Acute Surgical Presentations — MCQs
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A 35-year-old man undergoes emergency laparotomy for suspected perforated appendicitis. During surgery, the appendix appears normal, but there is inflammation of a 5 cm segment of terminal ileum with associated mesenteric lymphadenopathy. A small diverticulum is noted on the antimesenteric border of the ileum 50 cm from the ileocaecal valve. What is the most appropriate surgical management?
A 58-year-old man with metastatic pancreatic cancer on palliative chemotherapy presents with a 4-day history of worsening abdominal pain, distension, and vomiting. He has not opened his bowels for 5 days. CT abdomen shows dilated small bowel loops with multiple transition points and ascites. There is no evidence of a single obstructing mass. What is the most likely mechanism of obstruction in this patient?
A 47-year-old woman presents with sudden onset severe epigastric pain radiating to the back following an ERCP procedure performed 8 hours earlier for choledocholithiasis. On examination, she has a rigid abdomen with guarding and rebound tenderness. CT abdomen shows retroperitoneal air tracking along the duodenum. What is the most likely site of perforation?
A 69-year-old man presents with a 3-day history of colicky abdominal pain and absolute constipation. He has previously undergone right hemicolectomy for colon cancer 8 years ago. Examination reveals a distended abdomen with a tympanic percussion note and high-pitched bowel sounds. Plain abdominal radiograph shows dilated small bowel loops centrally located with valvulae conniventes visible. What is the most likely anatomical location of the obstruction?
A 39-year-old man with Crohn's disease presents with a 6-hour history of severe, constant right lower quadrant pain. He has had increasing diarrhoea over the past week. CT abdomen shows terminal ileal wall thickening (8 mm), surrounding fat stranding, and a small amount of free fluid in the right paracolic gutter. There is no abscess or free air. His temperature is 38.4°C, heart rate 108 bpm, blood pressure 118/72 mmHg. WCC 14.5 × 10⁹/L, CRP 156 mg/L. What is the most appropriate initial management?
What is the Coffee Bean sign on abdominal imaging and what condition does it indicate?
A 43-year-old woman with ulcerative colitis presents with a 48-hour history of increasing abdominal pain and distension. She has been passing bloody diarrhoea 12 times daily. Examination reveals a distended, tympanic abdomen with reduced bowel sounds. Abdominal X-ray shows colonic dilatation with the transverse colon measuring 8 cm in diameter. Blood results: Hb 95 g/L, WCC 18.2 × 10⁹/L, CRP 245 mg/L, albumin 28 g/L. What is the most critical complication that must be urgently excluded?
A 62-year-old man presents with a 5-day history of cramping central abdominal pain and bilious vomiting. He has had no previous abdominal surgery. CT scan shows a 2.5 cm gallstone in the terminal ileum with proximal small bowel dilatation and pneumobilia. What is the pathophysiological mechanism underlying this condition?
A 56-year-old woman undergoes an urgent laparotomy for perforated sigmoid diverticulitis. During surgery, the surgeon finds faecal peritonitis and performs a Hartmann's procedure. What is the primary reason for choosing this procedure over primary anastomosis in this clinical scenario?
A 74-year-old man with type 2 diabetes and chronic kidney disease stage 4 presents with a 24-hour history of left lower quadrant pain and fever. CT abdomen shows sigmoid diverticulitis with a 5 cm loculated abscess. His observations show temperature 38.2°C, heart rate 102 bpm, blood pressure 128/78 mmHg. Blood results show WCC 16.8 × 10⁹/L, CRP 185 mg/L, creatinine 248 μmol/L (baseline 210 μmol/L). What is the most appropriate management?
Acute Surgical Presentations UK Medical PG Practice Questions and MCQs
Question 151: A 35-year-old man undergoes emergency laparotomy for suspected perforated appendicitis. During surgery, the appendix appears normal, but there is inflammation of a 5 cm segment of terminal ileum with associated mesenteric lymphadenopathy. A small diverticulum is noted on the antimesenteric border of the ileum 50 cm from the ileocaecal valve. What is the most appropriate surgical management?
- A. Resection of the inflamed ileal segment with primary anastomosis and removal of the diverticulum (Correct Answer)
- B. Appendicectomy only and conservative management of the ileal inflammation
- C. Diverticulectomy only with antibiotic treatment for the ileitis
- D. Right hemicolectomy to remove all affected bowel
- E. Biopsy of the ileal segment and mesenteric lymph nodes for histological diagnosis
Explanation: ***Resection of the inflamed ileal segment with primary anastomosis and removal of the diverticulum***- The patient presents with symptoms mimicking appendicitis, but intraoperative findings reveal **Meckel's diverticulitis** with associated **ileitis** and mesenteric lymphadenopathy.- Surgical **resection of the affected ileal segment** along with the diverticulum is the most appropriate management, especially when there is significant inflammation or involvement of the adjacent bowel, to prevent future complications like perforation or recurrence.*Appendicectomy only and conservative management of the ileal inflammation*- Performing only an **appendicectomy** fails to address the primary cause of the acute abdomen, which is the inflamed **Meckel's diverticulum**.- Leaving an inflamed diverticulum risks serious complications such as **perforation**, abscess formation, or future **small bowel obstruction**.*Diverticulectomy only with antibiotic treatment for the ileitis*- Simple **diverticulectomy** might be insufficient if the base of the diverticulum is wide or if the surrounding **ileum** is severely compromised by inflammation.- Resection of the ileal segment ensures that any **ectopic mucosa** (gastric or pancreatic), often found in Meckel's diverticula, is completely removed, which could be the source of inflammation.*Right hemicolectomy to remove all affected bowel*- A **right hemicolectomy** is an overly aggressive and unnecessary procedure for localized **Meckel's diverticulitis** and associated ileitis.- This procedure carries higher **morbidity** and is typically reserved for extensive disease like malignancy or complex **Crohn's disease** involving the ileocaecal valve.*Biopsy of the ileal segment and mesenteric lymph nodes for histological diagnosis*- **Biopsy** alone is an observational approach that does not resolve the **acute surgical pathology** in an emergency setting.- Definitive treatment for **Meckel's diverticulitis** with associated inflammation requires surgical excision to prevent imminent perforation and address the cause of symptoms.
Question 152: A 58-year-old man with metastatic pancreatic cancer on palliative chemotherapy presents with a 4-day history of worsening abdominal pain, distension, and vomiting. He has not opened his bowels for 5 days. CT abdomen shows dilated small bowel loops with multiple transition points and ascites. There is no evidence of a single obstructing mass. What is the most likely mechanism of obstruction in this patient?
- A. Peritoneal carcinomatosis causing multiple sites of obstruction (Correct Answer)
- B. Single obstructing metastasis at the ileocaecal valve
- C. Paralytic ileus from chemotherapy effect
- D. Superior mesenteric artery syndrome from cachexia
- E. Adhesions from previous surgical resection
Explanation: ***Peritoneal carcinomatosis causing multiple sites of obstruction*** - In patients with advanced **metastatic pancreatic cancer**, malignant bowel obstruction often occurs due to widespread **peritoneal seeding** and deposits, leading to multifocal sites of external compression or direct infiltration of the bowel wall. - The CT findings of **multiple transition points** in dilated small bowel loops, along with the presence of **ascites**, are highly characteristic of **peritoneal carcinomatosis** causing a disseminated mechanical obstruction. *Single obstructing metastasis at the ileocaecal valve* - This mechanism would typically present with a **single, focal mass** at the ileocaecal valve, leading to a solitary **transition point** on imaging distal to the obstruction. - The CT description of
Question 153: A 47-year-old woman presents with sudden onset severe epigastric pain radiating to the back following an ERCP procedure performed 8 hours earlier for choledocholithiasis. On examination, she has a rigid abdomen with guarding and rebound tenderness. CT abdomen shows retroperitoneal air tracking along the duodenum. What is the most likely site of perforation?
- A. Second part of duodenum near the ampulla of Vater (Correct Answer)
- B. Oesophagogastric junction
- C. First part of duodenum
- D. Gastric antrum
- E. Jejunum at the ligament of Treitz
Explanation: ***Second part of duodenum near the ampulla of Vater*** - This is the most common site of **ERCP-related perforation**, occurring during **sphincterotomy** or difficult **cannulation** of the papilla. - Perforation here typically results in **retroperitoneal air** tracking along the duodenum, as seen on CT, because the second part of the duodenum is **primarily retroperitoneal**. *Oesophagogastric junction* - Injury at this site (such as **Mallory-Weiss tears** or **Boerhaave syndrome**) is usually related to forceful vomiting or initial scope insertion, not localized ampullary intervention. - Unlike duodenal injuries, a complete perforation here would more likely present with **pneumomediastinum** or free air in the peritoneal cavity. *First part of duodenum* - This section is mostly **intraperitoneal**, so a perforation here would typically present with **pneumoperitoneum** (free air under the diaphragm) rather than localized retroperitoneal air. - It is a common site for **peptic ulcer disease** perforations but is not the primary site of manipulation during an ERCP procedure. *Gastric antrum* - Perforations in the gastric antrum are rare during ERCP and usually result from direct **mechanical trauma** from the endoscope shaft rather than therapeutic maneuvers. - A gastric perforation would lead to **intraperitoneal air** and generalized peritonitis manifestations, unlike the retroperitoneal tracking described. *Jejunum at the ligament of Treitz* - The **ligament of Treitz** marks the beginning of the jejunum and is usually beyond the standard reach of a **side-viewing duodenoscope** used for ERCP. - Injury here would result in significant **peritonitis** and is not associated with the specific retroperitoneal air pattern seen following biliary interventions.
Question 154: A 69-year-old man presents with a 3-day history of colicky abdominal pain and absolute constipation. He has previously undergone right hemicolectomy for colon cancer 8 years ago. Examination reveals a distended abdomen with a tympanic percussion note and high-pitched bowel sounds. Plain abdominal radiograph shows dilated small bowel loops centrally located with valvulae conniventes visible. What is the most likely anatomical location of the obstruction?
- A. Adhesions at the previous surgical anastomosis site (Correct Answer)
- B. Incisional hernia at the laparotomy scar
- C. Recurrent tumour at the hepatic flexure
- D. Adhesions in the pelvis causing closed loop obstruction
- E. Internal hernia through a mesenteric defect
Explanation: ***Adhesions at the previous surgical anastomosis site*** - **Adhesions** are the most common cause of **small bowel obstruction (SBO)** in patients with a history of prior abdominal surgery, accounting for 60-75% of cases. - The patient's history of a **right hemicolectomy** 8 years ago makes the **ileocolic anastomosis site** a highly probable location for **fibrous band** formation, leading to the presented acute obstruction. *Incisional hernia at the laparotomy scar* - While an **incisional hernia** can cause obstruction, it would typically present as a **palpable mass** at the laparotomy scar during physical examination, which is not described. - The radiological findings of **centrally located dilated small bowel loops** with **valvulae conniventes** are consistent with small bowel obstruction, but without a palpable hernia, adhesions are a more likely etiology in this context. *Recurrent tumour at the hepatic flexure* - The patient underwent a **right hemicolectomy**, which involves the removal of the **hepatic flexure**, making local recurrence at this specific site anatomically unlikely. - Although cancer recurrence can cause obstruction, **adhesive small bowel obstruction** is statistically far more common 8 years after colon cancer surgery, especially with acute onset symptoms. *Adhesions in the pelvis causing closed loop obstruction* - **Closed-loop obstruction** involves bowel trapped at two points, carrying a high risk of strangulation. While adhesions can cause it, the radiological signs like the "whirl sign" or a distinct U-shaped loop are usually more specific. - Adhesions causing obstruction in the **pelvis** are more commonly associated with surgeries like appendectomy or gynecological procedures rather than a right hemicolectomy. *Internal hernia through a mesenteric defect* - An **internal hernia** occurs when bowel passes through a defect in the mesentery, often created during complex reconstructive surgeries like Roux-en-Y gastric bypass. - While possible after any abdominal surgery, it is a much rarer cause of **small bowel obstruction** compared to **post-operative adhesions** following a standard hemicolectomy.
Question 155: A 39-year-old man with Crohn's disease presents with a 6-hour history of severe, constant right lower quadrant pain. He has had increasing diarrhoea over the past week. CT abdomen shows terminal ileal wall thickening (8 mm), surrounding fat stranding, and a small amount of free fluid in the right paracolic gutter. There is no abscess or free air. His temperature is 38.4°C, heart rate 108 bpm, blood pressure 118/72 mmHg. WCC 14.5 × 10⁹/L, CRP 156 mg/L. What is the most appropriate initial management?
- A. IV corticosteroids and antibiotics with surgical consultation (Correct Answer)
- B. Emergency laparotomy for suspected perforation
- C. IV biologics (infliximab) loading dose
- D. IV antibiotics alone with conservative management
- E. Urgent colonoscopy to assess disease extent
Explanation: ***IV corticosteroids and antibiotics with surgical consultation*** - The patient's presentation with severe right lower quadrant pain, increasing diarrhoea, systemic inflammatory response (fever, tachycardia, elevated WCC, CRP), and CT findings of **terminal ileal wall thickening, fat stranding, and free fluid** strongly indicate a severe, complicated Crohn's flare. - **IV corticosteroids** are crucial for controlling acute inflammation, while **broad-spectrum antibiotics** are essential due to systemic signs of infection and the risk of bacterial translocation or contained perforation; a **surgical consultation** provides important standby for monitoring and potential intervention. *Emergency laparotomy for suspected perforation* - The CT scan explicitly states **no free air**, which rules out a frank, free perforation requiring immediate emergency laparotomy. - While free fluid and fat stranding suggest severe inflammation, initial management for a complicated Crohn's flare without clear free perforation is typically medical stabilization with close surgical monitoring. *IV biologics (infliximab) loading dose* - Administering **biologics** like infliximab in the presence of suspected active infection or potential perforation (indicated by systemic inflammatory response and free fluid) is contraindicated due to the risk of exacerbating sepsis. - Biologics are typically reserved for patients who are stabilized, or when infection/abscess has been definitively ruled out, and for cases refractory to conventional therapy. *IV antibiotics alone with conservative management* - This approach fails to address the underlying severe **transmural inflammation** of Crohn's disease, which is the primary driver of the patient's symptoms and requires potent anti-inflammatory treatment like corticosteroids. - Conservative management alone is insufficient given the patient's severe symptoms, systemic inflammatory response, and CT findings. *Urgent colonoscopy to assess disease extent* - Performing a **colonoscopy** during an acute, severe inflammatory flare with significant bowel wall thickening and free fluid carries a high risk of **bowel perforation**. - The CT scan has already provided sufficient diagnostic information regarding the disease extent in the terminal ileum, making an urgent endoscopic procedure both unnecessary and dangerous in this acute setting.
Question 156: What is the Coffee Bean sign on abdominal imaging and what condition does it indicate?
- A. Two air-filled loops of sigmoid colon meeting at a point, indicating sigmoid volvulus (Correct Answer)
- B. Dilated loop of small bowel with a whirl pattern, indicating midgut volvulus
- C. Air-fluid levels in parallel loops of bowel, indicating small bowel obstruction
- D. Thickened bowel wall with target appearance, indicating intussusception
- E. Distended caecum with loss of haustration, indicating caecal volvulus
Explanation: ***Two air-filled loops of sigmoid colon meeting at a point, indicating sigmoid volvulus*** - The **Coffee Bean sign** (or bent inner tube sign) is formed by the intensely dilated **sigmoid colon** doubling back on itself, with the mesenteric line forming the "cleft" of the bean. - It is a classic radiographic sign of **sigmoid volvulus**, where the colon twists on its mesentery, typically seen in older patients with a history of **chronic constipation**. *Dilated loop of small bowel with a whirl pattern, indicating midgut volvulus* - The **whirl sign** (swirling of mesenteric vessels) is a classic finding on **CT imaging**, rather than the coffee bean sign on plain X-ray. - This pattern is more characteristic of **midgut volvulus** or a closed-loop obstruction, often involving the small bowel. *Air-fluid levels in parallel loops of bowel, indicating small bowel obstruction* - Multiple **air-fluid levels** and a "string of pearls" sign on an upright abdominal radiograph are hallmark signs of **small bowel obstruction**. - These loops typically show **valvulae conniventes** crossing the entire width of the lumen, unlike the smooth-walled coffee bean appearance. *Thickened bowel wall with target appearance, indicating intussusception* - A **target sign** (or doughnut sign) is a classic **ultrasound** or CT finding where concentric rings of bowel represent the intussusceptum within the intussuscipiens. - It indicates **intussusception** and is most commonly seen in the pediatric population at the ileocecal junction. *Distended caecum with loss of haustration, indicating caecal volvulus* - **Caecal volvulus** typically presents with a **comma-shaped** or "fetal-shaped" gas shadow shifting toward the left upper quadrant. - Unlike sigmoid volvulus, caecal volvulus usually retains some visible **haustral markings** and does not form the symmetric coffee bean shape.
Question 157: A 43-year-old woman with ulcerative colitis presents with a 48-hour history of increasing abdominal pain and distension. She has been passing bloody diarrhoea 12 times daily. Examination reveals a distended, tympanic abdomen with reduced bowel sounds. Abdominal X-ray shows colonic dilatation with the transverse colon measuring 8 cm in diameter. Blood results: Hb 95 g/L, WCC 18.2 × 10⁹/L, CRP 245 mg/L, albumin 28 g/L. What is the most critical complication that must be urgently excluded?
- A. Toxic megacolon with impending perforation (Correct Answer)
- B. Acute severe ulcerative colitis with systemic toxicity
- C. Colorectal carcinoma with obstruction
- D. Clostridium difficile superinfection
- E. Portal vein thrombosis secondary to inflammation
Explanation: ***Toxic megacolon with impending perforation*** - The patient presents with classic features of **toxic megacolon**, defined by colonic dilatation greater than **6 cm** (here 8 cm) in the presence of severe systemic inflammation and colitis. - This is a life-threatening emergency; the high **WCC (18.2 × 10⁹/L)** and **CRP (245 mg/L)** indicate significant toxicity and a high risk of **spontaneous perforation** or peritonitis. *Acute severe ulcerative colitis with systemic toxicity* - While the patient meets the **Truelove and Witts criteria** for acute severe UC, this diagnosis does not fully capture the critical surgical emergency of the **dilated colon**. - Systemic toxicity is a component of toxic megacolon, but once the colon exceeds **6 cm**, the management priority shifts toward monitoring for **colonic rupture**. *Colorectal carcinoma with obstruction* - Although long-standing ulcerative colitis increases the risk of **colorectal carcinoma**, the acute presentation of bloody diarrhea and massive dilatation in this context is more suggestive of **inflammatory dilatation**. - Mechanical obstruction would typically show a **transitional point** and does not usually present with this level of systemic inflammatory markers unless complicated. *Clostridium difficile superinfection* - **C. difficile** is a known trigger for flares and toxic megacolon in IBD patients and should be tested for, but it is not the **complication** itself. - The immediate clinical threat is the **anatomical dilatation** and potential for perforation rather than the underlying pathological trigger. *Portal vein thrombosis secondary to inflammation* - IBD is a **prothrombotic state**, but **portal vein thrombosis** typically presents with signs of portal hypertension or mesenteric ischemia rather than massive transverse colon dilatation. - While it is a recognized complication of chronic inflammation, it is not the most **critical or urgent** finding based on the provided X-ray results.
Question 158: A 62-year-old man presents with a 5-day history of cramping central abdominal pain and bilious vomiting. He has had no previous abdominal surgery. CT scan shows a 2.5 cm gallstone in the terminal ileum with proximal small bowel dilatation and pneumobilia. What is the pathophysiological mechanism underlying this condition?
- A. Cholecystoduodenal fistula with gallstone migration causing mechanical obstruction (Correct Answer)
- B. Acute cholangitis with secondary ileus from systemic sepsis
- C. Gallstone pancreatitis with paralytic ileus
- D. Mirizzi syndrome with extrinsic compression of the duodenum
- E. Gallbladder perforation with bile peritonitis and reactive ileus
Explanation: ***Cholecystoduodenal fistula with gallstone migration causing mechanical obstruction***- This patient presents with **gallstone ileus**, a condition where a large gallstone enters the bowel through a **cholecystoenteric fistula**, most commonly a **cholecystoduodenal** connection.- The classic findings, known as **Rigler's triad**, include **pneumobilia** (air in the biliary tree), **mechanical small bowel obstruction**, and an **ectopic gallstone**, usually impacting the narrow **terminal ileum**.*Acute cholangitis with secondary ileus from systemic sepsis*- **Cholangitis** typically presents with **Charcot's triad** (jaundice, fever, right upper quadrant pain), which differs from the obstructive abdominal pain seen here.- While sepsis can cause a **paralytic ileus**, it would not explain the presence of a **discrete 2.5 cm gallstone** causing mechanical obstruction in the distal bowel.*Gallstone pancreatitis with paralytic ileus*- **Gallstone pancreatitis** results from a stone obstructing the distal common bile duct, causing elevated lipase and **epigastric pain** radiating to the back.- **Paralytic ileus** due to pancreatitis would cause generalized bowel dilatation rather than a localized **high-grade mechanical obstruction** at the terminal ileum.*Mirizzi syndrome with extrinsic compression of the duodenum*- **Mirizzi syndrome** involves a stone in the cystic duct or gallbladder neck compressing the **common hepatic duct**, primarily causing **obstructive jaundice**.- It does not involve the migration of a stone into the ileum or the characteristic **pneumobilia** seen when a fistula connects the gallbladder to the gut.*Gallbladder perforation with bile peritonitis and reactive ileus*- Free **gallbladder perforation** leads to **generalized peritonitis**, characterized by guarding, rigidity, and systemic toxicity.- While a reactive ileus may occur, it does not explain the presence of an **intraluminal ectopic gallstone** or the specific radiographic signs of **Rigler's triad**.
Question 159: A 56-year-old woman undergoes an urgent laparotomy for perforated sigmoid diverticulitis. During surgery, the surgeon finds faecal peritonitis and performs a Hartmann's procedure. What is the primary reason for choosing this procedure over primary anastomosis in this clinical scenario?
- A. Reduced risk of anastomotic leak in the presence of faecal contamination (Correct Answer)
- B. Shorter operative time allowing faster recovery
- C. Better preservation of anal sphincter function
- D. Lower risk of postoperative adhesion formation
- E. Improved long-term colorectal cancer surveillance
Explanation: ***Reduced risk of anastomotic leak in the presence of faecal contamination*** - Performing a **primary anastomosis** in the setting of **faecal peritonitis** (Hinchey IV) carries an unacceptably high risk of leak and sepsis due to impaired tissue healing. - **Hartmann's procedure** eliminates the risk of a catastrophic leak by resecting the diseased segment and creating an **end colostomy** while closing the rectal stump. *Shorter operative time allowing faster recovery* - While a Hartmann's procedure is often faster than a primary anastomosis with a diverting loop ileostomy, **operative speed** is not the primary clinical goal in this setting. - The decision is driven by the **safety profile** and systemic stability of the patient rather than purely the duration of surgery. *Better preservation of anal sphincter function* - Both a Hartmann's procedure and a primary anastomosis preserve the **anal sphincter** complex; neither technique inherently damages it. - The challenge with a Hartmann's procedure is the later **reversal**, which may be technically difficult but does not target the sphincters. *Lower risk of postoperative adhesion formation* - Any major **laparotomy** and bowel resection carries a significant risk of **abdominal adhesions** regardless of the technique used for reconstruction. - Hartmann's procedure is not chosen to modify adhesion risk, which is a common consequence of **peritonitis** and surgery. *Improved long-term colorectal cancer surveillance* - The primary indication here is **diverticulitis**, an inflammatory condition, so standard cancer surveillance protocols are not the deciding factor for the surgical choice. - A **colostomy** does not provide a surveillance advantage over a primary anastomosis once the acute inflammation has resolved.
Question 160: A 74-year-old man with type 2 diabetes and chronic kidney disease stage 4 presents with a 24-hour history of left lower quadrant pain and fever. CT abdomen shows sigmoid diverticulitis with a 5 cm loculated abscess. His observations show temperature 38.2°C, heart rate 102 bpm, blood pressure 128/78 mmHg. Blood results show WCC 16.8 × 10⁹/L, CRP 185 mg/L, creatinine 248 μmol/L (baseline 210 μmol/L). What is the most appropriate management?
- A. IV antibiotics and percutaneous CT-guided drainage (Correct Answer)
- B. Emergency laparotomy with Hartmann's procedure
- C. IV antibiotics alone with close monitoring
- D. Laparoscopic drainage and peritoneal lavage
- E. Emergency sigmoid colectomy with primary anastomosis
Explanation: ***IV antibiotics and percutaneous CT-guided drainage*** - This patient has a **5 cm loculated abscess**, which corresponds to **Hinchey Stage II diverticulitis**, necessitating source control beyond antibiotics alone. - **Percutaneous CT-guided drainage** is the preferred method for managing large, localized diverticular abscesses in **hemodynamically stable** patients, offering effective source control with minimal invasiveness, especially beneficial for a patient with **chronic kidney disease**. *Emergency laparotomy with Hartmann's procedure* - This procedure is typically reserved for more severe cases such as **Hinchey Stage III (purulent peritonitis)** or **Stage IV (fecal peritonitis)**, or for patients with **septic shock** or failed non-operative management. - It is a highly invasive procedure associated with significant morbidity, and a less invasive option is appropriate for this stable patient with a localized abscess. *IV antibiotics alone with close monitoring* - While IV antibiotics are crucial, a **5 cm loculated abscess** is too large to reliably resolve with antibiotics alone and carries a high risk of treatment failure and progression to widespread infection. - Expectant management with antibiotics only is typically reserved for uncomplicated diverticulitis or **very small (<3 cm)** pericolic abscesses. *Laparoscopic drainage and peritoneal lavage* - Laparoscopic drainage and lavage is sometimes considered for diffuse purulent peritonitis (**Hinchey Stage III**), but for a well-defined, loculated abscess, **percutaneous drainage** is less invasive and equally effective. - Surgical drainage, even laparoscopically, carries higher risks and is less favorable than image-guided drainage for an accessible collection in a patient with comorbidities. *Emergency sigmoid colectomy with primary anastomosis* - Performing a **primary anastomosis** in an emergency setting with acute inflammation, sepsis, and potential contamination carries a high risk of **anastomotic leak**, particularly in a patient with **diabetes** and **CKD** affecting healing. - This option is generally avoided in the presence of significant local inflammation and infection, as it increases the risk of complications without being immediately necessary for source control in a stable patient.
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