Gastrointestinal Surgery Practice Questions

Q: All of the following statements about gastrinomas are true EXCEPT:

About 10% of gastrinomas are malignant.. **Explanation:** Gastrinomas are gastrin-secreting neuroendocrine tumors that lead to **Zollinger-Ellison Syndrome (ZES)**. Understanding their malignancy potential and anatomical distribution is crucial for NEET-PG. **1. Why Option B is the Correct Answer (The False Statement):** Contrary to many other endocrine tumors, gastrinomas have a high malignant potential. Approximately **60-90% of gastrinomas are malignant**, not 10%. They are slow-growing but frequently metastasize to regional lymph nodes and the liver. The "Rule of 10s" often applies to Pheochromocytoma, but applying it to Gastrinomas is a common examiner trap. **2. Analysis of Other Options:** * **Option A:** Historically, the pancreas was thought to be the primary site. However, modern studies show that **50-70% of gastrinomas are found in the duodenum** (often small and multicentric), while 20-30% are in the pancreas. * **Option C:** The most common sites for metastasis are the **peripancreatic lymph nodes** and the **liver**. Liver metastasis is the most significant prognostic factor for survival. * **Option D:** Excessive gastrin leads to massive gastric acid hypersecretion. This causes refractory **peptic ulcers** (often in distal duodenum/jejunum) and **diarrhea** (due to mucosal damage and inactivation of pancreatic lipase by low pH). **Clinical Pearls for NEET-PG:** * **Gastrinoma Triangle (Passaro’s Triangle):** Boundaries are the junction of the cystic/common bile duct, the junction of the 2nd and 3rd parts of the duodenum, and the neck/body of the pancreas. Over 90% of gastrinomas are found here. * **Association:** 25% of cases are associated with **MEN-1 syndrome** (usually multiple tumors), while 75% are sporadic (usually solitary). * **Diagnosis:** Best initial test is **Fasting Serum Gastrin** (>1000 pg/mL is diagnostic). The most sensitive provocative test is the **Secretin Stimulation Test**.

Q: During splenectomy, at which level are the splenic vessels typically ligated?

At the superior border of the pancreas. The **splenic artery**, a major branch of the celiac trunk, follows a characteristic tortuous course along the **superior border of the pancreas**. During a splenectomy, the vessels are typically ligated at this level to ensure a safe and controlled procedure. **Why Option B is Correct:** The splenic artery runs within the lienorenal (splenorenal) ligament after passing along the upper margin of the pancreas. Ligating the vessels at the superior border of the pancreas allows for proximal control of blood flow. More importantly, it helps avoid accidental injury to the **tail of the pancreas**, which often extends into the lienorenal ligament and lies very close to the splenic hilum [1]. **Analysis of Incorrect Options:** * **Option A (Near the splenic hilum):** Ligating too close to the hilum increases the risk of damaging the pancreatic tail, which can lead to post-operative pancreatic fistulas or pancreatitis [1]. * **Option C (Inferior border of the pancreas):** This is anatomically incorrect; the splenic artery is related to the superior border, while the splenic vein lies posterior to the pancreas. * **Option D (Midway):** This is not a standard surgical landmark and does not offer the same anatomical safety as the superior pancreatic border. **NEET-PG High-Yield Pearls:** * **Lienorenal Ligament:** Contains the splenic vessels and the **tail of the pancreas** [1], [2]. * **Gastrosplenic Ligament:** Contains the **short gastric vessels** and left gastroepiploic vessels [1], [2]. * **Kehr’s Sign:** Referred pain to the left shoulder due to diaphragmatic irritation from a ruptured spleen (phrenic nerve, C3-C5). * **Segmental Anatomy:** The spleen has distinct vascular segments, allowing for partial splenectomy.

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: A patient presents with a painless lump in the umbilicus that reduces in size when lying down. What is the most likely diagnosis?

Umbilical hernia. ### Explanation **Correct Answer: A. Umbilical hernia** The clinical presentation of a **painless lump** at the umbilicus that **reduces in size when lying down** (reducibility) is the hallmark of a hernia. In adults, umbilical hernias are typically acquired due to increased intra-abdominal pressure (e.g., obesity, ascites, or pregnancy) causing protrusion of omentum or bowel through a weakened umbilical scar. The reduction in size upon lying down occurs because gravity and decreased intra-abdominal pressure allow the contents to return to the peritoneal cavity. **Why other options are incorrect:** * **B. Fistula in umbilicus:** This would typically present with persistent discharge (fecal if vitello-intestinal duct remnant, or urine if urachal remnant) rather than a reducible lump. * **C. Omphalitis:** This is an infection of the umbilical stump, seen primarily in neonates. It presents with signs of inflammation: redness, warmth, pain, and purulent discharge, not a reducible mass. * **D. Gastroschisis:** This is a congenital defect where abdominal viscera protrude through a full-thickness abdominal wall defect (usually to the right of the umbilicus). It is a neonatal emergency and is not "reducible" or "painless" in the clinical sense described. **NEET-PG High-Yield Pearls:** * **Adult vs. Pediatric:** Pediatric umbilical hernias often close spontaneously by age 2; adult umbilical hernias (often "paraumbilical") never resolve spontaneously and carry a higher risk of strangulation. * **Sister Mary Joseph’s Nodule:** A metastatic umbilical nodule (often from gastric or ovarian CA) that presents as a **hard, fixed** lump—important to differentiate from a soft, reducible hernia. * **Covering:** Unlike Omphalocele, Gastroschisis has **no** peritoneal covering/sac.

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: 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).

Q: Which type of hernia contains another viscus as its posterior wall?

Hernia en glissade. **Explanation:** **Hernia en glissade (Sliding Hernia)** is the correct answer. In this condition, a retroperitoneal organ (most commonly the **cecum** on the right or the **sigmoid colon** on the left) slides down such that it forms part of the posterior wall of the hernia sac. The visceral peritoneum covering the organ becomes continuous with the parietal peritoneum of the sac. This is clinically significant because accidental injury to the bowel can occur if the surgeon mistakes the viscus for the sac itself. **Analysis of Incorrect Options:** * **Richter Hernia:** Only a portion of the bowel wall (usually the antimesenteric border) is trapped within the hernia sac. It can lead to strangulation without causing complete intestinal obstruction. * **Maydl Hernia (Retrograde Hernia):** This involves a "W-shaped" loop of bowel where two loops are in the sac, but the intervening loop remains in the abdomen. The intra-abdominal loop is at the highest risk of strangulation. * **Spigelian Hernia:** An interstitial hernia occurring through the Spigelian fascia (aponeurosis of the transversus abdominis) at the level of the arcuate line. **High-Yield Clinical Pearls for NEET-PG:** * **Most common organ involved:** Bladder (especially in direct inguinal sliding hernias) or Sigmoid colon. * **Demographics:** Most common in elderly males with long-standing inguinal hernias. * **Surgical Note:** Never attempt a high ligation of the sac in a sliding hernia; instead, the sac should be replaced into the abdomen (Bevan’s technique). * **Littre’s Hernia:** A hernia containing a Meckel’s diverticulum. * **Amyand’s Hernia:** An inguinal hernia containing the appendix.

Question 1

All of the following statements about gastrinomas are true EXCEPT:

Accepted Answer

About 10% of gastrinomas are malignant.

Answer

Most gastrinomas (50-70%) are present in the duodenum.

Answer

Metastatic spread typically involves lymph nodes and the liver.

Answer

Gastrinomas can cause peptic ulcer disease and diarrhea.

Question 2

During splenectomy, at which level are the splenic vessels typically ligated?

Accepted Answer

At the superior border of the pancreas

Answer

Near the splenic hilum

Answer

At the inferior border of the pancreas

Answer

Midway between the hilum and the superior border of the pancreas

Question 3

An ulcero-proliferative lesion in the gastric antrum, 6 cm in diameter, invading the serosa, with 10 enlarged lymph nodes around the pylorus and no distant metastasis, what is the TNM staging?

Accepted Answer

T3 N2 M0

Answer

T2 N1 M0

Answer

T4 N1 M0

Answer

T1 N3 M0

Question 4

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 5

A patient presents with a painless lump in the umbilicus that reduces in size when lying down. What is the most likely diagnosis?

Accepted Answer

Umbilical hernia

Answer

Fistula in umbilicus

Answer

Omphalitis

Answer

Gastroschisis

Question 6

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 7

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 8

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

Question 9

Maximum dilatation of the esophagus occurs in which condition?

Accepted Answer

Achalasia cardia

Answer

Carcinoma at the gastroesophageal junction

Answer

Stricture at the lower end

Answer

CREST syndrome

Question 10

Which type of hernia contains another viscus as its posterior wall?

Accepted Answer

Hernia en glissade

Answer

Richter Hernia

Answer

Maydl Hernia

Answer

Spigelian hernia

Gastrointestinal Surgery — MCQs

Gastrointestinal Surgery — MCQs

On this page

Practice by Chapter

Want unlimited practice?