Gastrointestinal Surgery Practice Questions

Q: An X-ray of the abdomen reveals a specific finding. Identify the finding and its associated pathology:

Coffee bean sign - Sigmoid volvulus. ***Coffee bean sign - Sigmoid volvulus*** - The **coffee bean sign** on plain abdominal X-ray is **pathognomonic** for sigmoid volvulus, showing a characteristic dilated sigmoid loop resembling a coffee bean. - This finding represents **twisted sigmoid colon** with air-fluid levels, typically seen in the **left upper quadrant** extending toward the right side. *Bird beak sign - Achalasia* - The **bird beak sign** is seen on **barium swallow studies**, not plain abdominal X-rays, showing narrowed gastroesophageal junction. - This finding is specific to **achalasia** involving the **esophagus**, not intestinal pathology visible on abdominal radiographs. *Coffee bean sign - Cecal volvulus* - **Cecal volvulus** typically presents with a **dilated cecum** in the left upper quadrant, but lacks the characteristic coffee bean configuration. - The radiographic appearance is more of a **kidney-shaped** or **comma-shaped** dilated bowel loop rather than the coffee bean sign. *Bird of prey sign - Sigmoid volvulus* - The **bird of prey sign** is a **barium enema** finding, not visible on plain abdominal X-rays. - This sign shows the **twisted point** of sigmoid volvulus on contrast studies, appearing like a bird's beak, but requires contrast enhancement to visualize.

Q: Which of the following is NOT true about appendicular rupture?

Early antibiotics prevent rupture.. **Explanation:** The correct answer is **C**. While antibiotics are a crucial part of the management of appendicitis, they **do not prevent rupture** if the underlying cause is a mechanical luminal obstruction. Appendicular rupture is primarily a mechanical process: obstruction leads to increased intraluminal pressure, which compromises venous and then arterial supply, resulting in gangrene and perforation. Antibiotics cannot reverse this mechanical progression. **Analysis of Options:** * **Option A:** True. Extremes of age (very young and elderly) are at higher risk. Children have a thin appendiceal wall and an underdeveloped omentum, while the elderly often present late due to vague symptoms and have age-related vascular compromise. * **Option B:** True. A fecalith (appendicolith) is the most common cause of luminal obstruction. Its presence is strongly associated with a higher risk of gangrene and early perforation compared to non-obstructive appendicitis. * **Option D:** True (in the context of standard surgical teaching). While "interval appendectomy" is a debated topic for stable appendicular masses, the standard surgical principle for a ruptured appendix with generalized peritonitis is immediate appendectomy and peritoneal lavage. **High-Yield Clinical Pearls for NEET-PG:** * **Timing:** Rupture typically occurs 24–48 hours after the onset of symptoms. * **Site:** The most common site of perforation is the **antimesenteric border**, just distal to the site of obstruction (the point of poorest blood supply). * **Clinical Sign:** A sudden, temporary relief of pain followed by worsening generalized abdominal pain and high-grade fever often indicates that the appendix has ruptured. * **Diagnosis:** Contrast-Enhanced CT (CECT) is the gold standard for diagnosing complications like perforation or abscess.

Q: Hiatus hernia is treated by:

Nissens' fundoplication. **Explanation:** Hiatal hernia occurs when the upper part of the stomach protrudes through the esophageal hiatus of the diaphragm. The definitive management for symptomatic hiatal hernias, particularly those associated with Gastroesophageal Reflux Disease (GERD) or paraesophageal types, is surgical correction. **Why Nissen’s Fundoplication is Correct:** **Nissen’s Fundoplication (360° wrap)** is the gold standard surgical procedure for hiatal hernia and GERD. It involves mobilizing the lower esophagus and wrapping the gastric fundus completely around the distal esophagus. This reinforces the Lower Esophageal Sphincter (LES) pressure, prevents acid reflux, and anchors the stomach below the diaphragm after the hiatal defect is repaired (crural repair). **Analysis of Incorrect Options:** * **Option A:** While surgery is often indicated after medical failure in GERD, the question asks for the specific *treatment* of the hernia itself. Anatomical defects like hiatal hernias cannot be "cured" by medicine; surgery is the definitive corrective method. * **Option C:** Medical treatment (PPIs, lifestyle changes) only manages the symptoms of reflux but does not address the mechanical herniation or the risk of incarceration/strangulation seen in paraesophageal hernias. **High-Yield Clinical Pearls for NEET-PG:** * **Types:** Type I (Sliding) is most common (95%); Type II-IV are Paraesophageal. * **Indications:** All symptomatic paraesophageal hernias should be operated on due to the risk of gastric volvulus. * **Other Wraps:** **Toupet** (270° posterior wrap) and **Dor** (180-200° anterior wrap) are used if esophageal motility is poor to prevent postoperative dysphagia. * **Complication:** "Gas bloat syndrome" is a known side effect of a wrap that is too tight.

Q: High-resolution manometry is the investigation of choice in all except:

Gastroesophageal reflux disease (GERD). **Explanation:** High-resolution manometry (HRM) is the **gold standard** for assessing esophageal motor function. It measures the pressure and coordination of esophageal contractions and the relaxation of the lower esophageal sphincter (LES). **Why GERD is the correct answer:** The diagnosis of **Gastroesophageal Reflux Disease (GERD)** is primarily clinical, supported by **24-hour ambulatory pH monitoring** (the gold standard for diagnosis) and Upper GI Endoscopy (to check for complications like Barrett’s or esophagitis). While manometry is performed *before* anti-reflux surgery to rule out motility disorders (like Achalasia) and to locate the LES for pH probe placement, it is **not** the investigation of choice for diagnosing GERD itself. **Why the other options are incorrect:** * **Achalasia Cardia:** HRM is the investigation of choice. It shows incomplete LES relaxation (Integrated Relaxation Pressure >15 mmHg) and aperistalsis. * **Diffuse Esophageal Spasm (DES):** HRM is the investigation of choice, characterized by "corkscrew esophagus" on barium swallow and premature contractions (reduced Distal Latency) on manometry. * **Nutcracker Esophagus (Jackhammer Esophagus):** HRM is the investigation of choice, showing high-amplitude peristaltic contractions (Distal Contractile Integral >8000 mmHg·s·cm). **Clinical Pearls for NEET-PG:** * **Gold Standard for GERD:** 24-hour pH monitoring (DeMeester Score). * **Gold Standard for Motility Disorders:** High-Resolution Manometry (Chicago Classification). * **Bird’s Beak Appearance:** Classic radiological sign of Achalasia Cardia. * **Heller’s Myotomy:** The surgical treatment of choice for Achalasia, usually combined with a partial fundoplication.

Question 1

What is true about Peutz-Jeghers syndrome?

Accepted Answer

Pigmentary changes in skin and mucous membrane around the mouth

Answer

Adenomatous polyps in the intestine

Answer

The most common pattern of inheritance is autosomal recessive

Answer

20-30% are premalignant

Question 2

An X-ray of the abdomen reveals a specific finding. Identify the finding and its associated pathology:

Accepted Answer

Coffee bean sign - Sigmoid volvulus

Answer

Bird beak sign - Achalasia

Answer

Coffee bean sign - Cecal volvulus

Answer

Bird of prey sign - Sigmoid volvulus

Question 3

Which of the following is NOT true about appendicular rupture?

Accepted Answer

Early antibiotics prevent rupture.

Answer

It is common in extremes of age.

Answer

It is common in individuals with fecalith obstruction.

Answer

Appendectomy is always performed in the presence of rupture.

Question 4

What permanent deleterious effects are seen if 25% of the small intestine is resected?

Accepted Answer

Diarrhea

Answer

Fat malabsorption syndrome

Answer

Intestinal failure

Answer

None

Question 5

Hiatus hernia is treated by:

Accepted Answer

Nissens' fundoplication

Answer

Surgery when medical treatment has failed

Answer

Medical treatment only

Answer

None of the above

Question 6

What is the earliest manifestation observed after a gastrectomy?

Accepted Answer

Loss of storage capacity

Answer

Increased incidence of infection

Answer

Loss of hydrochloric acid

Answer

Loss of intrinsic factor

Question 7

Which of the following statements is false regarding the Sengstaken-Blakemore tube?

Accepted Answer

Pressure in the esophageal balloon is maintained at 60 mm Hg.

Answer

Used to arrest acute variceal bleeding.

Answer

The gastric balloon should be inflated with 200-250 mL of air.

Answer

Endotracheal intubation prior to tube insertion reduces the risk of pulmonary aspiration.

Question 8

Which of the following is NOT true about hyperplastic tuberculosis?

Accepted Answer

Surgery is the treatment of choice.

Answer

Most common site is the ileo-caecal region.

Answer

Presents as a mass in the right iliac fossa.

Answer

Barium studies are characteristic.

Question 9

What is the most common complication of achalasia?

Accepted Answer

Recurrent pulmonary infections

Answer

Stricture of esophagus

Answer

Pleurisy

Answer

Peptic ulcer

Question 10

High-resolution manometry is the investigation of choice in all except:

Accepted Answer

Gastroesophageal reflux disease (GERD)

Answer

Achalasia cardia

Answer

Diffuse esophageal spasm (DES)

Answer

Nutcracker syndrome

Gastrointestinal Surgery — MCQs

Gastrointestinal Surgery — MCQs

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