Gastrointestinal Surgery Practice Questions

Q: A gastric ulcer located 3 cm from the pylorus and associated with duodenal ulcers is classified as which type?

Type 3. ### Explanation The classification of gastric ulcers is based on the **Modified Johnson Classification**, which categorizes ulcers according to their location and association with acid secretion. **Why Type 3 is Correct:** * **Type 3 ulcers** are located in the **prepyloric region** (within 3 cm of the pylorus). * Clinically, they behave similarly to duodenal ulcers and are frequently associated with **hypersecretion of gastric acid**. * The presence of a concurrent duodenal ulcer further confirms this classification, as Type 3 ulcers often coexist with duodenal pathology. **Analysis of Incorrect Options:** * **Type 1 (Option A):** The most common type. Located on the **lesser curvature** (incisura angularis). It is associated with low to normal acid secretion and is not linked to duodenal ulcers. * **Type 2 (Option B):** Involves two ulcers: one on the **body of the stomach** and one in the **duodenum**. While it involves a duodenal ulcer, the gastric component is typically on the body, not specifically the prepyloric region. * **Type 4 (Option D):** Located high on the lesser curvature, near the **gastroesophageal junction**. These are rare and associated with low acid secretion. * *(Note: Type 5 is associated with chronic NSAID use and can occur anywhere in the stomach).* **High-Yield Clinical Pearls for NEET-PG:** * **Acid Status:** Types 2 and 3 are associated with **high gastric acid**; Types 1 and 4 are associated with **low/normal acid**. * **Surgical Management:** Because Types 2 and 3 mimic duodenal ulcer pathophysiology, surgical treatment typically requires a **vagotomy** (to reduce acid) in addition to an antrectomy. * **Mnemonic:** "1 and 4 are low (acid), 2 and 3 are high (acid)."

Q: Seton's procedure is a treatment for which of the following conditions?

Fistula in ano. **Explanation:** **Seton’s procedure** is a surgical technique used primarily for the management of **Fistula in ano**, particularly "high" or complex fistulae that traverse a significant portion of the anal sphincter muscles. A Seton is a non-absorbable thread (like silk, prolene, or rubber) passed through the fistula tract. It works via two mechanisms: 1. **Cutting Seton:** Gradually cuts through the sphincter muscle, allowing fibrosis to occur behind it. This prevents the sudden separation of muscle ends, thereby preserving fecal continence. 2. **Draining Seton:** Keeps the tract open to allow pus to drain, preventing recurrent abscess formation and allowing the tract to mature. **Why other options are incorrect:** * **Hemorrhoids:** Treated via rubber band ligation, sclerotherapy, or hemorrhoidectomy (Milligan-Morgan/Ferguson). * **Fissure in ano:** The surgical gold standard is **Lateral Internal Sphincterotomy (LIS)**. * **Pilonidal sinus:** Managed by excision and primary closure, or techniques like the **Z-plasty** or **Bascom’s procedure**. **High-Yield Clinical Pearls for NEET-PG:** * **Goodsall’s Law:** Predicts the trajectory of the fistula tract based on the location of the external opening (Anterior = straight; Posterior = curved to midline). * **Park’s Classification:** Categorizes fistulae into Intersphincteric (most common), Transsphincteric, Suprasphincteric, and Extrasphincteric. * **Kshara Sutra:** An Ayurvedic medicated Seton often asked in exams as an alternative treatment for fistula in ano. * **MRI** is the gold standard investigation for evaluating complex fistulae.

Q: Which vessel needs to be ligated in a patient with a bleeding peptic ulcer?

Gastroduodenal artery. **Explanation:** The most common site for a bleeding peptic ulcer is the **posterior wall of the first part of the duodenum (D1)**. Anatomically, the **Gastroduodenal Artery (GDA)** runs immediately posterior to the first part of the duodenum. When a peptic ulcer erodes through the posterior duodenal wall, it directly involves the GDA, leading to massive upper gastrointestinal hemorrhage. Therefore, ligation or underrunning of the GDA is the definitive surgical step to control bleeding in such cases. **Analysis of Options:** * **Gastroduodenal Artery (Correct):** It is a branch of the Common Hepatic Artery and the primary source of bleeding in posterior duodenal ulcers. * **Superior Pancreatico-duodenal Artery:** This is a terminal branch of the GDA. While it supplies the duodenum, the main trunk of the GDA is the vessel typically eroded by the ulcer. * **Left Gastric Artery:** This is the most common artery involved in bleeding **gastric ulcers** (usually located on the lesser curvature). It is not the primary vessel for duodenal ulcers. * **Left Gastroepiploic Artery:** This vessel runs along the greater curvature of the stomach and is rarely involved in standard peptic ulcer bleeds. **High-Yield Clinical Pearls for NEET-PG:** * **Most common site of Peptic Ulcer perforation:** Anterior wall of the duodenum (presents with pneumoperitoneum). * **Most common site of Peptic Ulcer bleeding:** Posterior wall of the duodenum (presents with hematemesis/melena). * **Surgical Procedure:** For refractory bleeding, a longitudinal duodenotomy is performed, and the GDA is ligated using a "three-point" or "U-stitch" technique. * **Dieulafoy’s Lesion:** A rare cause of massive GI bleed involving a large submucosal artery, most commonly in the proximal stomach.

Q: What is the most common carcinoma of the upper one-third of the esophagus?

Squamous cell carcinoma. **Explanation:** The esophagus is histologically lined by **non-keratinized stratified squamous epithelium**. In the upper and middle thirds of the esophagus, **Squamous Cell Carcinoma (SCC)** remains the most common histological subtype worldwide and in India. * **Why Option B is Correct:** The upper one-third of the esophagus consists entirely of squamous epithelium and lacks glandular tissue. Therefore, malignant transformation in this region almost exclusively results in Squamous Cell Carcinoma. Risk factors include smoking, alcohol consumption, and nutritional deficiencies (e.g., Plummer-Vinson Syndrome). * **Why Option A is Incorrect:** Adenocarcinoma typically arises from **Barrett’s esophagus** (metaplastic columnar epithelium), which occurs due to chronic GERD. Consequently, Adenocarcinoma is primarily found in the **lower one-third** of the esophagus. * **Why Option C is Incorrect:** The squamocolumnar junction (Z-line) is located at the gastroesophageal junction. While cancers can arise here, they are classified as junctional tumors (Siewert classification) and are not characteristic of the upper third. * **Why Option D is Incorrect:** Primary malignant melanoma of the esophagus is an extremely rare non-epithelial tumor, accounting for less than 0.2% of all esophageal malignancies. **High-Yield Clinical Pearls for NEET-PG:** * **Overall Most Common:** Globally, SCC is the most common esophageal cancer, though Adenocarcinoma is rising in Western countries. * **Most Common Site:** The **middle third** is the most common site for SCC; the **lower third** is the most common site for Adenocarcinoma. * **Lymphatic Spread:** The esophagus lacks a serosa, leading to early mediastinal spread. * **Investigation of Choice:** Upper GI Endoscopy with biopsy. * **Staging:** Endoscopic Ultrasound (EUS) is the most accurate for 'T' and 'N' staging.

Q: A 65-year-old woman with a known duodenal ulcer, being treated with H2 blocker therapy, is admitted with upper gastrointestinal bleeding. After blood replacement is initiated, what should be the next step in her management?

Perform endoscopy and coagulate the bleeding vessel. **Explanation:** The management of acute upper gastrointestinal bleeding (UGIB) follows a standardized protocol: **Resuscitation followed by Early Endoscopy.** 1. **Why Option C is Correct:** In a hemodynamically stabilized patient (post-blood replacement), **Upper GI Endoscopy** is the gold standard for both diagnosis and therapy. It allows for the identification of the bleeding source and immediate intervention. Endoscopic therapeutic modalities (e.g., thermal coagulation, hemoclips, or epinephrine injection) are highly effective in achieving primary hemostasis and significantly reduce the need for emergency surgery and the risk of rebleeding. 2. **Why Other Options are Incorrect:** * **Option A:** While *H. pylori* eradication is crucial for long-term ulcer healing, it is not an emergency intervention for active hemorrhage. * **Option B:** Gastric lavage may help clear the field for endoscopy but does not stop the bleeding. It is no longer routinely recommended as a primary therapeutic step. * **Option D:** Surgical intervention (pyloroduodenotomy and oversewing) is reserved for patients who fail endoscopic therapy, have massive refractory bleeding, or are hemodynamically unstable despite aggressive resuscitation. **High-Yield NEET-PG Pearls:** * **Rockall Score & Glasgow-Blatchford Score:** Used to assess the severity and prognosis of UGIB. * **Forrest Classification:** Used endoscopically to grade peptic ulcers based on the risk of rebleeding (Forrest Ia/Ib and IIa require mandatory endoscopic therapy). * **Drug of Choice:** Intravenous Proton Pump Inhibitors (PPIs) are started immediately to stabilize the clot by maintaining a gastric pH > 6. * **Most common cause of UGIB:** Peptic Ulcer Disease (specifically Duodenal Ulcers).

Question 1

A gastric ulcer located 3 cm from the pylorus and associated with duodenal ulcers is classified as which type?

Accepted Answer

Type 3

Answer

Type 1

Answer

Type 2

Answer

Type 4

Question 2

A 70-year-old male presents to the emergency department with acute bowel obstruction secondary to a descending colon malignancy. What is the management of choice?

Accepted Answer

Hartmann's procedure

Answer

Defunctioning colostomy

Answer

Total colectomy

Answer

Abdominoperineal resection

Question 3

Dumping syndrome occurs due to which of the following mechanisms?

Accepted Answer

Presence of hypertonic content in the small intestine

Answer

Diarrhea

Answer

Vagotomy

Answer

Reduced gastric capacity

Question 4

Seton's procedure is a treatment for which of the following conditions?

Accepted Answer

Fistula in ano

Answer

Hemorrhoids

Answer

Fissure in ano

Answer

Pilonidal sinus

Question 5

Which vessel needs to be ligated in a patient with a bleeding peptic ulcer?

Accepted Answer

Gastroduodenal artery

Answer

Superior pancreatico-duodenal artery

Answer

Left gastric artery

Answer

Left gastroepiploic artery

Question 6

What is the most common site of esophageal cancer?

Accepted Answer

Lower third

Answer

Middle third

Answer

Upper third

Answer

Lower end of the esophagus

Question 7

A 40-year-old patient, a known case of cirrhosis, develops an acute episode of gastrointestinal bleed. Initial therapy was given for 6 hours. Which of the following procedures is most useful?

Accepted Answer

Urgent endoscopy

Answer

Nasogastric aspiration

Answer

Sedation

Answer

Ultrasound

Question 8

What is the most common carcinoma of the upper one-third of the esophagus?

Accepted Answer

Squamous cell carcinoma

Answer

Adenocarcinoma

Answer

Squamocolumnar junction carcinoma

Answer

Melanoma

Question 9

A 65-year-old woman with a known duodenal ulcer, being treated with H2 blocker therapy, is admitted with upper gastrointestinal bleeding. After blood replacement is initiated, what should be the next step in her management?

Accepted Answer

Perform endoscopy and coagulate the bleeding vessel

Answer

Institute anti-H. pylori treatment

Answer

Perform repeated gastric lavage

Answer

Perform pyloroduodenotomy and oversew the bleeding vessel

Question 10

A frail elderly patient is found to have an anterior perforation of a duodenal ulcer. He has a recent history of nonsteroidal anti-inflammatory drug (NSAID) use and no previous history of peptic ulcer disease. A large amount of bilious fluid is found in the abdomen. What should be the next step?

Accepted Answer

Lavage and omental patch closure of the ulcer

Answer

Lavage of the peritoneal cavity alone

Answer

Total gastrectomy

Answer

Lavage, vagotomy, and gastroenterostomy

Gastrointestinal Surgery — MCQs

Gastrointestinal Surgery — MCQs

On this page

Practice by Chapter

Want unlimited practice?