Gastrointestinal Surgery — MCQs

Gastrointestinal Surgery Indian Medical PG Practice Questions and MCQs

Question 861: Which of the following is NOT a complication of chronic duodenal ulcer?

A. Bleeding
B. Stricture
C. Malignancy (Correct Answer)
D. Perforation

Explanation: **Explanation:** The correct answer is **Malignancy**. Chronic duodenal ulcers (DU) are almost exclusively benign. Unlike gastric ulcers, which carry a 3–5% risk of harboring malignancy and require mandatory biopsy, duodenal ulcers do not undergo malignant transformation. Even when associated with *H. pylori* infection, the risk of adenocarcinoma is confined to the stomach. **Analysis of Options:** * **Bleeding (Option A):** This is the **most common complication** of a duodenal ulcer. It typically occurs due to erosion into the gastroduodenal artery (posterior ulcers). * **Stricture (Option B):** Chronic inflammation and repeated healing of an ulcer near the pylorus lead to scarring and fibrosis. This results in **Gastric Outflow Obstruction (GOO)**, characterized by projectile vomiting of non-bilious, undigested food. * **Perforation (Option D):** This is the **second most common complication**. It usually involves the anterior wall of the first part of the duodenum, leading to peritonitis and the presence of "air under the diaphragm" on X-ray. **NEET-PG High-Yield Pearls:** 1. **Rule of Thumb:** Gastric ulcers = Biopsy (risk of malignancy); Duodenal ulcers = No biopsy needed (virtually always benign). 2. **Most common site for DU:** First part of the duodenum (Superior wall). 3. **Most common site for Perforation:** Anterior wall of the duodenum. 4. **Most common site for Bleeding:** Posterior wall of the duodenum (erosion of Gastroduodenal artery). 5. **H. pylori:** Associated with >90% of duodenal ulcers.

Question 862: Transhiatal esophagectomy is planned for adenocarcinoma of the lower end of the esophagus. What is the correct order of surgical approaches?

A. Abdomen-Neck (Correct Answer)
B. Abdomen-Thorax-Neck
C. Neck-Thorax-Abdomen
D. Abdomen-Thorax

Explanation: **Explanation:** **Transhiatal Esophagectomy (THE)**, popularized by Orringer, is a surgical technique used primarily for cancers of the distal esophagus or gastroesophageal junction. The defining characteristic of this procedure is that the esophagus is mobilized and removed **without a formal thoracotomy**. 1. **Why Abdomen-Neck is Correct:** The procedure involves two primary incisions: * **Laparotomy (Abdomen):** To mobilize the stomach (for the gastric conduit) and the distal esophagus through the diaphragmatic hiatus. * **Cervical Incision (Neck):** To mobilize the cervical esophagus and perform the anastomosis. The thoracic esophagus is mobilized "bluntly" by the surgeon’s hands meeting in the posterior mediastinum from both the abdominal and cervical ends. Since no thoracic incision is made, the approach is strictly **Abdomen-Neck**. 2. **Why Other Options are Incorrect:** * **Abdomen-Thorax-Neck (Option B):** This describes the **McKeown procedure** (Three-stage esophagectomy), which involves a formal right thoracotomy. * **Neck-Thorax-Abdomen (Option C):** This is not a standard sequence for any conventional esophagectomy. * **Abdomen-Thorax (Option D):** This describes the **Ivor-Lewis esophagectomy**, where the anastomosis is performed in the chest rather than the neck. **High-Yield Clinical Pearls for NEET-PG:** * **Indication:** Best suited for distal 1/3rd lesions (Adenocarcinoma) where extensive mediastinal lymphadenectomy is not the primary goal. * **Advantage:** Avoids the respiratory complications associated with a thoracotomy. * **Disadvantage:** It is a "blind" dissection; there is a risk of injury to the azygos vein, thoracic duct, or membranous trachea. * **Most common complication:** Recurrent laryngeal nerve palsy and anastomotic leak (though cervical leaks are easier to manage than thoracic ones).

Question 863: Prepyloric channel ulcer is of which grade?

A. 1
B. 2
C. 3 (Correct Answer)
D. 4

Explanation: ### Explanation The classification of gastric ulcers is based on the **Johnson Classification**, which categorizes ulcers according to their anatomical location and association with gastric acid secretion. **Why Option C is Correct:** * **Type 3 (Grade 3) ulcers** are located in the **prepyloric region** (within 3 cm of the pylorus). * Clinically, Type 3 ulcers behave similarly to duodenal ulcers; they are typically associated with **normal or high gastric acid secretion** and are often linked to *H. pylori* infection. **Why Other Options are Incorrect:** * **Option A (Type 1):** These are the most common. They occur on the **lesser curvature** (near the incisura angularis). They are associated with low to normal acid secretion and result from decreased mucosal defense. * **Option B (Type 2):** These involve **two** ulcers: one in the gastric body (lesser curvature) and one in the duodenum. These are associated with high acid secretion. * **Option D (Type 4):** These occur high on the lesser curvature, near the **gastroesophageal junction**. They are rare and carry a higher risk of bleeding and technical difficulty during surgery. * *(Note: Type 5 ulcers, added later, are associated with chronic NSAID use and can occur anywhere in the stomach).* ### High-Yield Clinical Pearls for NEET-PG: * **Acid Secretion:** Types 2 and 3 are associated with **hyperacidity**, whereas Types 1 and 4 are associated with **hypoacidity** or normal acid levels. * **Surgical Management:** For Type 1, a distal gastrectomy (Billroth I) is often sufficient. For Types 2 and 3 (high acid), a **vagotomy** is usually added to the resection to reduce acid production. * **Most Common Site:** The lesser curvature (Type 1) is the most common site for gastric ulcers.

Question 864: All are indicators of active bleeding from varices during endoscopy, EXCEPT:

A. Active bleeding from a varix
B. White nipple overlying a varix
C. Clots overlying a varix
D. Yellow nipple (Correct Answer)

Explanation: **Explanation:** In the management of portal hypertension and variceal hemorrhage, identifying "stigmata of recent hemorrhage" (SRH) during endoscopy is crucial for diagnosis and therapeutic intervention. **Why "Yellow Nipple" is the correct answer:** There is no clinical entity known as a "yellow nipple" in the context of variceal bleeding. This is a distractor option. The term likely mimics the "White Nipple Sign," but yellow discoloration is not an indicator of active or recent variceal hemorrhage. **Analysis of Incorrect Options (Indicators of Bleeding):** * **Active bleeding (Option A):** This is the most definitive sign, characterized by "spurting" (arterial-like) or "oozing" from a varix. * **White nipple sign (Option B):** This is a high-yield finding. It represents a platelet-fibrin plug overlying a point of recent rupture. It indicates that the varix has bled recently and carries a high risk of re-bleeding if not treated. * **Clots overlying a varix (Option C):** Adherent clots (red plugs) indicate a recent site of hemorrhage where the bleeding has temporarily stopped due to clot formation. **High-Yield Clinical Pearls for NEET-PG:** * **Red Color Signs:** Other endoscopic markers of high bleeding risk include **Cherry red spots**, **Red wheals** (red wales), and **Hematocystic spots**. * **Child-Pugh Score:** The most important prognostic indicator for patients with variceal bleeding. * **Management:** The gold standard for active variceal bleeding is **Endoscopic Variceal Ligation (EVL)** combined with pharmacotherapy (Octreotide or Terlipressin). * **Prophylaxis:** Propranolol (non-selective beta-blocker) is used for primary prophylaxis to reduce portal pressure.

Question 865: What is Ogilvie syndrome?

A. Small bowel obstruction
B. Large bowel obstruction
C. Colonic pseudo-obstruction (Correct Answer)
D. Bowel ischemia

Explanation: **Explanation:** **Ogilvie Syndrome**, also known as **Acute Colonic Pseudo-obstruction (ACPO)**, is a clinical condition characterized by massive dilation of the colon (usually the cecum and right colon) in the **absence of any mechanical cause** of obstruction. 1. **Why Option C is correct:** The underlying pathophysiology involves an imbalance in the autonomic nervous system—specifically, a decrease in parasympathetic activity (S2-S4) or an increase in sympathetic activity, leading to colonic atony. It typically occurs in elderly, bedridden patients with severe systemic illnesses, trauma, or post-surgery (e.g., orthopedic or pelvic procedures). 2. **Why other options are incorrect:** * **Options A & B:** These refer to **mechanical obstructions** where a physical lesion (like a tumor, volvulus, or adhesions) blocks the lumen. In Ogilvie syndrome, the bowel is physically clear, but the "pump" (motility) fails. * **Option D:** Bowel ischemia is a vascular compromise. While ischemia can be a *complication* of Ogilvie syndrome (due to over-distension and mural tension), it is not the definition of the syndrome itself. **High-Yield Clinical Pearls for NEET-PG:** * **Most common site of dilation:** Cecum. * **Critical Diameter:** A cecal diameter **>10–12 cm** carries a high risk of perforation and requires urgent intervention. * **Diagnosis:** Abdominal X-ray shows massive colonic distension; CT scan is the gold standard to rule out mechanical obstruction. * **Management:** * Initial: Conservative (NPO, flatus tube, correction of electrolytes). * Pharmacological: **Neostigmine** (Acetylcholinesterase inhibitor) is the drug of choice (monitor for bradycardia). * Refractory cases: Colonoscopic decompression or cecostomy.

Question 866: Which surgical procedure is indicated for fissure in ano?

A. Seton's procedure
B. Lateral spincterectomy (Correct Answer)
C. Well's procedure
D. Winter's procedure

Explanation: **Explanation:** The primary pathophysiology of a chronic anal fissure is **internal anal sphincter hypertonicity**, which leads to high resting anal pressure and reduced blood flow (ischemia) to the posterior midline of the anal canal, preventing the ulcer from healing. **1. Why Lateral Internal Sphincterotomy (LIS) is the Correct Answer:** LIS is the **gold standard** surgical treatment for chronic anal fissure. By dividing the lower portion of the internal anal sphincter, the procedure reduces resting anal pressure, improves mucosal blood flow, and allows the fissure to heal. The "lateral" approach is preferred over posterior sphincterotomy to avoid the "keyhole deformity" and subsequent fecal soilage. **2. Analysis of Incorrect Options:** * **A. Seton’s Procedure:** This is used in the management of **Fistula-in-ano**, particularly high or complex fistulae, to provide drainage or gradual division of the sphincter muscle while preventing incontinence. * **C. Well’s Procedure (Rectopexy):** This is a surgical technique used for **Rectal Prolapse**, involving the fixation of the rectum to the sacral promontory using a mesh. * **D. Winter’s Procedure:** This is a shunting procedure used in the emergency management of **Priapism** (creating a fistula between the glans penis and the corpus cavernosum). **Clinical Pearls for NEET-PG:** * **Location:** 90% of primary fissures are in the **posterior midline**. If located laterally, suspect underlying conditions like Crohn’s disease, TB, or HIV. * **Clinical Triad (Chronic Fissure):** Hypertrophied anal papilla (internal), the fissure itself, and a **Sentinel pile/tag** (external). * **Medical Management:** First-line treatment includes high-fiber diet, sitz baths, and topical nitrates (GTN) or Calcium Channel Blockers (Diltiazem) to achieve "chemical sphincterotomy."

Question 867: What condition is popularly referred to as "Left sided appendicitis"?

A. Diverticulitis (Correct Answer)
B. Ascending colitis
C. Descending colitis
D. Typhlitis

Explanation: **Explanation:** **Diverticulitis** is popularly referred to as **"Left-sided appendicitis"** because its clinical presentation closely mimics that of acute appendicitis, but the pain and inflammation are localized in the **Left Lower Quadrant (LLQ)**. This is due to the high prevalence of diverticula in the **sigmoid colon**, which is situated on the left side of the pelvis. Similar to appendicitis, patients present with localized abdominal pain, fever, leucocytosis, and guarding/rebound tenderness. **Analysis of Incorrect Options:** * **Ascending colitis:** This involves inflammation of the right side of the colon. Pain would typically be localized to the right side, not the left. * **Descending colitis:** While this affects the left side, it is a general term for inflammation (often ischemic or ulcerative) and does not typically present with the acute, focal "appendicitis-like" inflammatory surgical picture seen in diverticulitis. * **Typhlitis (Neutropenic Enterocolitis):** This is an acute inflammation of the **cecum** (right-sided), typically seen in immunocompromised patients. It is sometimes called "Right-sided syndrome" in specific contexts but is not the "Left-sided appendicitis." **High-Yield Clinical Pearls for NEET-PG:** * **Gold Standard Investigation:** Contrast-Enhanced CT (CECT) of the abdomen is the investigation of choice for acute diverticulitis. * **Contraindications:** Colonoscopy and Barium Enema are **strictly contraindicated** in the acute phase due to the high risk of perforation. * **Classification:** The **Hinchey Classification** is used to grade the severity of diverticulitis (Stage I: Pericolic abscess to Stage IV: Fecal peritonitis). * **True Left-sided Appendicitis:** This can actually occur in patients with **Situs Inversus** or a **Malrotated gut**, but "Left-sided appendicitis" as a clinical moniker specifically refers to Sigmoid Diverticulitis.

Question 868: What is the most common metabolic complication following gastrectomy?

A. Iron deficiency anemia (Correct Answer)
B. Megaloblastic anemia
C. Hypocalcemia
D. Osteoporosis

Explanation: **Explanation:** Following a gastrectomy (total or subtotal), the most common metabolic complication is **Iron deficiency anemia (IDA)**. This occurs due to several factors: 1. **Loss of Gastric Acid (Achlorhydria):** Gastric acid is essential for converting dietary ferric iron ($Fe^{3+}$) to the more absorbable ferrous form ($Fe^{2+}$). 2. **Bypass of Duodenum:** In procedures like Billroth II, the primary site of iron absorption (the duodenum) is bypassed. 3. **Rapid Gastric Emptying:** Reduced transit time limits the duration of iron exposure to the absorptive mucosa. **Analysis of Incorrect Options:** * **B. Megaloblastic Anemia:** While Vitamin $B_{12}$ deficiency occurs due to the loss of Intrinsic Factor (produced by parietal cells), it typically takes 3–5 years to manifest because of significant hepatic stores. IDA develops much earlier and more frequently. * **C & D. Hypocalcemia and Osteoporosis:** These are significant long-term complications due to Vitamin D malabsorption and bypass of the duodenum (the primary site of calcium absorption). However, they occur less frequently and later in the postoperative course compared to IDA. **Clinical Pearls for NEET-PG:** * **Most common overall complication:** Nutritional deficiencies (IDA being the leader). * **Most common site of iron absorption:** Duodenum and proximal jejunum. * **Dumping Syndrome:** The most common *functional* complication after gastrectomy. * **Prophylaxis:** Post-gastrectomy patients require lifelong monitoring of CBC, Iron studies, and $B_{12}$ levels, often requiring parenteral supplementation if oral intake is insufficient.

Question 869: Sister Mary Joseph nodule is most commonly seen with which of the following malignancies?

A. Ovarian cancer
B. Stomach cancer (Correct Answer)
C. Colon cancer
D. Pancreatic cancer

Explanation: ### Explanation **Sister Mary Joseph Nodule (SMJN)** refers to a palpable, firm, and often painful nodule in the umbilicus resulting from the metastasis of an intra-abdominal or pelvic malignancy. **Why Stomach Cancer is the Correct Answer:** Statistically, the most common primary site for SMJN is the **gastrointestinal tract**, and specifically, **Stomach Cancer (Gastric Adenocarcinoma)** is the most frequent cause in men and overall. The spread occurs via lymphatics, venous channels, or contiguous extension along the vestigial remnants (like the urachus or round ligament of the liver). Its presence signifies advanced, metastatic (Stage IV) disease and carries a poor prognosis. **Analysis of Incorrect Options:** * **A. Ovarian Cancer:** This is the most common cause of SMJN in **women**. While a significant cause, it ranks second to gastric cancer when considering the general population. * **C. Colon Cancer:** Though a common GI malignancy that can metastasize to the umbilicus, it is statistically less frequent than gastric primary tumors. * **D. Pancreatic Cancer:** This is a known but less common cause of SMJN compared to stomach and ovarian malignancies. **Clinical Pearls for NEET-PG:** * **Eponym:** Named after Sister Mary Joseph, the surgical assistant to Dr. William Mayo, who first noticed the correlation between umbilical nodules and intra-abdominal cancers. * **Differential Diagnosis:** Must be distinguished from an umbilical hernia or a primary umbilical tumor (e.g., melanoma). * **Other Cutaneous Signs of GI Malignancy:** * **Virchow’s Node:** Left supraclavicular lymphadenopathy. * **Irish’s Node:** Left axillary lymphadenopathy. * **Blumer’s Shelf:** Palpable mass in the pouch of Douglas (rectal shelf). * **Krukenberg Tumor:** Metastasis to the ovary (classically from the stomach).

Question 870: Metabolic complications of subtotal gastrectomy with Billroth I or Billroth II reconstruction include:

A. Anemia
B. Reactive hypoglycemia
C. Dumping syndrome
D. All of the above (Correct Answer)

Explanation: Subtotal gastrectomy with Billroth I or II reconstruction significantly alters gastrointestinal anatomy and physiology, leading to several metabolic and functional complications. ### **Explanation of the Correct Answer** The correct answer is **D (All of the above)** because gastrectomy results in the loss of the stomach’s reservoir function, acid secretion, and intrinsic factor production. 1. **Anemia (Option A):** This is the most common metabolic complication. It occurs due to: * **Iron deficiency:** Loss of gastric acid (which converts ferric iron to absorbable ferrous iron) and bypass of the duodenum (primary site of iron absorption) in Billroth II. * **Vitamin B12 deficiency:** Loss of parietal cells leads to decreased **Intrinsic Factor**, causing megaloblastic anemia. 2. **Reactive Hypoglycemia (Option B):** Also known as **Late Dumping Syndrome**. Rapid gastric emptying leads to a sudden surge in blood glucose, triggering an exaggerated insulin response. This results in symptomatic hypoglycemia 1–3 hours after a meal. 3. **Dumping Syndrome (Option C):** Specifically **Early Dumping**, which occurs 20–30 minutes post-meals. High-osmolarity chyme enters the small intestine rapidly, causing fluid shifts from the intravascular space into the bowel lumen, leading to abdominal pain and vasomotor symptoms (tachycardia, syncope). ### **Clinical Pearls for NEET-PG** * **Most common anemia post-gastrectomy:** Iron deficiency anemia. * **Afferent Loop Syndrome:** Unique to Billroth II; presents as projectile non-bilious vomiting after meals. * **Bone Disease:** Osteomalacia and osteoporosis can occur due to impaired Vitamin D and Calcium absorption. * **Management of Dumping:** High-protein, low-carbohydrate, dry diets (liquids taken between meals). Octreotide is used for refractory cases.

Practice by Chapter

Esophageal Disorders

Practice Questions

Gastric Disorders

Practice Questions

Small Intestine Pathology

Practice Questions

Appendicitis

Practice Questions

Inflammatory Bowel Disease

Practice Questions

Intestinal Obstruction

Practice Questions

Gastrointestinal Bleeding

Practice Questions

Diverticular Disease

Practice Questions

Anorectal Disorders

Practice Questions

Colorectal Neoplasms

Practice Questions

Gastrointestinal Stomas

Practice Questions

Bariatric Surgery Principles

Practice Questions

Want unlimited practice?

Get full access to all questions, explanations, and performance tracking.

Start For Free