Gastrointestinal Surgery — MCQs

Gastrointestinal Surgery Indian Medical PG Practice Questions and MCQs

Question 41: Which of the following is the commonest cause of lower gastrointestinal bleed?

A. Angiodysplasia
B. Enteric fever
C. Diverticulosis
D. Hemorrhoids (Correct Answer)

Explanation: **Explanation:** The correct answer is **Hemorrhoids**. In the context of clinical practice and competitive exams like NEET-PG, it is crucial to distinguish between the "most common cause" and the "most common cause of *massive* or *hospitalized* bleeding." 1. **Hemorrhoids (Correct):** These are the most frequent cause of lower gastrointestinal bleeding (LGIB) in the general population. The bleeding is typically "bright red blood per rectum" (BRBPR), painless, and occurs during or after defecation. While usually minor, its high prevalence makes it the leading cause overall. 2. **Diverticulosis (Incorrect):** This is the most common cause of **massive, painless** LGIB in the elderly that requires hospitalization. While a frequent cause, it is less common than hemorrhoids in the general community. 3. **Angiodysplasia (Incorrect):** These are vascular malformations, most commonly found in the cecum and ascending colon. They are a significant cause of occult or chronic LGIB in patients over 65 but are less common than diverticulosis or hemorrhoids. 4. **Enteric Fever (Incorrect):** Intestinal perforation and hemorrhage are complications of Typhoid (usually in the 3rd week), but this is an infectious etiology and not the leading cause of LGIB globally. **High-Yield Clinical Pearls for NEET-PG:** * **Most common cause of LGIB:** Hemorrhoids. * **Most common cause of major/massive LGIB:** Diverticulosis. * **Most common cause of LGIB in children:** Meckel’s Diverticulum. * **Initial Investigation of choice for LGIB:** Colonoscopy (after hemodynamic stabilization). * **Investigation of choice for obscure/active bleeding (0.5 ml/min):** Technetium-99m labeled RBC scan or CT Angiography.

Question 42: Jeep's disease is also known as?

A. Hemorrhoids
B. Fissure in ano
C. Fistula in ano
D. Pilonidal sinus (Correct Answer)

Explanation: **Explanation:** **Pilonidal Sinus (Option D)** is the correct answer. The term **"Jeep’s Disease"** (or Jeep Seat Disease) originated during World War II when thousands of soldiers developed pilonidal disease. It was believed that the prolonged, bumpy rides in Jeeps caused repetitive friction and trauma to the sacrococcygeal area, forcing shed hair into the skin and leading to the formation of a sinus or abscess. **Why the other options are incorrect:** * **Hemorrhoids (Option A):** These are dilated vascular plexuses in the anal canal. While common, they are associated with constipation and straining, not the specific mechanical trauma linked to "Jeep's disease." * **Fissure in ano (Option B):** This is a longitudinal tear in the anoderm, usually caused by the passage of hard stools. * **Fistula in ano (Option C):** This is a chronic abnormal communication between the epithelialized surface of the anal canal and the perianal skin, typically resulting from a previous anorectal abscess. **High-Yield Clinical Pearls for NEET-PG:** * **Etiology:** It is an **acquired** condition (not congenital), caused by the "drill effect" of hair entering the skin. * **Common Site:** Sacrococcygeal region (natal cleft). * **Risk Factors:** Hirsutism (hairy individuals), obesity, sedentary occupation, and poor local hygiene. * **Histopathology:** The sinus is lined by **squamous epithelium**, but the track is often filled with granulation tissue and tufts of hair. * **Treatment of Choice:** For chronic cases, wide local excision or flap reconstruction (e.g., **Limberg flap**) is preferred to reduce recurrence. For acute abscesses, simple incision and drainage is performed.

Question 43: A 41-year-old obese female patient presents with acute abdominal pain in the right hypochondrium. Ultrasonography reveals a stone in the common bile duct. What is the treatment of choice for a stone in the common bile duct?

A. Observation
B. Chenodeoxycholic acid
C. Endoscopic sphincterotomy (Correct Answer)
D. Antibiotics

Explanation: ### **Explanation** The patient presents with **Choledocholithiasis** (stone in the common bile duct). The primary goal of management is the clearance of the duct to prevent complications like ascending cholangitis or gallstone pancreatitis. **Why Option C is Correct:** **Endoscopic Retrograde Cholangiopancreatography (ERCP) with Endoscopic Sphincterotomy** is the treatment of choice for CBD stones. It allows for both the diagnosis and therapeutic extraction of the stone. By cutting the biliary sphincter (sphincter of Oddi), the stone can be removed using a Dormia basket or Fogarty balloon. In patients with concomitant gallbladder stones, ERCP is usually followed by laparoscopic cholecystectomy. **Why Other Options are Incorrect:** * **Option A (Observation):** CBD stones carry a high risk of life-threatening complications (Charcot’s triad: fever, jaundice, RUQ pain). Therefore, expectant management is never recommended. * **Option B (Chenodeoxycholic acid):** Oral bile acid dissolution therapy is slow, often ineffective for large or calcified stones, and has a high recurrence rate. It is not indicated for acute CBD obstruction. * **Option D (Antibiotics):** While antibiotics are an important adjunct if the patient has signs of infection (cholangitis), they do not remove the mechanical obstruction. Definitive treatment requires stone extraction. **High-Yield Clinical Pearls for NEET-PG:** * **Gold Standard Investigation:** MRCP (Non-invasive, 95% sensitivity). * **Gold Standard Treatment:** ERCP (Invasive, therapeutic). * **Bouveret Syndrome:** Gastric outlet obstruction caused by a large gallstone impacted in the duodenum via a cholecystoduodenal fistula. * **Primary CBD Stones:** Usually brown pigment stones, formed within the duct itself (often due to stasis/infection). Secondary stones (most common) migrate from the gallbladder and are usually cholesterol stones.

Question 44: Which of the following is true about a Mallory-Weiss tear?

A. Hamman's mediastinum
B. Esophagus perforates through all layers
C. Crunching sound on auscultation
D. Symptoms improve with conservative management (Correct Answer)

Explanation: **Explanation:** **Mallory-Weiss Syndrome (MWS)** is characterized by longitudinal mucosal lacerations at the gastroesophageal junction or gastric cardia. It typically occurs after episodes of forceful vomiting, retching, or coughing (often associated with alcohol bingeing). **1. Why Option D is correct:** The majority of Mallory-Weiss tears (80–90%) are superficial and involve only the **mucosa and submucosa**. Because the bleeding is usually arterial but from small vessels, it tends to stop spontaneously. Therefore, **conservative management**—including fluid resuscitation, acid suppression (PPIs), and observation—is the standard of care. Endoscopic intervention (clipping or thermal therapy) is reserved only for active, persistent bleeding. **2. Why other options are incorrect:** * **Options A & C:** **Hamman’s sign** (a crunching sound heard over the precordium synchronous with the heartbeat) is a classic sign of **pneumomediastinum**. This is characteristic of **Boerhaave Syndrome**, not Mallory-Weiss. * **Option B:** Mallory-Weiss involves only a partial-thickness mucosal tear. A **transmural perforation** (involving all layers of the esophagus) defines **Boerhaave Syndrome**, which is a surgical emergency. **Clinical Pearls for NEET-PG:** * **Location:** Most commonly located just below the GE junction on the lesser curvature of the stomach. * **Presentation:** Painless hematemesis following forceful retching. * **Diagnosis:** Upper GI Endoscopy (Gold Standard). * **Risk Factor:** Strong association with chronic alcohol use and hiatal hernia. * **Contrast:** Remember the "B" in **B**oerhaave stands for **B**een through all layers (transmural) and is much more severe than Mallory-Weiss.

Question 45: Regarding the anorectal angle, what is true?

A. It distributes intra-abdominal forces onto the pelvic floor and plays an important role in the continence mechanism. (Correct Answer)
B. It is due to the pull of the external sphincter.
C. It is around 30 degrees at rest.
D. The angle increases at the time of defecation.

Explanation: The **anorectal angle** is a critical anatomical landmark formed at the junction of the rectum and the anal canal. It is fundamental to the mechanism of fecal continence. ### **Why Option A is Correct** The anorectal angle acts as a physical barrier. When intra-abdominal pressure increases (e.g., coughing or lifting), the pressure pushes the anterior rectal wall down onto the anal canal, effectively "kinking" it shut. This **distributes forces onto the pelvic floor** rather than the anal canal, preventing involuntary passage of stool. ### **Analysis of Incorrect Options** * **B is incorrect:** The angle is maintained by the **Puborectalis muscle** (a component of the Levator Ani), which forms a U-shaped sling around the anorectal junction. It is not formed by the external sphincter. * **C is incorrect:** At rest, the anorectal angle is typically between **80 to 100 degrees** (obtuse). An angle of 30 degrees would be pathologically acute. * **D is incorrect:** During defecation, the puborectalis muscle **relaxes**, causing the angle to **become more obtuse (straighten)** to approximately 130–140 degrees. This allows for the smooth passage of the bolus. ### **High-Yield Clinical Pearls for NEET-PG** * **The "Sling" Effect:** The puborectalis muscle pulls the junction anteriorly toward the pubic symphysis. * **Defecography:** This is the gold standard investigation to visualize the dynamic changes of the anorectal angle during straining and evacuation. * **Squatting Position:** This posture naturally increases the anorectal angle (straightens the path), facilitating easier evacuation compared to sitting. * **Nerve Supply:** The puborectalis is supplied by the **S3 and S4** nerve roots (nerve to levator ani) and the inferior rectal branch of the pudendal nerve.

Question 46: Which of the following is NOT a feature of choledocholithiasis (CBD stone)?

A. Pain
B. Fever
C. Jaundice
D. Septic shock (Correct Answer)

Explanation: **Explanation:** The core concept to understand here is the distinction between **uncomplicated choledocholithiasis** (stones in the CBD) and its complication, **acute cholangitis**. **Why Septic Shock is the correct answer:** Choledocholithiasis refers to the presence of stones within the common bile duct. While it causes biliary obstruction, it does not inherently imply infection. **Septic shock** is a feature of **Reynolds' Pentad**, which occurs in severe cases of **Acute Cholangitis** (infection proximal to the obstruction). While choledocholithiasis is the most common cause of cholangitis, septic shock is a systemic manifestation of advanced infection, not a standard feature of the stones themselves. **Analysis of Incorrect Options:** * **Pain (A):** Most patients with CBD stones experience biliary colic or upper abdominal pain due to ductal distension and peristaltic contraction against the obstruction. * **Fever (B):** Low-grade fever can occur due to inflammation of the ductal wall. However, high-grade fever with chills (Charcot’s Triad) specifically points toward the onset of cholangitis. * **Jaundice (C):** This is a hallmark of CBD stones. Obstruction to bile flow leads to conjugated hyperbilirubinemia, clinically manifesting as yellowing of the sclera and skin. **NEET-PG High-Yield Pearls:** 1. **Charcot’s Triad:** Pain + Fever + Jaundice (Diagnostic for Acute Cholangitis). 2. **Reynolds' Pentad:** Charcot’s Triad + Hypotension (Septic Shock) + Altered Mental Status. 3. **Investigation of Choice:** **MRCP** is the gold standard for diagnosis (non-invasive). 4. **Treatment of Choice:** **ERCP** with sphincterotomy and stone extraction (therapeutic). 5. **Courvoisier’s Law:** In a patient with obstructive jaundice, if the gallbladder is palpable, the obstruction is unlikely to be a stone (usually malignancy), as stones cause chronic inflammation and a fibrosed, non-distensible gallbladder.

Question 47: Which anatomical location corresponds to gastric lymph node station 5?

A. Suprapyloric (Correct Answer)
B. Splenic hilum
C. Lesser curvature
D. Greater curvature

Explanation: The Japanese Gastric Cancer Association (JGCA) classification of regional lymph nodes is a high-yield topic for NEET-PG, as it dictates the extent of lymphadenectomy (D1 vs. D2) during gastrectomy. ### **Explanation of the Correct Answer** **Option A (Suprapyloric)** is the correct answer. Gastric lymph node **Station 5** refers specifically to the nodes located along the **suprapyloric artery**, situated just above the pylorus. These nodes are part of the perigastric group (N1) and are routinely removed during a D1 lymphadenectomy for distal gastric cancers. ### **Analysis of Incorrect Options** * **Option B (Splenic hilum):** This corresponds to **Station 10**. These nodes are located at the hilum of the spleen and are typically removed during a D2 dissection for proximal gastric tumors. * **Option C (Lesser curvature):** This area contains **Station 1** (Right paracardial) and **Station 3** (Nodes along the lesser curvature). * **Option D (Greater curvature):** This area contains **Station 4** (Nodes along the short gastric and gastroepiploic vessels) and **Station 2** (Left paracardial). ### **NEET-PG High-Yield Pearls** To master the JGCA classification, remember these key stations: * **Station 1 & 2:** Right and Left Paracardial. * **Station 3:** Lesser curvature. * **Station 4:** Greater curvature. * **Station 5:** Suprapyloric. * **Station 6:** Infrapyloric. * **Station 7:** Left gastric artery (Start of D2/N2 group). * **Station 8:** Common hepatic artery. * **Station 9:** Celiac axis. * **Station 11:** Splenic artery. * **Station 12:** Hepatoduodenal ligament. **Clinical Note:** A **D1 dissection** involves stations 1–6, while a **D2 dissection** (the standard of care for resectable gastric cancer) includes stations 1–12.

Question 48: Sclerotherapy failure is defined as?

A. Unresponsiveness to two consecutive energy sclerotherapies (Correct Answer)
B. Unresponsiveness to three consecutive energy sclerotherapies
C. Remnant bleeding even after sclerotherapy for two successive hospital admissions
D. Failure to heal after a single treatment

Explanation: In the management of esophageal varices, endoscopic sclerotherapy (EST) is a common intervention. However, defining "failure" is crucial for deciding when to escalate to rescue therapies like TIPS (Transjugular Intrahepatic Portosystemic Shunt) or surgery. ### **Explanation of the Correct Answer** **Option A** is correct because, according to standard surgical guidelines (including the Baveno criteria and common surgical textbooks like Bailey & Love), **sclerotherapy failure** is defined as the inability to control bleeding or the occurrence of early rebleeding despite **two sessions** of endoscopic therapy within a single hospital admission. If two consecutive attempts at sclerotherapy (or band ligation) fail to achieve hemostasis, the procedure is deemed ineffective, and further endoscopic attempts are likely to increase the risk of complications (like esophageal perforation or deep ulceration) without benefit. ### **Analysis of Incorrect Options** * **Option B:** Waiting for three sessions is considered too risky. By the third failure, the patient’s hemodynamic stability is usually compromised, and the mortality rate rises significantly. * **Option C:** While rebleeding in successive admissions indicates poor long-term control, the clinical definition of "failure" specifically refers to the acute management of a single bleeding episode to guide immediate surgical or radiological intervention. * **Option D:** A single treatment may fail due to technical difficulties or massive hemorrhage; a second attempt is standard practice before declaring the modality a failure. ### **High-Yield Clinical Pearls for NEET-PG** * **Gold Standard:** Endoscopic Variceal Ligation (EVL) is currently preferred over Sclerotherapy due to fewer complications (e.g., strictures). * **Sclerosants used:** Sodium tetradecyl sulfate (1-3%), Ethanolamine oleate (5%), and Polidocanol. * **Next Step after Failure:** If two endoscopic sessions fail, the immediate next step is usually **Balloon Tamponade** (Sengstaken-Blakemore tube) as a bridge to **TIPS** or a **Portosystemic Shunt**. * **Prophylaxis:** Propranolol (non-selective beta-blocker) is the drug of choice for primary prophylaxis of variceal bleeding.

Question 49: Which is the most common symptom of achalasia?

A. Regurgitation
B. Dysphagia (Correct Answer)
C. Heartburn
D. Weight loss

Explanation: **Explanation:** **Achalasia Cardia** is a primary esophageal motility disorder characterized by the failure of the Lower Esophageal Sphincter (LES) to relax and the absence of esophageal peristalsis. 1. **Why Dysphagia is the correct answer:** **Dysphagia** is the hallmark and most common presenting symptom, occurring in over 95% of patients. A high-yield clinical feature of achalasia is that the dysphagia occurs for **both solids and liquids simultaneously** from the onset. This distinguishes it from esophageal malignancy, where dysphagia typically progresses from solids to liquids. 2. **Analysis of Incorrect Options:** * **Regurgitation (Option A):** This is the second most common symptom (approx. 75-90%). It involves the effortless reflux of undigested food retained in the dilated esophagus, often occurring at night or when lying flat. * **Heartburn (Option C):** While it occurs in nearly 40% of patients, it is often a "pseudo-heartburn" caused by the fermentation of retained food (lactic acid production) rather than actual acid reflux. * **Weight loss (Option D):** This occurs as the disease progresses due to decreased oral intake, but it is usually slow and less profound than the rapid weight loss seen in esophageal cancer. **NEET-PG High-Yield Clinical Pearls:** * **Gold Standard Investigation:** Esophageal Manometry (shows incomplete LES relaxation and aperistalsis). * **Barium Swallow Finding:** "Bird’s beak" or "Rat-tail" appearance of the distal esophagus. * **Pathology:** Degeneration of the **Auerbach’s (myenteric) plexus** in the esophageal wall. * **Treatment of Choice:** Laparoscopic Heller’s Myotomy with partial fundoplication (to prevent reflux).

Question 50: A 24-year-old female presents with suspected appendicitis and undergoes surgery. Intraoperatively, the appendix appears normal, but the ileum is inflamed, enlarged, and shows multiple adhesions with surrounding fat involvement. What is the most likely diagnosis?

A. Ileocaecal tuberculosis (Correct Answer)
B. Diverticulosis
C. Intussusception
D. Carcinoid

Explanation: **Explanation:** The clinical scenario describes a "pseudo-appendicitis" presentation where the intraoperative findings point toward **Ileocaecal Tuberculosis (TB)**. In endemic regions like India, ileocaecal TB is a primary differential for right iliac fossa pathology. The description of an inflamed, thickened ileum with **"fat wrapping"** (creeping fat) and adhesions is characteristic of the hyperplastic variety of intestinal TB. **Why Option A is correct:** Ileocaecal TB often presents with symptoms mimicking appendicitis. Intraoperatively, the hallmark features include a thickened terminal ileum, mesenteric lymphadenopathy, and "fat wrapping" where the mesenteric fat extends over the serosal surface of the bowel. This leads to the formation of a "doughy" mass or adhesions. **Why other options are incorrect:** * **B. Diverticulosis:** Typically affects the sigmoid colon in older patients and presents with painless bleeding or left-sided pain (diverticulitis). It does not cause ileal inflammation or fat involvement. * **C. Intussusception:** Usually presents with "red currant jelly" stools and signs of intestinal obstruction. Intraoperatively, one would see one segment of the bowel telescoped into another, not generalized ileal inflammation. * **D. Carcinoid:** While the appendix is the most common site for carcinoid tumors, they usually appear as a firm, yellow nodule at the tip. They do not typically cause diffuse ileal inflammation and adhesions unless there is a massive desmoplastic reaction. **NEET-PG High-Yield Pearls:** * **Most common site of GI TB:** Ileocaecal region (due to increased lymphoid tissue/Peyer's patches and physiological stasis). * **Gold Standard Diagnosis:** Colonoscopy with biopsy showing caseating granulomas. * **Stierlin’s Sign:** A radiological sign in TB where the caecum is narrow/shrunken while the terminal ileum is dilated. * **Differential Diagnosis:** Crohn’s disease also shows "creeping fat," but in the Indian context, TB must be ruled out first.

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