Gastrointestinal Surgery Practice Questions

Q: All of the following indicate early gastric cancer except?

Involvement of mucosa, submucosa and muscularis. ### Explanation **Concept:** Early Gastric Cancer (EGC) is defined strictly by the **depth of invasion**, not by the presence of lymph node metastasis or the size of the tumor. According to the Japanese Society of Gastroenterological Endoscopy, EGC is a carcinoma limited to the **mucosa (T1a)** or **submucosa (T1b)**, regardless of lymph node status. **Why Option C is the Correct Answer:** Involvement of the **muscularis propria** (T2) automatically classifies the tumor as **Advanced Gastric Cancer**. Once the tumor penetrates beyond the submucosa into the muscular layer, it no longer meets the criteria for "early" cancer, even if it is small in size. **Analysis of Other Options:** * **Option A & B:** These are the classic definitions of EGC. The tumor is confined to the innermost layers (mucosa and submucosa). * **Option D:** This is a common "trap" in NEET-PG. By definition, EGC **can** have lymph node involvement (approximately 10-20% of cases). The presence of regional lymph node metastasis does not change the "Early" designation as long as the primary tumor is limited to the mucosa or submucosa. **High-Yield Clinical Pearls for NEET-PG:** * **Prognosis:** EGC has an excellent 5-year survival rate (>90%). * **Japanese Classification (Morphology):** * Type I: Protruded * Type II: Superficial (IIa: Elevated, IIb: Flat, IIc: Depressed) * Type III: Excavated (Most common type associated with ulceration) * **Treatment:** Endoscopic Submucosal Dissection (ESD) or Endoscopic Mucosal Resection (EMR) is indicated for T1a lesions with favorable histology. * **Most Common Site:** The lesser curvature of the antrum is the most frequent site for EGC.

Q: Operability in carcinoma of the stomach is indicated by all except?

Krukenberg tumour. **Explanation:** In the management of gastric carcinoma, "operability" refers to whether the primary tumor and its associated lymphatic spread can be removed with curative intent (R0 resection). **Why Krukenberg Tumour is the correct answer:** A **Krukenberg tumour** represents metastatic spread to the ovaries, typically via transcoelomic (peritoneal) seeding or retrograde lymphatic spread. This signifies **Stage IV (metastatic) disease**. In gastric cancer, the presence of distant metastases (including the pouch of Douglas, Virchow’s node, or Krukenberg tumours) renders the disease **inoperable for cure**. Surgery in such cases is restricted to palliative measures only. **Analysis of Incorrect Options:** * **A. Involvement of omental nodes:** These are considered regional lymph nodes (N1/N2). They are routinely removed during a standard D1 or D2 gastrectomy and do not preclude curative surgery. * **B. Involvement of lymph nodes at the celiac axis:** These are Station 9 nodes. In a **D2 gastrectomy**, which is the standard of care for operable gastric cancer, these nodes are resected. While they indicate advanced local disease, they do not signify systemic metastasis. * **C. Lymph node at porta hepatis:** These are Station 12 nodes. While technically challenging, they are considered regional nodes in certain classifications and can be removed during an extended D2 or D3 dissection. **Clinical Pearls for NEET-PG:** * **Resectability vs. Operability:** Resectability refers to the technical ability to remove the tumor; Operability refers to the patient's fitness and the oncological benefit of the procedure. * **Sister Mary Joseph’s Nodule:** Periumbilical metastasis; indicates inoperability. * **Blumer’s Shelf:** Palpable mass in the rectovesical or recto-uterine pouch; indicates inoperability. * **Standard of Care:** D2 Gastrectomy is the recommended surgical procedure for resectable gastric cancer.

Q: What is the least common complication of peptic ulcer?

Gastric Outlet Obstruction. ### Explanation In the context of peptic ulcer disease (PUD), complications are categorized by their frequency and clinical presentation. **1. Why Gastric Outlet Obstruction (GOO) is the correct answer:** Gastric Outlet Obstruction is the **least common** complication of peptic ulcer disease. It occurs in approximately 2–5% of cases. It is typically a result of chronic duodenal ulcers causing cicatrization (scarring) and fibrosis of the pyloric canal, or acute inflammation and edema. With the advent of Proton Pump Inhibitors (PPIs) and *H. pylori* eradication therapy, the incidence of GOO has significantly declined compared to other complications. **2. Analysis of Incorrect Options:** * **Bleeding (Option B):** This is the **most common** complication of peptic ulcer disease. It occurs due to the erosion of a blood vessel (most commonly the gastroduodenal artery in posterior duodenal ulcers). * **Perforation (Option C):** This is the **second most common** complication. It is an acute surgical emergency, typically involving the anterior wall of the duodenum. * **Epigastric Pain (Option D):** This is the most common **symptom/clinical presentation** of a peptic ulcer, rather than a complication. However, in the context of "complications," it is frequently present but does not rank as the "least common" pathological sequela. **Clinical Pearls for NEET-PG:** * **Most common complication:** Bleeding. * **Most common site of perforation:** Anterior wall of the first part of the duodenum. * **Most common artery involved in bleeding:** Gastroduodenal artery (posterior duodenal ulcer). * **Metabolic abnormality in GOO:** Hypochloremic, hypokalemic, metabolic alkalosis with **paradoxical aciduria**. * **Investigation of choice for GOO:** Upper GI Endoscopy (to rule out malignancy).

Q: Which of the following is a true statement about pelvic abscess?

A pelvic abscess may spontaneously drain via the rectum.. **Explanation:** **1. Why Option C is correct:** A pelvic abscess is a localized collection of pus in the most dependent part of the peritoneal cavity (the Pouch of Douglas in females or the rectovesical pouch in males). Due to its anatomical proximity to the rectum, the increasing pressure within the abscess can cause the wall to thin and eventually perforate into the rectal lumen. This results in **spontaneous drainage**, often characterized by the patient experiencing a sudden discharge of pus and mucus per rectum, followed by a relief of symptoms (diarrhea and tenesmus). **2. Why the other options are incorrect:** * **Option A:** Pelvic abscess is actually the **most common** site for an intra-peritoneal abscess because gravity causes infected peritoneal fluid (from appendicitis, diverticulitis, or PID) to track down into the pelvis. * **Option B:** Pyothorax (pus in the pleural cavity) is typically associated with **subphrenic abscesses** (via lymphatic spread or direct diaphragmatic involvement), not pelvic abscesses. * **Option D:** While CT is the gold standard for diagnosis, a **full bladder** can actually obscure pelvic anatomy or be mistaken for a fluid collection. For optimal imaging, the bladder should be emptied, or oral/rectal contrast should be used to differentiate bowel loops from the abscess. **High-Yield Clinical Pearls for NEET-PG:** * **Clinical Triad:** Fever, pelvic pain, and **"mucus diarrhea"** (due to rectal irritation). * **Diagnosis:** Digital Rectal Examination (DRE) is the most important bedside test, revealing a **boggy, tender swelling** on the anterior rectal wall. * **Treatment:** If it doesn't drain spontaneously, surgical drainage is performed via the site of maximal softening (**Proctotomy** in males/females or **Posterior Colpotomy** in females).

Q: About 6-8 hours after peptic perforation, the disappearance of abdominal wall rigidity is primarily due to which of the following?

Dilution of acid in the peritoneal cavity. **Explanation:** The clinical presentation of a perforated peptic ulcer typically follows three distinct stages: the stage of perforation (prostration), the stage of reaction (illusion), and the stage of generalized peritonitis. **Why Option C is correct:** When a peptic ulcer perforates, highly acidic gastric juice (pH < 2) enters the peritoneal cavity, causing immediate and intense **chemical peritonitis**. This results in the classic "board-like" abdominal rigidity. After approximately 6–12 hours, the body’s inflammatory response causes an influx of **peritoneal exudate** (serous fluid). This fluid **dilutes the gastric acid**, reducing its irritant effect on the peritoneum. Consequently, the abdominal pain and rigidity may temporarily diminish, leading to a "period of illusion" where the patient appears to improve clinically before progressing to bacterial peritonitis. **Why other options are incorrect:** * **A & B:** While acid secretion may decrease due to physiological stress and the patient may recover from initial neurogenic shock, these are secondary effects and do not explain the localized resolution of peritoneal irritation. * **D:** The reflex arc (muscle guarding) does not "fatigue." Rigidity only disappears if the stimulus (acid) is neutralized/diluted or if the patient reaches a state of end-stage septic shock with muscle flaccidity. **Clinical Pearls for NEET-PG:** * **Stage of Illusion:** This is a dangerous diagnostic trap where the patient feels better, but the underlying pathology is worsening. * **Gas under diaphragm:** Seen in ~70-80% of cases on an upright X-ray. * **Treatment of Choice:** Emergency laparotomy and **Graham’s Omental Patch** repair. * **Most common site:** Anterior wall of the first part of the duodenum (D1).

Q: Which is the most hemorrhagic tumor?

Leiomyosarcoma of the stomach. **Explanation:** **Leiomyosarcoma of the stomach** is the correct answer because it is a mesenchymal tumor characterized by high vascularity and a tendency for central necrosis. As the tumor grows, it often outstrips its blood supply, leading to central liquefaction and the formation of a "cavitated" lesion. When this cavity erodes into the gastric lumen, it results in massive, life-threatening upper gastrointestinal hemorrhage. Clinically, these patients often present with hematemesis or melena rather than the chronic occult blood loss typically seen in epithelial malignancies. **Why the other options are incorrect:** * **Carcinoma of the stomach (Adenocarcinoma):** While this is the most common gastric malignancy, it typically presents with chronic, low-grade bleeding (occult blood) leading to iron deficiency anemia, rather than acute massive hemorrhage. * **Adenocarcinoma of the gallbladder:** This tumor usually presents with jaundice, weight loss, or pain. While it can cause hemobilia in rare advanced stages, it is not primarily known for being highly hemorrhagic. * **Carcinoma of the pancreas:** This typically presents with obstructive jaundice (head of pancreas) or vague abdominal pain. Bleeding is rare unless there is secondary involvement of the duodenum or splenic vein thrombosis leading to gastric varices. **High-Yield Clinical Pearls for NEET-PG:** * **Most common site for Leiomyosarcoma in GI tract:** Stomach. * **Radiological Sign:** A "Torr-like" or large exophytic mass with central cavitation on CT is highly suggestive of a mesenchymal tumor (GIST or Leiomyosarcoma). * **GIST vs. Leiomyosarcoma:** Most tumors previously labeled as leiomyosarcomas are now classified as **Gastrointestinal Stromal Tumors (GIST)**, which are CD117 (c-kit) positive. Both are notorious for presenting with significant GI bleeding. * **Most common presentation of Gastric Leiomyosarcoma:** Hematemesis/Melena.

Q: Massive colonic bleeding in a patient of diverticulosis is from which artery?

Superior mesenteric artery. **Explanation:** The correct answer is **Superior Mesenteric Artery (SMA)**. While diverticula are more common in the left colon (sigmoid colon), **diverticular bleeding** most frequently originates from the **right colon** (approximately 50-90% of cases). The right colon, extending from the cecum to the proximal two-thirds of the transverse colon, is supplied by the branches of the Superior Mesenteric Artery (ileocolic and right colic arteries). The underlying pathophysiology involves the vasa recta (nutrient arteries) being stretched over the dome of the diverticulum. Over time, chronic injury and eccentric thickening of the intima lead to arterial rupture into the colonic lumen, causing painless, massive hematochezia. **Analysis of Incorrect Options:** * **Inferior Mesenteric Artery (IMA):** Supplies the left colon (descending and sigmoid). While diverticulitis is more common here, massive bleeding is statistically more likely to occur from right-sided diverticula. * **Coeliac Artery:** Supplies the foregut (esophagus to the second part of the duodenum). It is not involved in colonic pathology. * **Gastro-duodenal Artery:** A branch of the common hepatic artery; it is the most common source of massive upper GI bleeding (e.g., posterior duodenal ulcers) but does not supply the colon. **High-Yield Clinical Pearls for NEET-PG:** * **Most common cause** of massive lower GI bleeding in the elderly: Diverticulosis. * **Most common site** for diverticula: Sigmoid colon (Left side). * **Most common site** for diverticular *bleeding*: Right colon (SMA territory). * **Initial Management:** Resuscitation followed by Colonoscopy (diagnostic and therapeutic). * **Gold standard for localization** (if bleeding is active): Angiography (requires bleeding rate >0.5 ml/min).

Q: According to the Forrest classification, what stage is indicated by a visible clot at the ulcer base?

2B. The **Forrest Classification** is a standardized endoscopic grading system used to assess the risk of re-bleeding in peptic ulcer disease. It is a high-yield topic for NEET-PG as it dictates management strategies. ### **Explanation of the Correct Answer** **Option C (2B)** is correct because a **visible adherent clot** at the ulcer base is classified as Forrest Grade 2B. This indicates a recent hemorrhage where the clot is firmly attached to the ulcer bed and cannot be dislodged by gentle suction or water irrigation. The risk of re-bleeding for Grade 2B is approximately 20-30%. ### **Analysis of Incorrect Options** * **Option A (1A):** Represents **Active Spurt** (Arterial bleeding). This is an emergency with the highest risk of re-bleeding (up to 90%). * **Option B (2A):** Represents a **Non-bleeding Visible Vessel**. This indicates a high risk of re-bleeding (approx. 50%) and requires endoscopic intervention. * **Option D (3):** Represents a **Clean Ulcer Base** without any signs of recent hemorrhage. It has the lowest risk of re-bleeding (<5%) and can usually be managed with oral PPIs. ### **Clinical Pearls for NEET-PG** * **Grade 1 (Active):** 1A (Spurting), 1B (Oozing). * **Grade 2 (Recent):** 2A (Visible vessel), 2B (Adherent clot), 2C (Hematin-plugged/Black base). * **Grade 3 (Healing):** Clean base. * **Management:** Grades **1A, 1B, and 2A** always require endoscopic therapy (e.g., clipping, thermal, or injection). Grade **2B** management is controversial but often involves clot removal to treat the underlying vessel. Grades **2C and 3** generally do not require endoscopic intervention.

Question 1

All of the following indicate early gastric cancer except?

Accepted Answer

Involvement of mucosa, submucosa and muscularis

Answer

Involvement of mucosa

Answer

Involvement of mucosa and submucosa

Answer

Involvement of mucosa, submucosa and adjacent lymph nodes

Question 2

Operability in carcinoma of the stomach is indicated by all except?

Accepted Answer

Krukenberg tumour

Answer

Involvement of omental nodes

Answer

Involvement of lymph nodes at the celiac axis

Answer

Lymph node at porta hepatis

Question 3

What is the least common complication of peptic ulcer?

Accepted Answer

Gastric Outlet Obstruction

Answer

Bleeding

Answer

Perforation

Answer

Epigastric Pain

Question 4

What is true regarding a subphrenic abscess?

Accepted Answer

It is most commonly seen following biliary tract surgery.

Answer

A subphrenic abscess is most common following stomach surgery.

Answer

As the subphrenic space is surrounded by the falciform ligament and other hepatic ligament anteriorly, the subphrenic space is best approached through the bed and 12th rib.

Answer

It occurs most commonly following hepatic abscess rupture.

Question 5

Which of the following is a true statement about pelvic abscess?

Accepted Answer

A pelvic abscess may spontaneously drain via the rectum.

Answer

A pelvic abscess is an uncommon cause of an intra-peritoneal abscess.

Answer

A pelvic abscess is associated with pyothorax.

Answer

A pelvic abscess can be identified by CT scan if the bladder is full.

Question 6

About 6-8 hours after peptic perforation, the disappearance of abdominal wall rigidity is primarily due to which of the following?

Accepted Answer

Dilution of acid in the peritoneal cavity

Answer

Cessation of acid secretion in the stomach

Answer

Revival from initial shock

Answer

Fatigue of the reflex arc

Question 7

A postoperative patient presents with peritonitis and massive contamination due to a duodenal leak. What is the management of choice?

Accepted Answer

Total parenteral nutrition

Answer

Four quadrant peritoneal lavage

Answer

Duodenojejunostomy

Answer

Duodenostomy with feeding jejunostomy

Question 8

Which is the most hemorrhagic tumor?

Accepted Answer

Leiomyosarcoma of the stomach

Answer

Carcinoma of the stomach

Answer

Adenocarcinoma of the gallbladder

Answer

Carcinoma of the pancreas

Question 9

Massive colonic bleeding in a patient of diverticulosis is from which artery?

Accepted Answer

Superior mesenteric artery

Answer

Inferior mesenteric artery

Answer

Coeliac artery

Answer

Gastro-duodenal artery

Question 10

According to the Forrest classification, what stage is indicated by a visible clot at the ulcer base?

Accepted Answer

2B

Answer

1A

Answer

2A

Answer

3

Gastrointestinal Surgery — MCQs

Gastrointestinal Surgery — MCQs

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