignant cells.*CT colonography to further characterise the stricture* - While helpful for visualizing the colon, **CT colonography** provides morphological information but cannot offer **histopathological confirmation** or definitively differentiate benign from malignant strictures. - This approach does not address the critical need for **definitive tissue diagnosis** and surgical management for both the stricture and the history of complicated diverticulitis.*MRI pelvis to assess for extramural tumour extension* - **MRI pelvis** is primarily indicated for local staging of **known rectal cancer** to evaluate tumor depth and nodal involvement, not for the initial differentiation of a colonic stricture. - Without a confirmed diagnosis of malignancy, assessing for extramural extension is premature and would not alter the immediate need for a definitive diagnostic and therapeutic procedure.*Flexible sigmoidoscopy with endoscopic ultrasound-guided biopsy of stricture* - **Endoscopic ultrasound (EUS)** is not standard for evaluating or biopsying suspicious **sigmoid strictures**, as its utility is limited by technical challenges in a narrowed, angulated sigmoid colon. - Even if technically feasible, an EUS-guided biopsy might still be **insufficient to confidently exclude malignancy**, leaving the diagnostic dilemma unresolved and delaying definitive treatment.
Question 135: A 47-year-old woman presents to the emergency department with a 30-hour history of generalised abdominal pain that initially started in the central abdomen and has now localised to the right iliac fossa. She reports anorexia, nausea, and has vomited twice. On examination, temperature is 38.4°C, pulse 98 bpm, BP 118/72 mmHg. There is tenderness and guarding in the right iliac fossa with positive rebound tenderness. WCC 16.2 × 10⁹/L, CRP 112 mg/L. CT scan shows an inflamed retrocaecal appendix with small locules of free gas and a 4 cm pericaecal collection. What is the most appropriate management?
A. Immediate laparoscopic appendicectomy with drainage of collection
B. CT-guided percutaneous drainage of collection followed by interval appendicectomy at 6-8 weeks (Correct Answer)
C. Open appendicectomy via right lower quadrant incision with washout
D. Conservative management with IV antibiotics alone for 48-72 hours followed by reassessment
E. Emergency laparotomy with right hemicolectomy
Explanation: ***CT-guided percutaneous drainage of collection followed by interval appendicectomy at 6-8 weeks***- The presence of a **4 cm pericaecal collection** (abscess) in a clinically stable patient mandates initial **CT-guided percutaneous drainage** for effective source control.- This approach, combined with **IV antibiotics**, allows acute inflammation to resolve, facilitating a safer, elective **interval appendicectomy** at 6-8 weeks and reducing surgical complications. *Immediate laparoscopic appendicectomy with drainage of collection*- Performing immediate surgery on an established **appendiceal abscess** is technically challenging due to dense inflammation and adhesions, increasing the risk of **bowel injury** or conversion to open surgery.- Operating in an acutely inflamed field heightens the incidence of **postoperative complications**, including incomplete drainage, fistula formation, and wound infection. *Open appendicectomy via right lower quadrant incision with washout*- Similar to the laparoscopic approach, immediate open surgery for an established abscess carries a high risk of **wound infection** and other **postoperative morbidities** due to the inflamed tissues.- **Extensive peritoneal washout** in the presence of a contained abscess is not generally recommended as it can potentially spread the infection rather than localize it. *Conservative management with IV antibiotics alone for 48-72 hours followed by reassessment*- While IV antibiotics are essential, a **4 cm pericaecal abscess** is unlikely to resolve completely with antibiotics alone and typically requires **mechanical drainage** for effective source control.- Relying solely on antibiotics for a large collection increases the risk of **treatment failure**, prolonged sepsis, and potential complications like rupture. *Emergency laparotomy with right hemicolectomy*- A **right hemicolectomy** is an aggressive procedure with high morbidity, not indicated for a localized **appendiceal abscess** in a stable patient without signs of malignancy or extensive caecal necrosis.- This major surgery is usually reserved for cases of suspected or confirmed **appendiceal malignancy** or extensive **caecal base involvement**, which are not present in this scenario.
Question 136: A 61-year-old man is diagnosed with a T3 N1 M0 adenocarcinoma of the sigmoid colon following colonoscopy and staging CT. He undergoes elective laparoscopic sigmoid colectomy with primary anastomosis. Histology confirms a moderately differentiated adenocarcinoma with 3 out of 18 lymph nodes positive for metastases, clear resection margins, and no lymphovascular invasion. What is the most appropriate adjuvant treatment recommendation?
A. No adjuvant therapy required; surveillance with CEA monitoring and colonoscopy
B. Adjuvant chemotherapy with FOLFOX (5-FU, leucovorin, and oxaliplatin) for 6 months (Correct Answer)
C. Adjuvant radiotherapy to the pelvis followed by 6 months of capecitabine
D. Short-course adjuvant chemotherapy with capecitabine monotherapy for 3 months
E. Neoadjuvant chemoradiotherapy followed by repeat staging
Explanation: ***Adjuvant chemotherapy with FOLFOX (5-FU, leucovorin, and oxaliplatin) for 6 months***- This patient has **Stage III (T3 N1 M0)** colon cancer, indicated by **3 out of 18 lymph nodes positive for metastases**. Adjuvant chemotherapy is crucial for such cases to reduce the risk of recurrence.- The **FOLFOX** regimen (5-FU, leucovorin, and oxaliplatin) for 6 months is the established **standard of care** for resected Stage III colon cancer, significantly improving disease-free and overall survival.*No adjuvant therapy required; surveillance with CEA monitoring and colonoscopy*- **Surveillance alone** is insufficient for Stage III colon cancer due to the high risk of **micrometastatic disease** confirmed by lymph node involvement.- This approach is typically reserved for patients with **Stage I** or low-risk **Stage II** disease where the benefits of chemotherapy do not outweigh the risks.*Adjuvant radiotherapy to the pelvis followed by 6 months of capecitabine*- **Radiotherapy** is a primary adjuvant treatment modality for locally advanced **rectal cancer** but is generally **not indicated** for colon cancer.- The sigmoid colon is a **mobile intraperitoneal organ**, making targeted pelvic radiotherapy ineffective and associated with significant **small bowel toxicity**.*Short-course adjuvant chemotherapy with capecitabine monotherapy for 3 months*- While 3 months of adjuvant therapy (e.g., CAPOX) can be considered for **low-risk Stage III** colon cancer in specific scenarios, **capecitabine monotherapy** is less efficacious than combination regimens.- The **standard of care** for most fit patients with Stage III colon cancer remains a **combination regimen** like FOLFOX for 6 months due to superior outcomes.*Neoadjuvant chemoradiotherapy followed by repeat staging*- **Neoadjuvant therapy** (pre-operative) is primarily used for locally advanced **rectal cancer** to downstage the tumor, facilitate R0 resection, and improve outcomes.- For **colon cancer**, surgery is typically the **initial treatment**, and neoadjuvant therapy is only considered in select cases of **locally unresectable** or very advanced tumors.
Question 137: A 29-year-old woman presents with a 20-hour history of right iliac fossa pain and fever. She is sexually active and her last menstrual period was 3 weeks ago. On examination, temperature is 38.1°C, there is right iliac fossa tenderness with guarding, and cervical excitation on vaginal examination. Urinary pregnancy test is negative. WCC is 14.2 × 10⁹/L and CRP 68 mg/L. Transvaginal ultrasound shows a normal appearing appendix, free fluid in the pelvis, and a complex right adnexal mass. What is the most appropriate next investigation?
A. CT scan of abdomen and pelvis with IV contrast
B. High vaginal and endocervical swabs for microscopy, culture, and NAAT for chlamydia and gonorrhoea (Correct Answer)
C. Diagnostic laparoscopy with inspection of pelvis and appendix
D. MRI pelvis without contrast to further characterise the adnexal mass
E. Repeat ultrasound in 48 hours following antibiotic therapy
Explanation: ***High vaginal and endocervical swabs for microscopy, culture, and NAAT for chlamydia and gonorrhoea***
- The patient's presentation with **right iliac fossa pain**, **fever**, **cervical excitation**, **elevated inflammatory markers**, and a **complex right adnexal mass** strongly indicates **Pelvic Inflammatory Disease (PID)**.
- Identifying the causative organisms, particularly **Chlamydia trachomatis** and **Neisseria gonorrhoeae** via **NAAT**, is crucial for targeted antibiotic therapy and managing this sexually transmitted infection.
*CT scan of abdomen and pelvis with IV contrast*
- While a CT scan can characterize pelvic masses, it exposes the patient to **ionizing radiation**, which should be avoided in young women if the diagnosis can be made through other means.
- The transvaginal ultrasound has already provided sufficient anatomical information (normal appendix, complex adnexal mass), making microbiological investigation the more immediate next step for guiding treatment.
*Diagnostic laparoscopy with inspection of pelvis and appendix*
- **Laparoscopy** is an **invasive surgical procedure** and is generally reserved for cases of diagnostic uncertainty or failure of initial medical management, or for surgical intervention like abscess drainage.
- It is not the most appropriate *next* investigation when the primary goal is to identify the infectious agent and initiate conservative treatment.
*MRI pelvis without contrast to further characterise the adnexal mass*
- **MRI** offers excellent soft tissue contrast for pelvic pathology but is often less readily available and more time-consuming than ultrasound in an acute setting.
- Crucially, MRI provides anatomical detail but does not offer the essential **microbiological diagnosis** needed to effectively treat the underlying infection in suspected PID.
*Repeat ultrasound in 48 hours following antibiotic therapy*
- Repeating an ultrasound would be appropriate to **monitor the response** to antibiotic therapy for a tubo-ovarian abscess, but it is not a diagnostic investigation to identify the *cause* of the infection.
- Delaying **microbiological sampling** for 48 hours would be inappropriate, as identifying the pathogen is key to initiating effective, targeted treatment.
Question 138: A 52-year-old man presents to the emergency department with a 4-hour history of severe pain in his left groin. He has a past history of a left inguinal hernia that has been intermittently symptomatic for 2 years. On examination, there is a tender, tense, irreducible swelling in the left groin below and lateral to the pubic tubercle. His temperature is 37.9°C, pulse 110 bpm, and BP 132/84 mmHg. What is the most appropriate immediate management?
A. Arrange urgent ultrasound of the groin to confirm the diagnosis before proceeding
B. Emergency surgical exploration and repair with assessment of bowel viability (Correct Answer)
C. Attempt manual reduction under procedural sedation and analgesia in the emergency department
D. Administer IV antibiotics and arrange semi-urgent surgical repair within 24 hours
E. CT scan of abdomen and pelvis with IV contrast to assess for bowel ischaemia
Explanation: ***Emergency surgical exploration and repair with assessment of bowel viability***- The patient presents with classic signs of a **strangulated hernia**, including **severe, acute pain**, a **tender, tense, irreducible swelling**, and systemic signs like **tachycardia** and **low-grade fever**.- This constitutes a **surgical emergency** requiring immediate operative intervention to prevent **bowel ischemia, necrosis**, and potential **sepsis** or **peritonitis**, with prompt assessment of bowel viability.*Arrange urgent ultrasound of the groin to confirm the diagnosis before proceeding*- A **strangulated hernia** is a **clinical diagnosis**, and delaying definitive surgical management for imaging studies risks **bowel infarction** and increases morbidity.- Imaging, like ultrasound, is more appropriate when the diagnosis is unclear or non-emergent, not in a clear case of suspected strangulation.*Attempt manual reduction under procedural sedation and analgesia in the emergency department*- Manual reduction is **contraindicated** in suspected **strangulation** due to the high risk of **reducing gangrenous bowel** back into the abdominal cavity, leading to **concealed peritonitis** or **sepsis**.- The hernia is described as "irreducible" and "tense," which further argues against manual reduction in this context.*Administer IV antibiotics and arrange semi-urgent surgical repair within 24 hours*- Delaying surgery for up to **24 hours** in a strangulated hernia is unacceptable, as **bowel ischemia** can progress to **necrosis** within a few hours, leading to irreversible damage.- While **IV antibiotics** are an important adjunct, they do not resolve the mechanical obstruction or the underlying **ischemia** and should not delay immediate surgical intervention.*CT scan of abdomen and pelvis with IV contrast to assess for bowel ischaemia*- Similar to ultrasound, a **CT scan** would introduce an **unacceptable delay** in a patient with clinical signs of **strangulated bowel**, where time is critical to preserving **bowel viability**.- The clinical picture strongly suggests the need for **immediate surgical exploration**, making further diagnostic imaging unnecessary and potentially harmful.
Question 139: A 68-year-old man undergoes elective colonoscopy for surveillance following previous adenoma removal. A 12 mm sessile polyp is identified in the transverse colon and removed by endoscopic mucosal resection. Histology shows a tubular adenoma with high-grade dysplasia and focal invasion into the submucosa (pT1), measuring 2 mm from the resection margin. There is no lymphovascular invasion. What is the most appropriate management?
A. Repeat colonoscopy in 3 months to assess the resection site with biopsy
B. Proceed directly to segmental colonic resection with lymphadenectomy
C. Surveillance colonoscopy in 12 months as the lesion has been completely excised
D. Completion colonoscopy at 3 months and if clear, then surveillance at 1 year
E. Refer for consideration of completion colonic resection given the high-risk features (Correct Answer)
Explanation: ***Refer for consideration of completion colonic resection given the high-risk features*** - This lesion is a **pT1 colorectal cancer** (malignant polyp) presenting with **high-grade dysplasia**, which increases the risk of lymph node metastasis despite endoscopic removal.- Management of malignant polyps requires balancing the risk of residual disease; **high-risk features** like aggressive histology or narrow margins often necessitate surgical **lymphadenectomy**.*Repeat colonoscopy in 3 months to assess the resection site with biopsy*- While site checks are common after EMR, they only assess **local recurrence** and fail to address potential **lymph node metastasis** indicated by high-grade histology.- This approach is more appropriate for benign lesions or low-risk pT1 disease where surgical resection is not indicated.*Proceed directly to segmental colonic resection with lymphadenectomy*- While surgery is likely needed, the most appropriate next step in clinical practice is **multidisciplinary team (MDT)** referral to weigh surgical risks against the specific **pathological risk factors**.- Jumping to surgery without multidisciplinary consideration overlooks the patient's overall fitness and specific histological nuances.*Surveillance colonoscopy in 12 months as the lesion has been completely excised*- Standard surveillance is inappropriate for **pT1 lesions** with high-risk features, as the risk of **nodal involvement** is estimated between 10-20% in such cases.- Waiting 12 months allows potential residual or metastatic disease to progress, violating oncological principles for **malignant polyps**.*Completion colonoscopy at 3 months and if clear, then surveillance at 1 year*- This strategy focuses on **mucosal clearance** but ignores the risk of **submucosal invasion** (pT1) and possible occult nodal disease.- A "clear" biopsy at 3 months does not exclude the presence of malignant cells in the **regional lymph nodes** associated with high-grade pT1 tumors.
Question 140: A 42-year-old nulliparous woman presents with a 36-hour history of right iliac fossa pain, nausea, and fever. On examination, she has temperature 38.2°C, tenderness in the right iliac fossa with rebound tenderness, and positive Rovsing's sign. Blood tests show WCC 15.8 × 10⁹/L and CRP 87 mg/L. A CT scan shows an inflamed appendix with surrounding fat stranding but no perforation or abscess. Which scoring system would be most appropriate to assess the likelihood of appendicitis in this patient and guide management decisions?
A. Ranson criteria
B. Glasgow-Blatchford score
C. Wells score
D. Modified Duke criteria
E. Alvarado score (Correct Answer)
Explanation: ***Alvarado score***
- The **Alvarado score** (also known as MANTRELS score) is a clinical tool specifically designed to assess the likelihood of **acute appendicitis** based on symptoms, signs, and laboratory findings such as **leucocytosis**.
- The patient's presentation with right iliac fossa pain, nausea, fever, rebound tenderness, positive Rovsing's sign, and elevated WCC strongly aligns with the criteria used in the Alvarado score, making it the most appropriate for guiding management.
*Ranson criteria*
- The **Ranson criteria** are a scoring system used exclusively to estimate the severity and prognosis of **acute pancreatitis**.
- They evaluate parameters such as **LDH**, **glucose**, and **AST** at admission and 48 hours, which are irrelevant for diagnosing or managing appendicitis.
*Glasgow-Blatchford score*
- The **Glasgow-Blatchford score** is used to assess the risk of rebleeding and the need for intervention in patients with **upper gastrointestinal bleeding**.
- It considers factors like **urea**, **hemoglobin**, and **systolic blood pressure**, which are not directly relevant to the diagnosis of appendicitis.
*Wells score*
- The **Wells score** is a widely used diagnostic tool to estimate the pre-test probability of **deep vein thrombosis (DVT)** or **pulmonary embolism (PE)**.
- Its components include risk factors such as active cancer, immobilization, and clinical signs of leg swelling, which are unrelated to acute abdominal pain or appendicitis.
*Modified Duke criteria*
- The **Modified Duke criteria** are the gold standard for diagnosing **infective endocarditis**.
- These criteria rely on findings from **blood cultures** and **echocardiography** (e.g., vegetation on valves), which are not applicable to the clinical context of appendicitis.
