Gastrointestinal Surgery Practice Questions

Q: What is the sign of lymphatic spread in carcinoma of the stomach?

Troisier's sign. **Explanation:** In carcinoma of the stomach, lymphatic spread is the most common mode of metastasis. **Troisier’s sign** refers to the clinical finding of a palpable, hard, non-tender left supraclavicular lymph node (known as **Virchow’s node**). This occurs because the stomach's lymphatic drainage eventually reaches the thoracic duct, which joins the venous system at the left subclavian vein. Malignant cells can seed the nodes at this junction via retrograde flow. **Analysis of Options:** * **Troisier's sign (Correct):** Specifically denotes the presence of Virchow’s node, indicating advanced intra-abdominal malignancy (most commonly gastric cancer) spreading via the **lymphatic system**. * **Krukenberg’s tumour:** Represents **transcoelomic (peritoneal) spread** to the ovaries. It is characterized by bilateral ovarian enlargement with "signet-ring" cells. * **Sister Mary Joseph’s nodules:** Represents metastasis to the umbilicus. While it can involve lymphatics, it is primarily classified as **direct or transcoelomic spread** along the falciform ligament. * **Trousseau’s sign:** This is a **paraneoplastic syndrome** (migratory thrombophlebitis) associated with visceral malignancies (especially pancreatic and gastric cancer), but it is a hematological/coagulation phenomenon, not a sign of lymphatic spread. **High-Yield Clinical Pearls for NEET-PG:** * **Irish’s Node:** Metastasis to the left axillary lymph node. * **Blumer’s Shelf:** A palpable mass in the pouch of Douglas on rectal examination (transcoelomic spread). * **Staging:** The most important prognostic factor in gastric cancer is the number of positive regional lymph nodes (N stage). * **Investigation of choice:** Upper GI Endoscopy with biopsy. For staging, Contrast-Enhanced CT (CECT) is preferred.

Q: Following oesophagectomy, what is the best substitute for the oesophagus?

Stomach. **Explanation:** The **stomach** is the preferred and most commonly used conduit for esophageal reconstruction following esophagectomy. Its superiority is based on its **excellent intrinsic blood supply** (primarily via the right gastroepiploic artery), its robust mobility which allows it to reach as high as the neck for cervical anastomosis, and the requirement for only a **single anastomosis** (esophagogastrostomy). **Analysis of Options:** * **Stomach (Correct):** It is technically simpler to mobilize, has a reliable vascular pedicle, and demonstrates better long-term functional outcomes compared to other conduits. * **Colon (Left/Right):** The colon is considered the **second choice**. It is used when the stomach is unavailable (e.g., due to previous gastric surgery, corrosive injury, or tumor involvement). While it provides adequate length and is resistant to acid reflux, it requires three anastomoses, making the surgery more complex and increasing the risk of ischemia. * **Jejunum:** This is typically reserved for **short-segment replacements** or when both the stomach and colon are unavailable. Its use for long-segment reconstruction is limited by its complex mesenteric vascular anatomy, which often necessitates microvascular "supercharging" (free jejunal flap). **Clinical Pearls for NEET-PG:** * **Vascular Supply:** When using the stomach, the **Right Gastroepiploic Artery** is the primary vessel that must be preserved. * **Route of Choice:** The **posterior mediastinum** (the original esophageal bed) is the shortest and most physiological route for the conduit. * **Most Common Complication:** Anastomotic leak is a significant concern, but the stomach has the lowest rate of graft necrosis among the options.

Q: A 75-year-old woman with chronic atrial fibrillation presented to the hospital with a 2-day history of colicky abdominal pain. Physical examination revealed hypoactive bowel sounds and diffuse abdominal tenderness. Laboratory tests showed a white cell count of 19,400 per cubic millimeter with 92% neutrophils, a blood urea nitrogen level of 42 mg/dL, and a serum creatinine level of 3.0 mg/dL. What is the most probable diagnosis in this patient?

Mesenteric ischemia. **Explanation:** The clinical presentation is classic for **Acute Mesenteric Ischemia (AMI)**. The patient has a significant predisposing factor—**chronic atrial fibrillation**—which is the most common cause of mesenteric arterial embolism (usually affecting the Superior Mesenteric Artery). **Why Mesenteric Ischemia is Correct:** The hallmark of AMI is "pain out of proportion to physical findings." In an elderly patient with an embolic source (AFib), sudden onset colicky pain followed by leukocytosis and signs of metabolic stress (elevated BUN/Creatinine suggesting dehydration or prerenal azotemia) strongly points toward intestinal ischemia. As the bowel becomes gangrenous, tenderness becomes more diffuse and bowel sounds decrease. **Why Other Options are Incorrect:** * **Portal vein thrombosis:** Usually presents with features of portal hypertension (ascites, variceal bleeding) or vague abdominal pain, but is less likely to cause acute colicky pain and high leukocytosis in the absence of underlying cirrhosis or prothrombotic states. * **Intestinal perforation:** While a complication of ischemia, primary perforation usually presents with sudden, sharp pain and "board-like" rigidity (peritonitis) rather than a 2-day history of colicky pain. * **Lynch syndrome:** This is a hereditary non-polyposis colorectal cancer (HNPCC) syndrome. It presents with a family history of cancers (colon, endometrial) and is not an acute surgical emergency. **Clinical Pearls for NEET-PG:** * **Gold Standard Investigation:** CT Angiography (CTA) is the investigation of choice. * **Most Common Site:** Superior Mesenteric Artery (SMA) due to its narrow take-off angle from the aorta. * **Laboratory Marker:** Elevated **Serum Lactate** is a sensitive but late marker indicating bowel infarction. * **Classic Triad:** Postprandial pain, weight loss, and abdominal bruit (seen in *chronic* mesenteric ischemia).

Q: What is the investigation of choice for Zenker's diverticulum?

Barium swallow. ### Explanation **Zenker’s Diverticulum (ZD)** is a pulsion pseudodiverticulum occurring through **Killian’s dehiscence**, a weak area between the thyropharyngeus and cricopharyngeus muscles. **1. Why Barium Swallow is the Correct Answer:** Barium swallow is the **investigation of choice** because it provides a definitive diagnosis by visualizing the location, size, and shape of the pouch. It typically shows a posterior midline pouch at the level of the C5-C6 vertebrae. It is non-invasive and provides the necessary anatomical detail required for surgical planning without the risks associated with instrumentation. **2. Why Other Options are Incorrect:** * **Endoscopy:** This is generally **avoided or contraindicated** as the initial step. The endoscope can easily enter the diverticulum instead of the esophagus, leading to an accidental **perforation** of the thin-walled pouch. * **Esophageal Manometry:** While ZD is caused by incoordination of the upper esophageal sphincter, manometry is technically difficult to perform in these patients and is not required for diagnosis. * **CT Scan:** While it may show a fluid-filled sac, it is not the gold standard and lacks the functional/mucosal detail provided by barium studies. **3. High-Yield Clinical Pearls for NEET-PG:** * **Clinical Presentation:** Characterized by dysphagia, **halitosis** (foul breath due to undigested food), and **regurgitation** of undigested food. * **Boyce’s Sign:** A gurgling sound heard on the side of the neck when pressure is applied to the diverticulum. * **Treatment:** Small pouches may be treated with a cricopharyngeal myotomy; larger pouches require diverticulectomy or endoscopic stapling (Dohlman’s procedure). * **Complication:** The most common serious complication is aspiration pneumonia.

Q: What is the most common type of hernia in the young age group?

Indirect inguinal hernia. ### Explanation **Correct Answer: C. Indirect inguinal hernia** **Why it is correct:** The **Indirect Inguinal Hernia** is the most common type of hernia across **all age groups and both sexes**, but it is particularly predominant in the young. The underlying pathophysiology is a **congenital defect**: the failure of the **processus vaginalis** to obliterate. This creates a pre-formed sac that enters the inguinal canal through the deep inguinal ring, lateral to the inferior epigastric vessels. In infants and young adults, this is almost always the cause of a groin lump. **Why the other options are incorrect:** * **Femoral hernia:** While more common in females than males, it is rare in the young. It typically occurs in elderly females due to a wide femoral canal and increased intra-abdominal pressure. * **Direct inguinal hernia:** This is an **acquired** hernia caused by weakness in the posterior wall of the inguinal canal (Hesselbach’s triangle). It is primarily seen in the elderly due to age-related muscle atrophy and chronic strain. * **Umbilical hernia:** While common in neonates, most congenital umbilical hernias resolve spontaneously by age 2. They are less common than inguinal hernias in the overall "young age group" population. **NEET-PG High-Yield Pearls:** * **Most common hernia overall:** Indirect Inguinal Hernia. * **Most common hernia in females:** Indirect Inguinal Hernia (though femoral hernia is *more common in females than in males*, indirect is still the most frequent type in women). * **Anatomical Landmark:** Indirect hernias are **lateral** to the inferior epigastric artery; Direct hernias are **medial**. * **Internal Ring Test:** If the hernia is controlled by occluding the deep internal ring, it is an Indirect Inguinal Hernia.

Q: What is a mucocele of the appendix?

All of the above. **Explanation:** A **mucocele of the appendix** is a clinical descriptive term referring to the abnormal accumulation of mucus within the appendiceal lumen, causing progressive cystic dilatation. It is not a single pathological entity but rather a manifestation of several different underlying conditions. **Why "All of the above" is correct:** The term encompasses a spectrum of pathologies categorized by the cause of the obstruction and the nature of the epithelium: 1. **Retention Cyst (Option C):** This is a non-neoplastic mucocele caused by an obstruction of the appendiceal outflow (often by a fecalith), leading to mucus accumulation behind the blockage. The epithelium remains normal. 2. **Benign Tumors (Option A):** Mucinous cystadenomas are benign neoplastic growths where the epithelium undergoes villous hyperplasia, producing excessive mucus. 3. **Low-grade Malignancy (Option B):** This refers to **LAMN (Low-grade Appendiceal Mucinous Neoplasm)**. While it lacks the aggressive features of frank adenocarcinoma, it has the potential to rupture and cause **Pseudomyxoma Peritonei**, thus carrying malignant potential. **Clinical Pearls for NEET-PG:** * **Clinical Presentation:** Often asymptomatic (incidental finding) or presents like chronic appendicitis. A palpable mass in the Right Iliac Fossa (RIF) may be present. * **Radiological Sign:** On CT scan, it appears as a well-encapsulated cystic mass. The presence of **"onion skin"** appearance (layering of mucus) is highly suggestive. * **Surgical Management:** Extreme care must be taken during surgery (usually an appendectomy or cecectomy) to avoid **intraoperative rupture**. Spillage of the contents into the peritoneal cavity can lead to **Pseudomyxoma Peritonei** (the "Jelly Belly" syndrome). * **Association:** There is a known association between appendiceal mucoceles and **ovarian mucinous tumors**; hence, the ovaries should always be inspected.

Question 1

What is the sign of lymphatic spread in carcinoma of the stomach?

Accepted Answer

Troisier's sign

Answer

Krukenberg's tumour

Answer

Sister Mary Joseph's nodules

Answer

Trousseau's sign

Question 2

Following oesophagectomy, what is the best substitute for the oesophagus?

Accepted Answer

Stomach

Answer

Jejunum

Answer

Left colon

Answer

Right colon

Question 3

Which of the following statements about volvulus is false?

Accepted Answer

Lower GI endoscopy is contraindicated in sigmoid volvulus

Answer

More common in psychiatric patients

Answer

Sigmoid volvulus is more common than caecal volvulus

Answer

Volvulus of the caecum is managed by conservative methods

Question 4

Total gastrectomy is the only accepted treatment for which of the following conditions?

Accepted Answer

Cancer located in the proximal stomach

Answer

Cancer located in the distal stomach

Answer

Ulcerating lesion in the body of the stomach

Answer

Polyploidy lesion in the antrum of the stomach

Question 5

A 75-year-old woman with chronic atrial fibrillation presented to the hospital with a 2-day history of colicky abdominal pain. Physical examination revealed hypoactive bowel sounds and diffuse abdominal tenderness. Laboratory tests showed a white cell count of 19,400 per cubic millimeter with 92% neutrophils, a blood urea nitrogen level of 42 mg/dL, and a serum creatinine level of 3.0 mg/dL. What is the most probable diagnosis in this patient?

Accepted Answer

Mesenteric ischemia

Answer

Portal vein thrombosis

Answer

Intestinal perforation

Answer

Lynch syndrome

Question 6

A 35-year-old lady presented with retrosternal burning pain, epigastric pain, and regurgitation for 6 years. What is the most preferred treatment option?

Accepted Answer

Laparoscopic Nissen's fundoplication

Answer

Lifestyle modification

Answer

Standard dose PPI

Answer

Dietary modification

Question 7

A 72-year-old patient presents with an intractable type I ulcer along the incisura and significant scarring along the entire length of the lesser curvature. Select the appropriate surgical procedure for this patient.

Accepted Answer

Antrectomy alone

Answer

Vagotomy and antrectomy

Answer

Vagotomy and pyloroplasty

Answer

Vagotomy and gastrojejunostomy

Question 8

What is the investigation of choice for Zenker's diverticulum?

Accepted Answer

Barium swallow

Answer

Endoscopy

Answer

Esophageal manometry

Answer

CT scan

Question 9

What is the most common type of hernia in the young age group?

Accepted Answer

Indirect inguinal hernia

Answer

Femoral hernia

Answer

Direct inguinal hernia

Answer

Umbilical hernia

Question 10

What is a mucocele of the appendix?

Accepted Answer

All of the above

Answer

A benign tumor

Answer

A low-grade malignancy

Answer

A retention cyst

Gastrointestinal Surgery — MCQs

Gastrointestinal Surgery — MCQs

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