General Surgery Principles Practice Questions

Q: What is the most common infection of the hand?

Acute paronychia. **Explanation:** **Acute Paronychia** is the most common infection of the hand. It is a localized infection of the nail fold (eponychium), typically occurring after minor trauma such as nail-biting, manicuring, or hangnails. The most common causative organism is *Staphylococcus aureus*. It presents with pain, swelling, and erythema around the nail base, which may progress to abscess formation. **Analysis of Options:** * **Felon (Option B):** This is the second most common hand infection. It is a subcutaneous abscess of the distal pulp space of the finger. While serious due to the risk of compartment syndrome and osteomyelitis, its incidence is lower than paronychia. * **Web Space Infection (Option C):** Also known as a "collar-stud abscess," this involves the subcutaneous space between the fingers. It is less common and usually results from infected skin cracks or blisters. * **Palmar Abscess (Option D):** These are deep space infections (e.g., mid-palmar or thenar space). They are clinically significant but much rarer than superficial infections like paronychia. **High-Yield Clinical Pearls for NEET-PG:** * **Treatment:** Early paronychia is managed with warm soaks and antibiotics. If fluctuant, surgical drainage (eponychial fold elevation) is required. * **Chronic Paronychia:** Often fungal (*Candida albicans*) and seen in individuals with frequent water exposure (e.g., dishwashers). * **Kanavel’s Signs:** A classic triad/quadrad used to diagnose **Flexor Tenosynovitis** (another high-yield hand infection), not paronychia. * **Herpetic Whitlow:** Caused by HSV; it must be distinguished from a felon as incision and drainage are contraindicated in viral infections.

Q: Splenectomy is useful in:

Hereditary Spherocytosis. **Explanation:** **Hereditary Spherocytosis (HS)** is the correct answer because it is the most common indication for elective splenectomy in children. In HS, a defect in red blood cell (RBC) membrane proteins (like spectrin or ankyrin) leads to the formation of spherical, rigid cells. These spherocytes are trapped and destroyed by the splenic macrophages in the cords of Billroth. Splenectomy does not cure the membrane defect, but it significantly increases RBC lifespan, eliminates chronic hemolysis, and prevents the formation of pigment gallstones. **Why other options are incorrect:** * **Hemophilia:** This is a clotting factor deficiency (Factor VIII or IX). Splenectomy has no role in management as it does not affect factor levels. * **Polycythemia:** This involves an overproduction of RBCs. Management focuses on phlebotomy or myelosuppressive agents. Splenectomy is generally avoided as it may worsen the thrombotic risk already present in these patients. * **Thalassemia:** While splenectomy is sometimes performed in Thalassemia Major to reduce transfusion requirements (if hypersplenism develops), it is not the primary treatment and is less "curative" for the symptoms compared to its role in HS. **NEET-PG High-Yield Pearls:** * **Timing:** In HS, splenectomy is ideally delayed until after age 5 to reduce the risk of **OPSI** (Overwhelming Post-Splenectomy Infection). * **Prophylaxis:** Patients must receive vaccinations against *S. pneumoniae, H. influenzae,* and *N. meningitidis* at least 2 weeks before elective surgery. * **Post-op Blood Picture:** Look for **Howell-Jolly bodies**, Pappenheimer bodies, and Heinz bodies on a peripheral smear post-splenectomy. * **Associated Procedure:** Always screen for gallstones (cholelithiasis) in HS patients; if present, a concomitant cholecystectomy is performed.

Q: Marjolin's ulcer is:

Squamous cell carcinoma. **Explanation:** **Marjolin’s ulcer** refers to a malignancy arising in chronic non-healing wounds, scars, or inflammatory tracts. The underlying medical concept is that chronic irritation and repeated cycles of tissue repair in areas of poor vascularity (like a burn scar) lead to malignant transformation. 1. **Why Option C is Correct:** The vast majority (approx. 95%) of Marjolin’s ulcers are histologically **Squamous Cell Carcinomas (SCC)**. These arise from the epithelial cells at the edges of chronic ulcers or scars. While they are generally slow-growing initially, once they penetrate the dense scar tissue, they become highly aggressive with a higher rate of metastasis compared to typical SCC. 2. **Why Other Options are Incorrect:** * **Option A:** While Marjolin’s ulcer is aggressive, the term "rapidly growing" is misleading. It typically has a long latent period (average 25–30 years) before malignancy develops. * **Option B:** Basal Cell Carcinoma (BCC) is the second most common type but is significantly rarer than SCC in this context. * **Option D:** Adenocarcinoma arises from glandular tissue; Marjolin’s ulcer arises from the squamous epithelium of the skin. **Clinical Pearls for NEET-PG:** * **Most common site:** Lower limbs (specifically over joints). * **Most common predisposing factor:** Post-burn scars (cicatrix). * **Characteristic feature:** It is typically **painless** because the scar tissue lacks sensory nerve fibers. * **Lymphadenopathy:** Often absent initially because the dense scar tissue acts as a barrier to lymphatic spread; however, if present, it signifies a poor prognosis. * **Diagnosis:** Edge biopsy is mandatory for any chronic ulcer showing new growth, everted edges, or bleeding.

Q: What is the use of this instrument?

Create pneumoperitoneum by open method. ***Create pneumoperitoneum by open method*** - This instrument is a **Hasson trocar**, specifically designed for the **open (Hasson) technique** of creating pneumoperitoneum in laparoscopic surgery. - Features include a **blunt obturator**, **conical sleeve**, and **suture retention wings** that distinguish it from other laparoscopic instruments. *Drain hydatid cyst* - Hydatid cyst drainage requires specialized **aspiration needles** or **catheter systems**, not a trocar with suture wings. - The **blunt tip** and **wide bore** of this instrument make it unsuitable for precise cyst aspiration procedures. *Suction cannula* - Suction cannulas are typically **straight, narrow tubes** without the conical sleeve and suture retention features seen here. - This instrument lacks the **continuous suction port** and **flexible connection** characteristic of suction devices. *None of the above* - The instrument clearly shows the **distinctive features** of a Hasson trocar used in laparoscopic surgery. - The **suture retention wings** and **blunt obturator design** are pathognomonic for pneumoperitoneum creation by open method.

Q: Petersen hernia is defined as:

An internal hernia located behind the Roux-en-Y limb. **Explanation:** **Petersen’s Hernia** is a type of internal hernia that occurs through **Petersen’s space**. This space is a potential defect created between the mesentery of the Roux-en-Y limb (alimentary limb) and the transverse mesocolon. It is a well-known complication following gastric bypass surgery (RYGB) or any Roux-en-Y reconstruction. * **Why Option A is Correct:** In a Roux-en-Y configuration, the lifted jejunal limb creates a gap behind it. If this space is not surgically closed, loops of the small bowel can herniate through it, leading to bowel obstruction, ischemia, or necrosis. * **Why Option B is Incorrect:** A hernia through the transverse mesocolon is specifically called a **Transmesocolic hernia**. This occurs if the defect created to pass the Roux limb (in retrocolic repairs) is not closed. * **Why Option C is Incorrect:** Cervical hernias are not a standard classification in general surgery; hernias in the neck region are usually related to discs (orthopedics) or lung apices (Sibson’s fascia). * **Why Option D is Incorrect:** A hernia through the epiploic foramen is known as a **Winslow’s foramen hernia**. **Clinical Pearls for NEET-PG:** 1. **Incidence:** Petersen’s hernia is more common in **Laparoscopic** Roux-en-Y Gastric Bypass compared to open surgery because laparoscopy results in fewer adhesions, allowing the bowel to move more freely into potential spaces. 2. **Presentation:** Patients often present with intermittent, "colicky" post-prandial abdominal pain before progressing to acute intestinal obstruction. 3. **Imaging:** On CT scan, look for the **"Swirl sign"** (torsion of the mesenteric vessels). 4. **Prevention:** The standard of care is the meticulous closure of both Petersen’s space and the mesenteric defect during the primary surgery.

Q: What is the recommended treatment for a strangulated hernia?

Immediate surgery. **Explanation:** A **strangulated hernia** is a surgical emergency where the blood supply to the herniated contents (usually bowel or omentum) is compromised, leading to ischemia, gangrene, and potential perforation. **Why "Immediate Surgery" is Correct:** The primary goal in strangulation is to restore blood flow or resect non-viable tissue. Once strangulation is suspected—characterized by a tense, tender, irreducible swelling with overlying skin changes and signs of intestinal obstruction—**immediate surgical exploration** is mandatory. Delaying surgery increases the risk of bowel necrosis, peritonitis, and sepsis, significantly raising morbidity and mortality rates. **Why Other Options are Incorrect:** * **Observation:** This is contraindicated as strangulation is a life-threatening condition that will not resolve spontaneously. * **Manual Reduction (Taxis):** This is **strictly contraindicated** in strangulated hernias. Forcing a potentially gangrenous bowel loop back into the peritoneal cavity can lead to "reduction en masse" or cause generalized peritonitis (reduction of necrotic bowel). * **Analgesics:** While pain management is part of supportive care, it does not treat the underlying vascular compromise and may mask worsening clinical signs. **High-Yield Clinical Pearls for NEET-PG:** * **Clinical Triad:** Irreducibility + Tenderness + Lack of cough impulse. * **Richter’s Hernia:** Only a part of the bowel wall is trapped; it can strangulate without causing complete intestinal obstruction. * **Maydl’s Hernia:** A "W-shaped" loop where the strangulated portion is located inside the abdomen, not in the hernia sac. * **Management Tip:** If a strangulated hernia reduces spontaneously during induction of anesthesia, the surgeon must still perform a laparotomy/laparoscopy to inspect the viability of the reduced bowel segment.

Question 1

What is the most common infection of the hand?

Accepted Answer

Acute paronychia

Answer

Felon

Answer

Web space infection

Answer

Palmar abscess

Question 2

Splenectomy is useful in:

Accepted Answer

Hereditary Spherocytosis

Answer

Hemophilia

Answer

Polycythemia

Answer

Thalassemia

Question 3

Marjolin's ulcer is:

Accepted Answer

Squamous cell carcinoma

Answer

Rapidly growing neoplasm

Answer

Basal cell carcinoma

Answer

Adenocarcinoma

Question 4

What is the use of this instrument?

Accepted Answer

Create pneumoperitoneum by open method

Answer

Drain hydatid cyst

Answer

Suction cannula

Answer

None of the above

Question 5

Primary peritonitis is more common in females because?

Accepted Answer

The ostia of the Fallopian tubes communicate with the abdominal cavity.

Answer

The peritoneum overlies the uterus.

Answer

There is a rupture of functional ovarian cysts.

Answer

None of the above.

Question 6

Petersen hernia is defined as:

Accepted Answer

An internal hernia located behind the Roux-en-Y limb

Answer

An internal hernia through the transverse mesocolon

Answer

A cervical hernia

Answer

A hernia through the epiploic foramen

Question 7

Which of the following statements regarding direct inguinal hernia is true?

Accepted Answer

Located medial to the inferior epigastric artery

Answer

More common in women

Answer

Often protrudes into the scrotum

Answer

The sac is opened during reduction in surgery

Question 8

Which of the following is an evidence that splenectomy might benefit a patient with idiopathic thrombocytopenic purpura?

Accepted Answer

An increase in platelet count on corticosteroid therapy

Answer

A significantly enlarged spleen

Answer

A high reticulocyte count

Answer

Patient's age less than five years

Question 9

Which of the following is NOT true about the components separation technique?

Accepted Answer

None of the above statements are true.

Answer

It is associated with a high wound infection risk.

Answer

Ramirez first described the technique.

Answer

It has a recurrence rate of around 20%.

Question 10

What is the recommended treatment for a strangulated hernia?

Accepted Answer

Immediate surgery

Answer

Observation

Answer

Manual reduction

Answer

Analgesics

General Surgery Principles — MCQs

General Surgery Principles — MCQs

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