Gastrointestinal Surgery Practice Questions

Q: A patient presents with progressive dysphagia and a barium swallow shows a bird-beak appearance. What is the investigation of choice?

Manometry. **Explanation:** The clinical presentation of progressive dysphagia (to both solids and liquids) combined with the classic **"bird-beak" appearance** on barium swallow is diagnostic of **Achalasia Cardia**. **1. Why Manometry is the Correct Answer:** While a barium swallow is often the initial screening test, **Esophageal Manometry is the Gold Standard (Investigation of Choice)** for Achalasia. It confirms the diagnosis by demonstrating the characteristic triad: * Failure of the Lower Esophageal Sphincter (LES) to relax upon swallowing. * Aperistalsis in the distal two-thirds of the esophagus. * Elevated resting LES pressure (>30 mmHg). **2. Why Other Options are Incorrect:** * **pH Monitoring:** This is the gold standard for diagnosing Gastroesophageal Reflux Disease (GERD), not motility disorders. * **Endoscopy:** This is the first investigation performed to rule out "Pseudoachalasia" (malignancy at the GE junction mimicking achalasia), but it cannot confirm the functional motility defect. * **CECT Scan:** Useful for staging esophageal cancer but has no role in the primary diagnosis of motility disorders like Achalasia. **High-Yield Clinical Pearls for NEET-PG:** * **Pathophysiology:** Degeneration of the **Auerbach’s (myenteric) plexus** in the esophageal wall. * **Barium Swallow Findings:** "Bird-beak" or "Rat-tail" appearance with a dilated proximal esophagus (Mega-esophagus). * **Heller’s Myotomy:** The surgical treatment of choice (usually performed laparoscopically with a Dor/Toupet fundoplication). * **POEM (Per-Oral Endoscopic Myotomy):** A newer, minimally invasive endoscopic treatment option. * **Chicago Classification:** Used to categorize Achalasia into three types based on manometry findings (Type II is the most common and most responsive to treatment).

Q: What is the most common site for carcinoma of the stomach?

Antrum. **Explanation:** The most common site for gastric carcinoma is the **Antrum (and Pylorus)**, accounting for approximately **50-60%** of all cases. This is primarily because the antrum is the site most frequently affected by chronic *Helicobacter pylori* infection and chronic atrophic gastritis, both of which are significant precursors to the intestinal type of gastric adenocarcinoma. **Analysis of Options:** * **A. Antrum (Correct):** As mentioned, the distal portion of the stomach (antrum and prepyloric region) remains the most frequent site globally. * **B. Fundus:** This is a relatively rare site for primary gastric cancer. However, there is a rising global incidence of cancers involving the **Cardia** (proximal stomach) due to the increase in GERD and obesity. * **C. Lesser Curvature:** While the lesser curvature is the most common site for **benign gastric ulcers**, it is the second most common site for malignancy after the antrum (specifically the distal lesser curvature). * **D. Greater Curvature:** This is an uncommon site for adenocarcinoma. If a mass is found here, clinicians often suspect other pathologies like Gastrointestinal Stromal Tumors (GIST) or Lymphoma. **High-Yield Clinical Pearls for NEET-PG:** * **Most common histological type:** Adenocarcinoma (95%). * **Lauren Classification:** Divides gastric cancer into **Intestinal** (associated with environmental factors/H. pylori) and **Diffuse** (associated with E-cadherin/CDH1 mutations and Signet ring cells). * **Virchow’s Node:** Left supraclavicular lymphadenopathy indicating metastasis. * **Sister Mary Joseph Nodule:** Periumbilical metastasis. * **Krukenberg Tumor:** Metastasis to the ovaries (classically showing signet ring cells). * **Irish Node:** Left axillary lymph node involvement.

Q: Amyl nitrate inhalation test is used to detect which of the following conditions?

Achalasia cardia. **Explanation:** The **Amyl nitrate inhalation test** is a pharmacological provocative test used in the evaluation of **Achalasia Cardia**. **1. Why Achalasia Cardia is correct:** Achalasia is characterized by the failure of the Lower Esophageal Sphincter (LES) to relax due to the loss of inhibitory nitrergic neurons. Amyl nitrate is a potent smooth muscle relaxant and vasodilator. When inhaled, it releases nitric oxide, which acts directly on the esophageal smooth muscle to cause relaxation of the hypertensive LES. During a barium swallow, if the administration of amyl nitrate causes the "bird’s beak" narrowing to open and allows the barium to drain into the stomach, it confirms a functional (muscular) obstruction rather than a fixed mechanical one. **2. Why other options are incorrect:** * **Carcinoma Esophagus:** This is a mechanical/organic obstruction caused by a physical tumor mass. Amyl nitrate (a smooth muscle relaxant) will not relax malignant tissue; therefore, the obstruction remains unchanged. * **Esophageal Diverticulum:** These are structural outpouchings (e.g., Zenker’s) caused by pressure changes or traction. They do not involve a primary failure of LES relaxation that responds to nitrates. * **Tracheoesophageal Fistula (TEF):** This is a congenital or acquired anatomical communication between the trachea and esophagus, requiring surgical correction, not pharmacological testing. **Clinical Pearls for NEET-PG:** * **Gold Standard Investigation:** Esophageal Manometry (shows incomplete LES relaxation and aperistalsis). * **Barium Swallow Sign:** "Bird’s beak" or "Rat-tail" appearance. * **Heller’s Myotomy:** The surgical treatment of choice. * **Chagas Disease:** A common secondary cause of achalasia (caused by *Trypanosoma cruzi*).

Q: What is the most common symptom of bronchial adenoma?

Recurrent hemoptysis. **Explanation:** **Bronchial adenomas** (a historical term primarily referring to **Carcinoid tumors**, but also including adenoid cystic carcinomas and mucoepidermoid carcinomas) are slow-growing, highly vascular epithelial tumors arising from the bronchial mucosa. **Why Recurrent Hemoptysis is Correct:** The hallmark of these tumors is their **extreme vascularity** and their location, as approximately 80% arise in the central (major) bronchi. Because they are endobronchial and covered by a fragile, vascular mucous membrane, they bleed easily upon irritation or coughing. This leads to **recurrent hemoptysis** in about 50% of patients, making it the most common presenting symptom. **Analysis of Incorrect Options:** * **Wheeze (A):** While endobronchial obstruction can cause a localized wheeze (often mistaken for asthma), it is less frequent than bleeding. * **Dyspnea (B):** Shortness of breath occurs only when the tumor significantly occludes a major airway or causes massive collapse/consolidation, which usually happens later in the disease progression. * **Pain (C):** Lung parenchyma lacks pain fibers. Chest pain only occurs if the tumor involves the parietal pleura or chest wall, which is rare for these typically central tumors. **NEET-PG High-Yield Pearls:** * **Most common type:** Bronchial Carcinoid (90%). * **Classic Triad:** Cough, recurrent hemoptysis, and localized wheeze. * **Radiology:** May show "Golden S-sign" if the tumor causes obstructive collapse of the right upper lobe. * **Diagnosis:** Bronchoscopy is definitive (shows a pink/cherry-red fleshy mass), but biopsy carries a **high risk of bleeding** due to vascularity. * **Treatment:** Surgical resection (Sleeve resection or Lobectomy) is the treatment of choice.

Q: Which of the following is NOT true about gastric carcinoma?

Surgically non-curative lesions should not be resected.. **Explanation:** The management of gastric carcinoma involves a balance between curative resection and palliative care. **Why Option C is the correct answer (False statement):** In gastric cancer, even if a lesion is deemed **surgically non-curative** (e.g., due to distant metastasis or local invasion), surgery may still be indicated for **palliation**. Palliative gastrectomy or bypass procedures are performed to alleviate life-threatening complications such as gastric outlet obstruction, uncontrollable hemorrhage, or perforation. Therefore, the statement that non-curative lesions should *not* be resected is clinically incorrect. **Analysis of Incorrect Options (True statements):** * **Option A:** *H. pylori* is a Class I carcinogen. It causes chronic atrophic gastritis and intestinal metaplasia, significantly increasing the risk of distal gastric adenocarcinoma. * **Option B:** D2 gastrectomy refers to the extent of lymphadenectomy (removal of N1 and N2 nodes). It can be performed as part of either a **subtotal** or a **total gastrectomy**, depending on the tumor's location (proximal vs. distal). * **Option D:** Total gastrectomy removes all parietal cells, which produce **Intrinsic Factor**. This leads to the malabsorption of Vitamin B12, necessitating lifelong parenteral supplementation to prevent megaloblastic anemia. **NEET-PG High-Yield Pearls:** * **Standard of Care:** D2 lymphadenectomy is the gold standard for curative resection. * **Lauren Classification:** Divides gastric cancer into **Intestinal** (associated with *H. pylori*) and **Diffuse** (associated with CDH1 mutation/Signet ring cells). * **Virchow’s Node:** Left supraclavicular lymphadenopathy indicating metastatic spread. * **Sister Mary Joseph Nodule:** Periumbilical metastasis.

Q: Which of the following is NOT a risk factor for carcinoma of the stomach?

Duodenal peptic ulcer. **Explanation:** The correct answer is **Duodenal peptic ulcer**. In surgical pathology, duodenal ulcers (DU) are associated with high gastric acid secretion (hyperchlorhydria). Gastric cancer, conversely, thrives in an environment of low acid (hypochlorhydria) and mucosal atrophy. Therefore, patients with a history of DU actually have a **decreased risk** of developing gastric adenocarcinoma. **Analysis of Options:** * **Blood Group A:** There is a well-established genetic association between Blood Group A and the **diffuse type** of gastric cancer (Lauren classification). * **Atrophic Gastritis:** This is a precursor lesion. Chronic inflammation leads to intestinal metaplasia and dysplasia, significantly increasing the risk of the **intestinal type** of gastric cancer. * **Partial Gastrectomy:** Patients who have undergone a distal gastrectomy (especially Billroth II reconstruction) for benign disease are at increased risk after 15–20 years. This is due to chronic **alkaline reflux** (bile reflux) causing "stump cancer" in the remnant stomach. **NEET-PG High-Yield Pearls:** 1. **H. pylori Paradox:** While *H. pylori* is the #1 risk factor for both, the strain and host response determine the outcome. Antral-predominant infection leads to DU (low cancer risk), while pangastritis leads to atrophy and cancer. 2. **Lauren Classification:** * **Intestinal Type:** Associated with environmental factors (diet, *H. pylori*), older age, and hematogenous spread. * **Diffuse Type:** Associated with Blood Group A, younger age, and transmural/lymphatic spread (e.g., Linitis Plastica). 3. **Dietary Factors:** High intake of nitrates/nitrites (smoked foods) and low Vitamin C intake are significant risk factors.

Q: A 27-year-old woman presents with high fever and abdominal pain. Initially, the pain is around the navel but shifts to the right lower quadrant. A CT scan is provided. Which structure is affected?

Appendix. ***Appendix*** - Classic presentation of **periumbilical pain** migrating to the **right lower quadrant (McBurney's point)** with fever strongly indicates **acute appendicitis**. - CT findings typically show **appendiceal wall thickening >6mm**, **periappendiceal fat stranding**, and possible **appendicolith** or fluid collection. *Right ovary* - **Ovarian pathology** (torsion, cysts) typically presents with **sudden onset pelvic pain** without the characteristic pain migration pattern. - Usually lacks **systemic signs** like high fever and **Rovsing's sign** (pain in RLQ when palpating LLQ) seen in appendicitis. *Ileocecal junction* - **Ileocecal pathology** (Crohn's disease, intussusception) presents with **crampy abdominal pain** and **diarrhea**, not the classic appendicitis pain pattern. - CT would show **bowel wall thickening** at the junction rather than isolated appendiceal inflammation with fat stranding. *Ascending colon* - **Ascending colon pathology** typically presents with **right-sided abdominal pain** that is more diffuse and associated with **bowel symptoms**. - CT findings would show **colonic wall thickening** or **diverticular changes** rather than the focal appendiceal inflammation seen in appendicitis.

Question 1

A patient presents with progressive dysphagia and a barium swallow shows a bird-beak appearance. What is the investigation of choice?

Accepted Answer

Manometry

Answer

pH monitoring

Answer

Endoscopy

Answer

CECT scan

Question 2

What is the most common site for carcinoma of the stomach?

Accepted Answer

Antrum

Answer

Fundus

Answer

Lesser curvature

Answer

Greater curvature

Question 3

Amyl nitrate inhalation test is used to detect which of the following conditions?

Accepted Answer

Achalasia cardia

Answer

Carcinoma esophagus

Answer

Oesophageal diverticulum

Answer

Transeoesophageal fistula

Question 4

What is the most common symptom of bronchial adenoma?

Accepted Answer

Recurrent hemoptysis

Answer

Wheeze

Answer

Dyspnea

Answer

Pain

Question 5

Which of the following is NOT true about gastric carcinoma?

Accepted Answer

Surgically non-curative lesions should not be resected.

Answer

Helicobacter pylori association is present.

Answer

D2 gastrectomy includes total gastrectomy.

Answer

Patients undergoing total gastrectomy should be given vitamin B12.

Question 6

An elderly patient presented with early satiety and weight loss, attributing these symptoms to aging. Upper endoscopy revealed a large mass in the stomach. Which statement is TRUE regarding gastric carcinoma?

Accepted Answer

The incidence is increased in patients with gastric ulcer disease.

Answer

During resection, it is safe to leave cancer at the cut edges.

Answer

Draining lymph nodes should not be removed.

Answer

It is caused by diverticulitis.

Question 7

Which of the following is NOT a risk factor for carcinoma of the stomach?

Accepted Answer

Duodenal peptic ulcer

Answer

Blood group A

Answer

Atrophic gastritis

Answer

Partial gastrectomy

Question 8

Which statement is true regarding esophageal leiomyoma?

Accepted Answer

On CT, it appears as an ovoid intramural mass with a smooth outline.

Answer

Commonly found in the proximal third of the esophagus.

Answer

It represents an overgrowth of skeletal muscle.

Answer

The overall prognosis is typically poor.

Question 9

What is the investigation of choice for esophageal stricture caused by corrosive poisoning?

Accepted Answer

Endoscopy

Answer

Barium meal

Answer

Pharyngoscopy

Answer

X-rays

Question 10

A 27-year-old woman presents with high fever and abdominal pain. Initially, the pain is around the navel but shifts to the right lower quadrant. A CT scan is provided. Which structure is affected?

Accepted Answer

Appendix

Answer

Right ovary

Answer

Ileocecal junction

Answer

Ascending colon

Gastrointestinal Surgery — MCQs

Gastrointestinal Surgery — MCQs

On this page

Practice by Chapter

Want unlimited practice?