Gastrointestinal Surgery Practice Questions

Q: Which is the most common cause of the below condition?

Gastric carcinoma. ***Gastric carcinoma*** - **Antral carcinoma** is the most common cause of **gastric outlet obstruction** in adults, causing pyloric stenosis through tumor growth and fibrosis. - Typically presents with **progressive dysphagia**, **weight loss**, and **epigastric pain** with a palpable mass. *Gastric ulcer* - Gastric ulcers rarely cause **pyloric stenosis** as they typically occur in the body or fundus, not near the pylorus. - When they do occur near the pylorus, they more commonly cause **perforation** or **bleeding** rather than obstruction. *Duodenal ulcer* - Can cause **pyloroduodenal obstruction** through scarring and fibrosis, but is **less common** than gastric carcinoma as a cause of gastric outlet obstruction. - Usually associated with **H. pylori infection** and presents with **postprandial pain** rather than progressive obstruction. *Hiatus hernia* - Involves **herniation of stomach** through the **diaphragmatic hiatus** into the thoracic cavity. - Does **not cause pyloric stenosis** as it affects the gastroesophageal junction, not the gastric outlet.

Q: Which of the following is not an indication for splenectomy?

All of the above. **Explanation:** The correct answer is **D. All of the above**, as none of these conditions are absolute indications for splenectomy in the modern era of medical management. Splenectomy is typically reserved for cases that are refractory to medical therapy or present with specific complications. 1. **Immune Thrombocytopenic Purpura (ITP):** Splenectomy is no longer a first-line treatment. It is indicated only if the patient fails medical management (Corticosteroids, IVIG, or Rituximab) or has life-threatening bleeding. 2. **Beta Thalassemia:** Splenectomy is indicated only in cases of **Thalassemia Intermedia** or **Major** when there is massive splenomegaly causing mechanical discomfort, symptomatic hypersplenism (worsening anemia/leukopenia), or when transfusion requirements exceed 200-250 ml/kg/year. 3. **Sickle Cell Disease:** Splenectomy is rarely indicated because most patients undergo **"autosplenectomy"** (splenic infarction) by childhood. It is only considered in specific emergencies like **Splenic Sequestration Crisis** or a splenic abscess. **Clinical Pearls for NEET-PG:** * **Most common indication for elective splenectomy:** ITP. * **Most common indication for emergency splenectomy:** Trauma (Splenic rupture). * **Vaccination Protocol:** To prevent **OPSI (Overwhelming Post-Splenectomy Infection)**, patients must be vaccinated against *H. influenzae*, *N. meningitidis*, and *S. pneumoniae* at least **2 weeks before** elective surgery or **2 weeks after** emergency surgery. * **Peripheral Smear Findings:** Look for **Howell-Jolly bodies**, Pappenheimer bodies, and Heinz bodies post-splenectomy.

Q: A patient with a gastric ulcer has a biopsy that reveals malignancy. What is the next step in management?

CT abdomen. **Explanation:** Once a gastric ulcer is histologically confirmed as malignant (Gastric Adenocarcinoma), the immediate next step is **clinical staging** to determine the extent of the disease and assess resectability. **Why CT Abdomen is the correct answer:** Contrast-Enhanced Computed Tomography (CECT) of the abdomen and pelvis is the **standard initial staging investigation** for gastric cancer. It is highly effective at evaluating the local extent of the tumor (T stage), identifying regional lymphadenopathy (N stage), and detecting distant visceral metastases (M stage), particularly to the liver. **Analysis of Incorrect Options:** * **A. Ultrasound abdomen:** While useful for screening, USG lacks the sensitivity and specificity required for accurate TNM staging of gastric cancer and cannot reliably assess nodal involvement or depth of wall invasion. * **C. CA 19-9 level:** Tumor markers (CEA, CA 19-9) are not used for the initial diagnosis or staging of gastric cancer. They are primarily used for monitoring recurrence post-treatment. * **D. Laparoscopy:** Diagnostic laparoscopy (with peritoneal washings) is the most sensitive method for detecting occult peritoneal carcinomatosis. However, it is performed **after** a CT scan has ruled out distant hematogenous metastasis, making it a subsequent step rather than the immediate next step. **NEET-PG High-Yield Pearls:** * **Investigation of Choice (IOC) for Diagnosis:** Upper GI Endoscopy + Biopsy (minimum 6-8 biopsies from the ulcer edge). * **IOC for Staging:** CECT Abdomen and Pelvis. * **Most accurate for T and N staging:** Endoscopic Ultrasound (EUS). * **Most sensitive for peritoneal metastasis:** Diagnostic Laparoscopy. * **Virchow’s Node:** Left supraclavicular lymph node involvement (Troisier’s sign).

Q: Regarding Achalasia Cardia, which of the following statements are true?

1, 2, and 4 are true, while 3 and 5 are false.. **Achalasia Cardia** is a primary esophageal motility disorder characterized by the failure of the Lower Esophageal Sphincter (LES) to relax and the absence of progressive peristalsis in the distal esophagus. This results from the degeneration of the **myenteric (Auerbach’s) plexus**. ### **Analysis of Statements** 1. **Statement 1 (True):** The hallmark pathophysiology is the loss of inhibitory postganglionic neurons (which release Nitric Oxide and VIP) in the myenteric plexus, leading to an hypertensive, non-relaxing LES. 2. **Statement 2 (True):** Dysphagia is the most common symptom, characteristically occurring for **both solids and liquids** from the onset (unlike esophageal cancer, where it progresses from solids to liquids). 3. **Statement 3 (False):** Barium swallow typically shows a **"Bird’s beak"** or "Rat-tail" appearance due to persistent narrowing at the GE junction with proximal dilatation. A "Corkscrew esophagus" is characteristic of Diffuse Esophageal Spasm (DES). 4. **Statement 4 (True):** **Manometry** is the **Gold Standard** for diagnosis. Key findings include incomplete LES relaxation (residual pressure >10 mmHg) and aperistalsis in the smooth muscle portion of the esophagus. 5. **Statement 5 (False):** While Achalasia is a premalignant condition, the most common associated cancer is **Squamous Cell Carcinoma** (due to chronic stasis and irritation), not Adenocarcinoma (which is associated with GERD/Barrett’s). ### **Clinical Pearls for NEET-PG** * **Investigation of Choice:** Esophageal Manometry. * **Initial Investigation:** Barium Swallow. * **To Rule out Pseudo-achalasia (Malignancy):** Upper GI Endoscopy. * **Treatment of Choice:** Laparoscopic Heller’s Myotomy with partial fundoplication (Dor or Toupet). * **POEM (Per-Oral Endoscopic Myotomy):** A newer, scarless endoscopic treatment option.

Q: Which of the following statements about carcinoid of the appendix is NOT TRUE?

Frequently metastasizes.. **Explanation:** Carcinoid tumors (Neuroendocrine tumors) are the most common primary tumors of the appendix. Understanding their behavior is crucial for NEET-PG, as management depends heavily on size and location. **Why Option C is NOT TRUE:** Appendiceal carcinoids are generally **indolent** and have a very low potential for malignancy. Metastasis is extremely rare, occurring in less than 2% of cases, and is typically only seen in tumors larger than 2 cm. Because they rarely spread, simple appendectomy is curative for most patients. **Analysis of Other Options:** * **Option A (Arises from argentaffin tissue):** This is true. These tumors originate from the subepithelial **Kulchitsky cells** (argentaffin cells) located in the crypts of Lieberkühn. * **Option B (Cells express S-100):** This is true. While primarily neuroendocrine (expressing Chromogranin and Synaptophysin), appendiceal carcinoids often show positivity for **S-100 protein**, particularly in the sustentacular cells or due to their origin from the subepithelial nerve plexus. * **Option D (Common at the tip):** This is true. Approximately **70-75%** of appendiceal carcinoids are located at the **distal tip**, where they are often found incidentally during appendectomy. **High-Yield Clinical Pearls for NEET-PG:** 1. **Size Criteria for Surgery:** * ** 2 cm:** Requires **Right Hemicolectomy** due to increased risk of nodal metastasis. 2. **Carcinoid Syndrome:** Very rare in appendiceal carcinoids unless there are extensive liver metastases (as the liver metabolizes serotonin via the portal circulation). 3. **Most common site of GI Carcinoid:** Historically the appendix, but recent data suggests the **small intestine (ileum)** is now the most common site.

Q: Malignant transformation is commonly seen in which type of ulcer?

None of the above. **Explanation:** The correct answer is **None of the above** because peptic ulcers (gastric, duodenal, or stomal) are essentially benign inflammatory conditions and do not undergo "malignant transformation." **1. Understanding the Concept:** In clinical practice, a gastric ulcer may be found to be malignant upon biopsy, but this is almost always because the lesion was a **primary gastric carcinoma** that underwent ulceration (ulcerated-type cancer), rather than a benign ulcer turning into cancer. True malignant transformation of a pre-existing chronic benign gastric ulcer is extremely rare (less than 1%). **2. Analysis of Options:** * **Gastric Ulcer (Option B):** While gastric ulcers carry a risk of being malignant at the time of diagnosis (necessitating mandatory biopsy), they do not "transform" from benign to malignant. * **Chronic Duodenal Ulcer (Option C):** Duodenal ulcers are virtually **never** malignant. If a lesion is found in the first part of the duodenum, it is almost certainly benign. * **Stomal Ulcer (Option A):** These occur at the site of a previous anastomosis (e.g., Gastrojejunostomy). Like duodenal ulcers, they are complications of acid-pepsin aggression and do not possess premalignant potential. **3. NEET-PG High-Yield Pearls:** * **Rule of Thumb:** All gastric ulcers must be biopsied (6–8 samples from the edge) to rule out malignancy, whereas duodenal ulcers do not require routine biopsy. * **Premalignant Conditions of the Stomach:** These include Adenomatous gastric polyps (especially >2cm), Chronic atrophic gastritis, Gastric remnants (post-gastrectomy after 15–20 years), and Menetrier’s disease. * **Most Common Site for Gastric Cancer:** Historically the antrum, though the incidence of proximal/cardia lesions is rising.

Question 1

What is the treatment of choice for perforation of the cervical esophagus?

Accepted Answer

Cervical exploration and drainage of the superior mediastinum, along with the use of antibiotics

Answer

Bed rest and use of antibiotics

Answer

Nasogastric intubation and use of antibiotics

Answer

Resection and colonic interposition

Question 2

A 60-year-old male is diagnosed with carcinoma of the stomach. A CT scan of the abdomen reveals a 4x4 cm mass in the antrum with involvement of celiac and right gastric nodes. What is the management of choice?

Accepted Answer

Subtotal gastrectomy

Answer

Total gastrectomy

Answer

Palliative care

Answer

Chemotherapy

Question 3

Which of the following statements is NOT true regarding gastrointestinal tuberculosis?

Accepted Answer

Surgical management is the treatment of choice

Answer

Formation of transverse ulcers

Answer

Common site is the ileocecal region

Answer

An obtuse ileocecal angle is seen

Question 4

Which is the most common cause of the below condition?

Accepted Answer

Gastric carcinoma

Answer

Gastric ulcer

Answer

Duodenal ulcer

Answer

Hiatus hernia

Question 5

Which of the following is not an indication for splenectomy?

Accepted Answer

All of the above

Answer

Immune thrombocytopenic purpura (ITP)

Answer

Beta thalassemia

Answer

Sickle cell disease

Question 6

A patient with a gastric ulcer has a biopsy that reveals malignancy. What is the next step in management?

Accepted Answer

CT abdomen

Answer

Ultrasound abdomen

Answer

CA 19-9 level

Answer

Laparoscopy

Question 7

Regarding Achalasia Cardia, which of the following statements are true?

Accepted Answer

1, 2, and 4 are true, while 3 and 5 are false.

Answer

1, 2, and 3 are false, while 4 and 5 are true.

Answer

2, 3, and 4 are true, while 1 and 5 are false.

Answer

1, 3, and 5 are true, while 2 and 4 are false.

Question 8

All of the following are indications for surgery in a case of duodenal ulcer except?

Accepted Answer

Multiple large ulcers

Answer

Acute perforation of ulcer

Answer

Pyloric stenosis

Answer

Massive haemorrhage

Question 9

Which of the following statements about carcinoid of the appendix is NOT TRUE?

Accepted Answer

Frequently metastasizes.

Answer

Arises from argentaffin tissue.

Answer

Cells express S-100.

Answer

Common at the tip.

Question 10

Malignant transformation is commonly seen in which type of ulcer?

Accepted Answer

None of the above

Answer

Stomal ulcer

Answer

Gastric ulcer

Answer

Chronic duodenal ulcer

Gastrointestinal Surgery — MCQs

Gastrointestinal Surgery — MCQs

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