Gastrointestinal Surgery Practice Questions

Q: Which of the following are investigations for duodenal ulcer?

Barium meal, Upper GI endoscopy, Abdominal X-ray erect view. **Explanation:** The diagnosis of duodenal ulcer (DU) relies on identifying the ulcer niche and assessing for potential complications like perforation. 1. **Upper GI Endoscopy (UGIE):** This is the **gold standard** and most sensitive investigation. It allows direct visualization of the ulcer, assessment of size/depth, and the ability to perform a biopsy (though DU is rarely malignant compared to gastric ulcers) or a Rapid Urease Test (RUT) for *H. pylori*. 2. **Barium Meal:** Historically significant, it shows the "ulcer niche" (barium-filled crater) or "clover-leaf deformity" in chronic cases due to scarring. Note that Barium *swallow* is for the esophagus, while Barium *meal* is for the stomach and duodenum. 3. **Abdominal X-ray (Erect View):** This is crucial for diagnosing a **perforated duodenal ulcer**. It reveals "pneumoperitoneum" (gas under the diaphragm) in approximately 75-80% of perforation cases. **Analysis of Incorrect Options:** * **Options A & C:** Include **Barium swallow**, which is used to evaluate the esophagus (e.g., achalasia, motility disorders) and does not reach the duodenum effectively for ulcer diagnosis. * **Option D:** **Hypotonic duodenography** is a specialized technique used primarily to visualize periampullary tumors or pancreatic pathologies by inducing duodenal atony; it is not a routine or primary investigation for simple duodenal ulcers. **High-Yield Clinical Pearls for NEET-PG:** * **Most common site:** First part of the duodenum (usually the anterior wall). * **Perforation:** Most common on the **anterior wall**. * **Bleeding:** Most common from the **posterior wall** (erosion of the gastroduodenal artery). * **H. pylori:** Associated with >90% of duodenal ulcers. * **Investigation of Choice for Perforation:** X-ray Chest/Abdomen (Erect) showing free air under the diaphragm.

Q: A patient is admitted to the hospital after ingesting lye. The following day he complains of chest pain. His pulse is 120 bpm. On physical examination, he is found to have subcutaneous crepitus on palpation. His chest x-ray shows widening of the mediastinum and a pleural effusion. What has most likely occurred?

Esophageal perforation. **Explanation:** The clinical presentation is classic for **Esophageal Perforation** secondary to caustic ingestion. Lye (a strong alkali) causes **liquefactive necrosis**, which deeply penetrates the esophageal wall, leading to rapid transmural destruction and perforation. **Why Option C is correct:** The triad of **chest pain, tachycardia (120 bpm), and subcutaneous crepitus** (Hamman’s sign/subcutaneous emphysema) strongly indicates air escaping from the esophagus into the mediastinum and soft tissues. The chest X-ray findings of **mediastinal widening** (mediastinitis) and **pleural effusion** further confirm a full-thickness breach in the esophageal integrity. **Why other options are incorrect:** * **A. Aortic rupture:** While it causes chest pain and mediastinal widening, it does not cause subcutaneous crepitus and is not a typical complication of lye ingestion. * **B. Coagulation necrosis:** This is characteristic of **acid ingestion**, which forms a limiting eschar. Lye causes *liquefactive necrosis*, which is far more invasive and prone to perforation. * **D. Oropharyngeal inflammation:** While present after ingestion, it cannot account for systemic symptoms like tachycardia, mediastinal widening, or crepitus. **NEET-PG High-Yield Pearls:** * **Alkali (Lye):** Liquefactive necrosis (deeper injury). Most common site of stricture: Middle third of the esophagus. * **Acid:** Coagulation necrosis (superficial injury). Most common site of injury: Pre-pyloric region of the stomach. * **Management:** Early endoscopy (within 12–24 hours) is the gold standard to grade the injury, but it is **contraindicated** if perforation is already suspected clinically or radiologically. * **Mackler’s Triad (for perforation):** Vomiting, chest pain, and subcutaneous emphysema.

Q: What is the most common type of esophageal cancer?

Squamous cell carcinoma. **Explanation:** **1. Why Squamous Cell Carcinoma (SCC) is the correct answer:** Globally, **Squamous Cell Carcinoma (SCC)** remains the most common histological type of esophageal cancer. It typically arises from the squamous epithelium lining the esophagus and is most frequently located in the **upper and middle thirds**. While Adenocarcinoma is rapidly increasing in incidence in Western nations (due to obesity and GERD), SCC still accounts for approximately 80–90% of cases worldwide, particularly in the "Asian Esophageal Cancer Belt." **2. Analysis of Incorrect Options:** * **B. Adenocarcinoma:** This is the most common type in **Western countries** and typically arises in the **lower third** of the esophagus from Barrett’s esophagus (metaplastic columnar epithelium). However, globally, it remains second to SCC. * **C. Adenoid cystic carcinoma:** This is a rare primary esophageal malignancy, more commonly associated with salivary glands. It carries a different prognosis and clinical presentation. * **D. Mucoepidermoid carcinoma:** Another extremely rare variant of esophageal cancer characterized by a mixture of squamous and mucus-secreting cells. **3. Clinical Pearls for NEET-PG:** * **Most common site (SCC):** Middle third of the esophagus. * **Most common site (Adenocarcinoma):** Lower third/GE junction. * **Risk Factors (SCC):** Smoking, Alcohol, Achalasia cardia, Tylosis, Corrosive injury, and Plummer-Vinson Syndrome. * **Risk Factors (Adenocarcinoma):** GERD, Barrett’s Esophagus, and Obesity. * **Investigation of choice:** Upper GI Endoscopy with biopsy. * **Staging investigation of choice:** Contrast-Enhanced CT (CECT) for distant spread; Endoscopic Ultrasound (EUS) for T and N staging.

Q: Which of the following is the first symptom to appear in a case of acute intestinal obstruction?

Colicky pain. In acute intestinal obstruction, the sequence of symptoms is a classic high-yield topic for NEET-PG. The correct answer is **Colicky pain**. ### 1. Why Colicky Pain is the First Symptom The hallmark of mechanical obstruction is the body's attempt to overcome the blockage. As soon as the lumen is obstructed, the proximal bowel undergoes vigorous **hyperperistalsis** to push the contents past the site of obstruction. This intense muscular contraction results in intermittent, cramping, or "colicky" abdominal pain. It is almost always the inaugural symptom. ### 2. Why Other Options are Incorrect * **Vomiting:** This follows pain. The timing depends on the level of obstruction: early in high small-bowel obstruction and late (or even absent) in distal large-bowel obstruction. * **Distension:** This occurs as gas and fluid accumulate proximal to the block. It takes time for the bowel to dilate sufficiently to be clinically visible, making it a later sign than pain. * **Constipation (Obstipation):** This is the final cardinal feature. Even after a complete block, the bowel distal to the obstruction may still empty its remaining contents. Absolute constipation (failure to pass flatus or feces) only occurs once the distal segment is evacuated. ### 3. Clinical Pearls for NEET-PG * **Cardinal Features:** The four classic symptoms of obstruction are **Pain, Vomiting, Distension, and Obstipation**. * **Pain Characteristics:** If the pain changes from colicky to **continuous and localized**, it strongly suggests **strangulation** (ischemia), which is a surgical emergency. * **X-ray Findings:** The earliest radiological sign is dilated bowel loops with multiple air-fluid levels (best seen on an erect abdominal X-ray). * **Sequence Rule:** In high-level obstruction, vomiting is prominent and early; in low-level obstruction, distension is prominent and pain is more prolonged.

Q: Which of the following is NOT true for femoral hernias?

More common than inguinal hernias. **Explanation:** The correct answer is **C (More common than inguinal hernias)** because this statement is epidemiologically false. In both males and females, **inguinal hernias are the most common type of groin hernia.** While femoral hernias are significantly more common in females than in males (due to a wider pelvis), they still only account for about 20-25% of all hernias in women, whereas inguinal hernias account for the majority. **Analysis of other options:** * **A. More common in females:** This is true. The female-to-male ratio for femoral hernias is approximately 10:1. * **B. More common to strangulate:** This is true. Due to the narrow, rigid boundaries of the femoral canal (specifically the lacunar ligament), femoral hernias have the highest risk of incarceration and strangulation (approx. 30-40%) among all groin hernias. * **D. Mostly asymptomatic:** This is true. Many femoral hernias remain small and asymptomatic until they present acutely with strangulation or bowel obstruction. They are often missed on physical examination, especially in obese patients. **High-Yield Clinical Pearls for NEET-PG:** * **McVay’s Repair:** The traditional tissue-based repair for femoral hernias (approximates the conjoint tendon to Cooper’s ligament). * **Position:** A femoral hernia is located **below and lateral** to the pubic tubercle (Inguinal hernias are above and medial). * **Richter’s Hernia:** Femoral hernias are the most common site for Richter’s hernia (where only a portion of the bowel wall is entrapped). * **Cloquet’s Node:** A lymph node found within the femoral canal that may be mistaken for an incarcerated femoral hernia.

Q: What is true about oesophageal perforation?

Barium swallow is diagnostic. **Explanation:** Oesophageal perforation is a surgical emergency requiring rapid diagnosis. **Barium swallow** is considered the gold standard for diagnosis (Option A). While Gastrografin (water-soluble contrast) is often used first to avoid barium-induced mediastinitis, it has a higher false-negative rate (approx. 10-25%). If Gastrografin is negative but clinical suspicion remains high, a Barium swallow must be performed as its higher density better detects small leaks. **Analysis of Incorrect Options:** * **Option B:** Treatment is not always primary repair. Management depends on the time of presentation, location, and the state of the underlying oesophagus. Options range from conservative management (small, contained leaks) to diversion or esophagectomy. * **Option C:** The most common cause of oesophageal perforation is **iatrogenic** (e.g., during endoscopy or dilatation), not traumatic injury. * **Option D:** Delaying repair beyond 24 hours significantly increases mortality due to mediastinitis and sepsis. Early intervention (within 24 hours) is the goal for "early" perforations. **Clinical Pearls for NEET-PG:** * **Mackler’s Triad:** Vomiting, chest pain, and subcutaneous emphysema (pathognomonic for Boerhaave Syndrome). * **Most common site (Iatrogenic):** Cricopharyngeus muscle (upper sphincter). * **Most common site (Boerhaave):** Left posterolateral aspect of the distal esophagus (2-3 cm above the GE junction). * **Chest X-ray findings:** Mediastinal widening, pneumomediastinum, or "V sign of Naclerio."

Q: A thirty-year-old male presents with epigastric pain radiating to the back. He reports pain that wakes him at night and is relieved by food. His past medical history includes two episodes of perforated duodenal ulcers treated surgically with omental patches. Post-operatively, his symptoms have been managed with proton pump inhibitors and analgesics. What is the most likely diagnosis?

Duodenal ulcer. **Explanation:** The clinical presentation is classic for a **Duodenal Ulcer (DU)**. The patient’s symptoms—epigastric pain radiating to the back, nocturnal pain (which occurs when the stomach is empty), and pain relieved by food intake—are hallmark features. The history of recurrent perforations despite surgical repair (omental patch) and PPI therapy suggests a refractory or chronic acid-peptic disease process. **Why the correct answer is right:** * **Pain-Food-Relief Pattern:** In DU, food buffers the gastric acid, providing temporary relief. Pain typically occurs 2–3 hours after meals or at night when acid secretion is unopposed. * **Recurrence:** DU has a high recurrence rate if the underlying cause (e.g., *H. pylori* or hypergastrinemia) is not addressed. **Why incorrect options are wrong:** * **Gastric Ulcer:** Pain is typically aggravated by food (Pain-Food-Agony) and often leads to weight loss due to sitophobia (fear of eating). * **Atrophic Gastritis:** This involves mucosal atrophy and hypochlorhydria (low acid), which does not present with the classic "hunger pain" or a history of perforations. * **Chronic Pancreatitis:** While it causes epigastric pain radiating to the back, the pain is usually exacerbated by food (especially fatty meals) and is often associated with steatorrhea or weight loss, not relief by food. **NEET-PG High-Yield Pearls:** 1. **Most common site for DU:** First part of the duodenum (Bulbar region). 2. **Most common site for perforation:** Anterior wall of the duodenum. 3. **Most common site for bleeding:** Posterior wall (involvement of the Gastroduodenal artery). 4. **Zollinger-Ellison Syndrome (ZES):** Always suspect ZES in patients with recurrent, refractory, or multiple post-bulbar ulcers.

Q: Which of the following statements is true regarding inguinal hernia?

Pain could indicate obstruction. **Explanation:** **Correct Option: A (Pain could indicate obstruction)** In an uncomplicated inguinal hernia, the swelling is typically painless or associated with a dull ache. The sudden onset of sharp or severe pain is a clinical "red flag" suggesting **obstruction** (lumen of the bowel is blocked) or **strangulation** (blood supply is compromised). This transition from a reducible, painless swelling to an irreducible, painful one is a surgical emergency. **Analysis of Incorrect Options:** * **B. Direct inguinal hernia is more common in children:** This is incorrect. **Indirect inguinal hernias** are the most common type in children (and all age groups) due to the failure of the *processus vaginalis* to obliterate. Direct hernias are acquired and seen primarily in the elderly due to weakened abdominal musculature (Hesselbach’s triangle). * **C. Spigelian hernia occurs through the rectus sheath:** This is incorrect. A Spigelian hernia occurs through the **Spigelian aponeurosis** (the "semilunar line"), which is the transition zone between the muscle fibers and the aponeurosis of the transversus abdominis, lateral to the rectus sheath. * **D. Inguinal hernia is more common on the left side:** This is incorrect. Inguinal hernias are more common on the **right side**. This is attributed to the later descent of the right testis and the delayed obliteration of the right processus vaginalis. **High-Yield Clinical Pearls for NEET-PG:** * **Most common hernia overall:** Indirect Inguinal Hernia (regardless of sex). * **Most common hernia in females:** Indirect Inguinal Hernia (though Femoral hernias are more common in females than in males). * **Hesselbach’s Triangle Boundaries:** Lateral border of rectus abdominis (medial), Inferior epigastric vessels (lateral), and Inguinal ligament (inferior). * **Gold Standard Repair:** Lichtenstein tension-free mesh repair.

Q: A 65-year-old male has an ulcer in the lesser curvature. Biopsy is negative for malignancy, and the ulcer has not healed after 6 weeks of H2 blocker therapy. What is the next appropriate treatment?

Continue H2 blocker therapy for another 6 weeks. ### Explanation **1. Why Option D is Correct:** The management of a gastric ulcer differs significantly from a duodenal ulcer because of the risk of occult malignancy. However, the standard protocol for a benign-appearing gastric ulcer (confirmed by biopsy) is a **12-week trial** of medical therapy before labeling it "refractory." In this case, the patient has only completed 6 weeks of H2 blocker therapy. While Proton Pump Inhibitors (PPIs) are now the first-line treatment, the classic surgical teaching (often tested in NEET-PG) dictates that if an ulcer hasn't healed at 6 weeks, the medical management should be extended to a full 12-week course. Only if the ulcer fails to heal after 12 weeks of compliant therapy is it considered "non-healing" or "refractory," warranting surgical intervention. **2. Why Other Options are Incorrect:** * **Option A (Repeat Biopsy):** While repeat biopsy is mandatory if an ulcer fails to heal after a *full* course of therapy to rule out malignancy, it is premature at 6 weeks if the initial biopsy was negative and the treatment course is incomplete. * **Option B & C (Gastrectomy):** Surgery is indicated only for complications (perforation, hemorrhage, obstruction) or true refractoriness (failure after 12 weeks). Jumping to a partial or total gastrectomy at 6 weeks is an over-treatment for a biopsy-negative ulcer. **3. Clinical Pearls for NEET-PG:** * **Healing Rates:** Most gastric ulcers heal within 8 weeks with PPIs and 12 weeks with H2 blockers. * **Location:** The most common site for a gastric ulcer is the **lesser curvature** (Type I ulcer). * **Rule of Malignancy:** All gastric ulcers must be biopsied (at least 6–8 samples from the ulcer edge) because, unlike duodenal ulcers, they carry a risk of being malignant. * **Refractory Ulcer Definition:** Failure to heal after 12 weeks of H2 blockers or 8 weeks of PPI therapy.

Q: What is the most common complication of ERCP?

Acute pancreatitis. **Explanation:** **Acute Pancreatitis** is the most common complication following Endoscopic Retrograde Cholangiopancreatography (ERCP), occurring in approximately **3% to 10%** of patients. The underlying mechanism involves mechanical trauma to the papilla, hydrostatic injury from contrast injection into the pancreatic duct, or thermal injury during sphincterotomy. Risk factors include female gender, young age, previous post-ERCP pancreatitis (PEP), and difficult cannulation. **Analysis of Incorrect Options:** * **B. Perforation:** Occurs in <1% of cases. It is usually related to sphincterotomy (peri-ampullary) or endoscope-induced trauma (duodenal wall). While serious, it is significantly less frequent than pancreatitis. * **C. Bleeding:** Occurs in about 1–2% of cases, primarily following endoscopic sphincterotomy. It can be immediate or delayed but is less common than inflammatory complications. * **D. Infection:** Includes cholangitis and cholecystitis. These occur in roughly 1% of cases, usually due to incomplete biliary drainage or contaminated equipment. **High-Yield Clinical Pearls for NEET-PG:** * **Definition of PEP:** New or worsened abdominal pain with amylase/lipase levels >3x the upper limit of normal, 24 hours after the procedure, requiring hospitalization. * **Prevention:** Prophylactic **Rectal Indomethacin** or Diclofenac (NSAIDs) is the gold standard for reducing the incidence of PEP. * **Most common cause of death** following ERCP is also complications related to severe acute pancreatitis. * **Diagnostic vs. Therapeutic:** Purely diagnostic ERCP has been largely replaced by MRCP; ERCP is now primarily a **therapeutic** modality.

Question 1

Which of the following are investigations for duodenal ulcer?

Accepted Answer

Barium meal, Upper GI endoscopy, Abdominal X-ray erect view

Answer

Hypotonic duodenography, Barium swallow, Abdominal X-ray erect view

Answer

Hypotonic duodenography, Barium meal, Barium swallow

Answer

Hypotonic duodenography, Barium meal

Question 2

A patient is admitted to the hospital after ingesting lye. The following day he complains of chest pain. His pulse is 120 bpm. On physical examination, he is found to have subcutaneous crepitus on palpation. His chest x-ray shows widening of the mediastinum and a pleural effusion. What has most likely occurred?

Accepted Answer

Esophageal perforation

Answer

Aortic rupture

Answer

Coagulation necrosis

Answer

Oropharyngeal inflammation

Question 3

What is the most common type of esophageal cancer?

Accepted Answer

Squamous cell carcinoma

Answer

Adenocarcinoma

Answer

Adenoid cystic carcinoma

Answer

Mucoepidermoid carcinoma

Question 4

Which of the following is the first symptom to appear in a case of acute intestinal obstruction?

Accepted Answer

Colicky pain

Answer

Constipation

Answer

Vomiting

Answer

Distension

Question 5

Which of the following is NOT true for femoral hernias?

Accepted Answer

More common than inguinal hernias

Answer

More common in females

Answer

More common to strangulate

Answer

Mostly asymptomatic

Question 6

What is true about oesophageal perforation?

Accepted Answer

Barium swallow is diagnostic

Answer

Treatment is primary repair

Answer

Most common after traumatic injury

Answer

Repair delayed beyond 24 hours

Question 7

A thirty-year-old male presents with epigastric pain radiating to the back. He reports pain that wakes him at night and is relieved by food. His past medical history includes two episodes of perforated duodenal ulcers treated surgically with omental patches. Post-operatively, his symptoms have been managed with proton pump inhibitors and analgesics. What is the most likely diagnosis?

Accepted Answer

Duodenal ulcer

Answer

Gastric ulcer

Answer

Atrophic gastritis

Answer

Chronic pancreatitis

Question 8

Which of the following statements is true regarding inguinal hernia?

Accepted Answer

Pain could indicate obstruction

Answer

Direct inguinal hernia is more common in children

Answer

Spigelian hernia occurs through the rectus sheath

Answer

Inguinal hernia is more common on the left side

Question 9

A 65-year-old male has an ulcer in the lesser curvature. Biopsy is negative for malignancy, and the ulcer has not healed after 6 weeks of H2 blocker therapy. What is the next appropriate treatment?

Accepted Answer

Continue H2 blocker therapy for another 6 weeks

Answer

Repeat biopsy

Answer

Total gastrectomy

Answer

Partial gastrectomy

Question 10

What is the most common complication of ERCP?

Accepted Answer

Acute pancreatitis

Answer

Perforation

Answer

Bleeding

Answer

Infection

Gastrointestinal Surgery — MCQs

Gastrointestinal Surgery — MCQs

On this page

Practice by Chapter

Want unlimited practice?