Gastrointestinal Surgery Practice Questions

Q: Trosier's sign is defined as:

Left supraclavicular lymph node enlargement. **Explanation:** **Troisier’s Sign** refers to the clinical finding of a hard, enlarged **left supraclavicular lymph node** (known as **Virchow’s node**) in the presence of an underlying intra-abdominal malignancy. 1. **Why Option B is correct:** The left supraclavicular node is the site where the **thoracic duct** joins the left subclavian vein. Malignant cells from abdominal organs (most commonly the stomach) spread via the thoracic duct and lodge in these nodes. The presence of this palpable node (Troisier’s sign) typically indicates advanced, metastatic (Stage IV) disease, rendering the tumor unresectable. 2. **Why other options are incorrect:** * **Option A:** Right supraclavicular lymphadenopathy usually drains the mediastinum, lungs, or esophagus, rather than the distal abdominal viscera. * **Option C:** Carpopedal spasm is a sign of hypocalcemia (Trousseau’s sign of latent tetany), often confused with Troisier’s due to the similar name. * **Option D:** Migrating thrombophlebitis is known as **Trousseau’s sign of malignancy**, frequently associated with pancreatic cancer. **High-Yield Clinical Pearls for NEET-PG:** * **Most common primary:** Gastric adenocarcinoma (specifically the intestinal type). * **Other associated signs of Gastric Cancer:** * **Sister Mary Joseph’s nodule:** Periumbilical lymphadenopathy. * **Blumer’s shelf:** Deposit in the rectovesical/rectouterine pouch (felt on PR exam). * **Krukenberg tumor:** Metastasis to the ovaries (signet ring cells). * **Irish node:** Left axillary lymph node enlargement.

Q: Chronic gastric ulcers are much more common at which location?

Incisura angularis. **Explanation:** The most common site for a chronic gastric ulcer is the **lesser curvature**, specifically at or near the **incisura angularis** (the junction of the body and the antrum). This area is a physiological "watershed" zone where the acid-secreting parietal cell mucosa of the body meets the gastrin-secreting mucosa of the antrum. This transitional zone is highly susceptible to mucosal injury from factors like *H. pylori* colonization and bile reflux. **Analysis of Options:** * **Incisura angularis (Correct):** This corresponds to **Type I gastric ulcers** (Modified Johnson Classification), which are the most frequent type. They occur along the lesser curve and are typically associated with low to normal acid secretion. * **Prepyloric (A):** These are **Type III ulcers**. While common, they are less frequent than Type I. They behave similarly to duodenal ulcers and are associated with gastric acid hypersecretion. * **Fundus (B) & Cardia (D):** These are rare sites for chronic peptic ulcers. Ulcers near the gastroesophageal junction are classified as **Type IV** and pose a significant surgical challenge due to their proximity to the esophagus. **Clinical Pearls for NEET-PG:** * **Modified Johnson Classification:** * **Type I:** Lesser curve/Incisura (Most common; normal acid). * **Type II:** Two ulcers (Gastric + Duodenal; high acid). * **Type III:** Prepyloric (High acid). * **Type IV:** High on lesser curve near GE junction (Normal acid). * **Type V:** Anywhere in the stomach (Associated with NSAID use). * **Rule of Thumb:** Unlike duodenal ulcers, all gastric ulcers must be biopsied to rule out malignancy, as approximately 5% of "benign-looking" gastric ulcers are actually gastric adenocarcinomas.

Q: What is the most common presentation of Peutz-Jeghers syndrome?

Intussusception. **Explanation:** **Peutz-Jeghers Syndrome (PJS)** is an autosomal dominant condition characterized by the mutation of the **STK11 (LKB1)** gene on chromosome 19. It is defined by the presence of multiple hamartomatous polyps throughout the gastrointestinal tract and mucocutaneous hyperpigmentation. **Why Intussusception is the correct answer:** The hamartomatous polyps in PJS are typically large and pedunculated. These polyps act as a **lead point**, causing the bowel to telescope into itself. **Intussusception** is the most common clinical presentation and complication, occurring in nearly 50% of patients by age 20. It most frequently involves the small intestine and often presents as recurrent, self-limiting bouts of abdominal pain or acute intestinal obstruction. **Analysis of Incorrect Options:** * **Pancreatic cancer:** While PJS patients have a significantly increased lifetime risk of pancreatic cancer (up to 36%), it is a late-stage complication, not the most common initial presentation. * **Melanoma:** Patients have a slightly increased risk of various cancers, but melanoma is not a hallmark presentation. The characteristic "spots" are benign melanin deposits (lentigines), not malignant melanoma. * **Malabsorption:** Although polyps are numerous, they are hamartomatous and do not typically interfere with the mucosal surface area enough to cause clinical malabsorption. **High-Yield Clinical Pearls for NEET-PG:** * **Triad:** Mucocutaneous pigmentation (lips/buccal mucosa), hamartomatous polyps, and increased cancer risk. * **Histology:** The hallmark is a **"Christmas tree" appearance** (branching smooth muscle fibers within the lamina propria). * **Cancer Risks:** Highest risks are for Colorectal, Breast, and Pancreatic cancers. * **Sertoli Cell Tumors:** PJS is associated with Large Cell Calcifying Sertoli Cell Tumors (LCCSCT) of the testes, leading to precocious puberty.

Q: At surgery for a right inguinal hernia, a 72-year-old man is found to have a hernia sac that is not independent of the bowel wall. The cecum forms part of the wall of the sac. Such a hernia is properly referred to as which of the following?

Sliding. **Explanation:** The correct answer is **Sliding Hernia**. A sliding hernia (hernia en glissade) occurs when a retroperitoneal organ (most commonly the **cecum** on the right or the **sigmoid colon** on the left) drags its overlying peritoneum with it into the inguinal canal. Consequently, the organ itself forms part of the posterior or lateral wall of the hernia sac, rather than being entirely contained within it. This is a crucial surgical distinction because any attempt to ligate the sac at the internal ring (high ligation) without recognizing the "sliding" component can lead to accidental injury to the bowel or its blood supply. **Analysis of Incorrect Options:** * **Incarcerated:** This refers to a hernia where the contents are trapped and cannot be reduced into the abdominal cavity. While a sliding hernia can be incarcerated, the term specifically describes the *state* of the contents, not the *anatomical composition* of the sac wall. * **Irreducible:** This is a clinical term synonymous with incarceration. It indicates that the hernia contents cannot be manually pushed back. * **Richter’s Hernia:** This occurs when only a portion of the circumference of the bowel wall (usually the antimesenteric border) is trapped within the hernia sac. It is dangerous because strangulation can occur without causing complete intestinal obstruction. **NEET-PG High-Yield Pearls:** * **Most common organ involved:** Bladder (especially in direct hernias) or Sigmoid colon (left side) and Cecum (right side). * **Clinical Clue:** Suspect a sliding hernia in elderly males with large, long-standing globular inguinal hernias. * **Surgical Management:** High ligation of the sac is contraindicated. The sac is partially excised, and the "sliding" organ is replaced into the extraperitoneal space (Bevan’s technique).

Q: What is true about strangulation of the intestine?

Venous blood flow is usually affected first.. **Explanation:** In intestinal obstruction, **strangulation** occurs when the blood supply to the trapped segment of the bowel is compromised. The correct answer is **B** because of the anatomical and physiological differences between veins and arteries. 1. **Why Option B is correct:** Veins have thinner walls and lower intraluminal pressure compared to thick-walled, high-pressure arteries. When a loop of bowel is constricted (e.g., in a hernia or volvulus), the external pressure first exceeds the low venous pressure, leading to **venous congestion** and edema. As the pressure continues to rise due to ongoing arterial inflow and worsening edema, it eventually exceeds the arterial pressure, leading to ischemia. 2. **Why Option A is incorrect:** Arterial flow is more resilient due to higher pressure and muscular walls; it is only compromised *after* venous outflow is obstructed. 3. **Why Option C & D are incorrect:** By definition, strangulation implies a compromise in blood flow. If left untreated, this leads to irreversible tissue death, known as **gangrene**, followed by perforation and peritonitis. **Clinical Pearls for NEET-PG:** * **Earliest Sign:** The earliest sign of strangulation is often **tachycardia** and localized tenderness. * **Cardinal Features:** Continuous pain (rather than colicky), fever, leukocytosis, and metabolic acidosis suggest strangulation. * **Pathology:** The sequence is: Venous obstruction → Edema → Arterial compromise → Hemorrhagic infarction → Gangrene. * **Management:** Strangulation is a surgical emergency requiring immediate laparotomy and resection of the non-viable segment.

Q: Which surgical repair is appropriate for a patient with a femoral hernia?

McVay repair. **Explanation:** The correct answer is **D. McVay repair**. **Why McVay repair is correct:** A femoral hernia occurs when abdominal contents protrude through the femoral canal, which is located medial to the femoral vein and inferior to the inguinal ligament. The **McVay (Cooper’s ligament) repair** is the classic tissue-based procedure for femoral hernias. In this technique, the conjoined tendon is sutured to **Cooper’s ligament** (pectineal ligament) rather than the inguinal ligament. This effectively bridges the gap and obliterates the femoral canal, addressing the anatomical defect responsible for the hernia. **Why the other options are incorrect:** * **A. Bassini repair:** This is a classic inguinal hernia repair where the conjoined tendon is sutured to the **inguinal ligament**. It does not close the femoral canal and is therefore ineffective for femoral hernias. * **B. Hunter’s repair:** This is not a recognized standard surgical repair for hernias. (Note: John Hunter is famous for Hunter’s canal/adductor canal, but not a hernia repair). * **C. Shouldice repair:** This is a multi-layer imbrication of the posterior wall of the inguinal canal. While it is the "gold standard" for tissue-based **inguinal** hernia repair, it does not address the femoral space. **High-Yield Clinical Pearls for NEET-PG:** * **Anatomy:** The femoral canal is bounded medially by the **lacunar ligament** and laterally by the **femoral vein**. * **Epidemiology:** Femoral hernias are more common in **females** (due to a wider pelvis), but inguinal hernias remain the most common hernia overall in both sexes. * **Risk:** Femoral hernias have the **highest risk of strangulation** (approx. 40%) due to the rigid boundaries of the femoral ring. * **Modern Approach:** While McVay is the classic answer, modern practice often utilizes **Laparoscopic (TEP/TAPP)** mesh repairs or the **Plug and Patch** technique.

Question 1

Which of the following is NOT included in the Alvarado score for appendicitis?

Accepted Answer

Leukocytosis

Answer

Migratory right iliac fossa pain

Answer

Nausea

Answer

Elevated temperature

Question 2

Trosier's sign is defined as:

Accepted Answer

Left supraclavicular lymph node enlargement

Answer

Right supraclavicular lymph node enlargement

Answer

Carpopedal spasm

Answer

Migrating thrombophlebitis

Question 3

Chronic gastric ulcers are much more common at which location?

Accepted Answer

Incisura angularis

Answer

Prepyloric

Answer

Fundus

Answer

Cardia

Question 4

Intussusception is frequently associated with which of the following?

Accepted Answer

Submucosal lipoma

Answer

Subserosal lipoma

Answer

Intramural lipoma

Answer

Subfascial lipoma

Question 5

What is the most common presentation of Peutz-Jeghers syndrome?

Accepted Answer

Intussusception

Answer

Pancreatic cancer

Answer

Melanoma

Answer

Malabsorption

Question 6

During surgery of a strangulated inguinal hernia, at which part of the sac should it be opened?

Accepted Answer

Fundus

Answer

Neck

Answer

Body

Answer

Deep ring

Question 7

At surgery for a right inguinal hernia, a 72-year-old man is found to have a hernia sac that is not independent of the bowel wall. The cecum forms part of the wall of the sac. Such a hernia is properly referred to as which of the following?

Accepted Answer

Sliding

Answer

Incarcerated

Answer

Irreducible

Answer

Richter's

Question 8

Which of the following statements regarding Meckel's Diverticulum is false?

Accepted Answer

Intestinal obstruction is the most common presentation in children.

Answer

It is a true diverticulum.

Answer

Gastric mucosa is the most common heterotopic mucosa seen.

Answer

Treatment is diverticulectomy.

Question 9

What is true about strangulation of the intestine?

Accepted Answer

Venous blood flow is usually affected first.

Answer

Arterial blood flow is affected first.

Answer

Blood flow remains normal.

Answer

Gangrene does not occur.

Question 10

Which surgical repair is appropriate for a patient with a femoral hernia?

Accepted Answer

McVay repair

Answer

Bassini repair

Answer

Hunter's repair

Answer

Shouldice repair

Gastrointestinal Surgery — MCQs

Gastrointestinal Surgery — MCQs

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