Gastrointestinal Surgery Practice Questions

Q: All of the following signs are seen in acute appendicitis except?

Rovsing's sign. **Explanation:** In the context of this question, there appears to be a discrepancy in the provided key. **Rovsing’s sign** is a classic sign of acute appendicitis. However, if the question asks which sign is **NOT** seen in appendicitis, the correct answer should typically be **Murphy’s sign** or **Boa’s sign**, as these are associated with gallbladder disease. Let’s clarify the clinical signs: 1. **Rovsing’s Sign (Seen in Appendicitis):** This is positive when palpation of the Left Lower Quadrant (LLQ) causes pain in the Right Lower Quadrant (RLQ). It occurs because pressure on the left displaces gas toward the cecum, irritating the inflamed peritoneum. 2. **Murphy’s Sign (Not in Appendicitis):** This is the hallmark of **Acute Cholecystitis**. It is positive when a patient catches their breath (inspiratory arrest) upon deep palpation of the right hypochondrium. 3. **Boa’s Sign (Not in Appendicitis):** This refers to hyperesthesia (increased sensitivity) below the right scapula, also characteristic of **Acute Cholecystitis** due to phrenic nerve irritation. 4. **Macewen’s Sign (Mack Wen's):** While traditionally a sign of hydrocephalus (cracked-pot sound on percussion), in some surgical contexts, "MacBurney’s point tenderness" is the intended high-yield association for appendicitis. **Clinical Pearls for NEET-PG:** * **Psoas Sign:** Pain on hip extension (suggests retrocecal appendix). * **Obturator Sign:** Pain on internal rotation of the flexed right hip (suggests pelvic appendix). * **Sherren’s Triangle:** An area of hyperesthesia over the RLQ; if it disappears, it may signify appendix perforation. * **Aron’s Sign:** Epigastric pain on pressure over McBurney’s point.

Q: What complication commonly occurs in an anterior duodenal ulcer?

Perforation. **Explanation:** The location of a duodenal ulcer significantly dictates its clinical presentation and complications. The correct answer is **Perforation** because the anterior wall of the first part of the duodenum is not protected by any solid organ or major vessel [1]. It is covered only by the peritoneum, making it the most common site for free intraperitoneal perforation [1]. **Analysis of Options:** * **Perforation (Correct):** Anterior ulcers are prone to perforating into the general peritoneal cavity, leading to sudden-onset chemical peritonitis and the classic "gas under the diaphragm" on X-ray [1]. * **Bleeding:** This is the most common complication of **posterior** duodenal ulcers. The gastroduodenal artery (GDA) runs directly behind the first part of the duodenum; erosion into this vessel leads to massive hematemesis or melena [1]. * **Penetration:** This also occurs primarily in **posterior** ulcers. Instead of perforating into a free space, the ulcer erodes into adjacent solid organs, most commonly the **pancreas**, often presenting as referred back pain. * **Stricture formation:** While chronic scarring can lead to Gastric Outflow Obstruction (GOO), it is a late complication of chronic cicatrization rather than an acute event specific to the anterior wall [2]. **NEET-PG High-Yield Pearls:** * **Most common site of Peptic Ulcer:** First part of the Duodenum (D1) [2]. * **Anterior Ulcer = Perforation** (Think: "A" for Anterior and "A"ir under diaphragm) [1]. * **Posterior Ulcer = Bleeding** (Think: "P" for Posterior and "P"umping blood from GDA) [1]. * **Most common vessel involved in bleeding DU:** Gastroduodenal Artery [1]. * **Initial Investigation of choice for Perforation:** Erect X-ray Abdomen (showing pneumoperitoneum) [1].

Q: Hamman's sign is seen in which of the following conditions?

Esophageal perforation. **Explanation:** **Hamman’s sign** (also known as Hammond’s crunch) is a clinical finding characterized by a **crunching, rasping sound** synchronous with the heartbeat, heard best over the precordium. It is caused by **pneumomediastinum** (air in the mediastinal cavity). 1. **Why Esophageal Perforation is Correct:** In conditions like **Boerhaave syndrome** (effort rupture of the esophagus), air escapes from the esophagus into the mediastinum. As the heart beats, it compresses this trapped air against the mediastinal pleura and parietal pericardium, creating the characteristic "crunching" sound. This is a classic diagnostic sign for esophageal perforation. 2. **Why Other Options are Incorrect:** * **Achalasia Cardia:** This is a motility disorder characterized by the failure of the Lower Esophageal Sphincter (LES) to relax. While it causes esophageal dilation (mega-esophagus), it does not typically involve air escaping into the mediastinum unless a complication like instrumental perforation occurs. * **Diffuse Esophageal Spasm (DES):** This is a hypermotility disorder presenting with "corkscrew esophagus" and chest pain. It does not involve structural rupture or pneumomediastinum. * **Carcinoma Esophagus:** While it can cause obstruction or fistula formation, the primary presentation is progressive dysphagia and weight loss. Hamman’s sign is not a feature of malignancy unless it leads to an acute perforation. **High-Yield Clinical Pearls for NEET-PG:** * **Mackler’s Triad:** Associated with Boerhaave syndrome; consists of vomiting, chest pain, and subcutaneous emphysema. * **Diagnosis:** The investigation of choice for suspected perforation is a **Gastrografin (water-soluble contrast) swallow**. * **Differential:** Hamman’s sign can also be seen in tension pneumothorax or following thoracic trauma.

Q: A 23-year-old pregnant woman at 28 weeks gestation presents with right-sided abdominal pain, leukocytosis, and an abdominal ultrasound that does not visualize the appendix. What intervention would you recommend?

Abdominal magnetic resonance imaging (MRI) scan.. **Explanation:** The clinical presentation is highly suggestive of **acute appendicitis**, which is the most common non-obstetric surgical emergency during pregnancy. **Why MRI is the correct choice:** In a pregnant patient, the initial investigation of choice is **Ultrasonography (USG)**. However, USG has low sensitivity in later trimesters because the gravid uterus displaces the appendix superiorly and laterally. When USG is inconclusive (as in this case), **Magnetic Resonance Imaging (MRI) without gadolinium** is the preferred second-line investigation. MRI has high sensitivity and specificity for appendicitis and, crucially, avoids the risks of ionizing radiation to the fetus. **Why other options are incorrect:** * **Abdominal CT scan:** While highly accurate, CT involves ionizing radiation. It is generally reserved as a last resort if MRI is unavailable, as fetal radiation exposure should be minimized. * **Exploratory laparoscopy:** Surgery is indicated once a diagnosis is made. Proceeding directly to surgery without definitive imaging (when USG is negative) increases the risk of a "negative appendectomy," which is associated with a higher risk of fetal loss. * **Serial clinical observations:** Delaying diagnosis in pregnancy increases the risk of appendiceal perforation, which significantly raises the rate of fetal mortality (up to 20-30%). **Clinical Pearls for NEET-PG:** * **Displacement:** The appendix is displaced **upward and outward** toward the right upper quadrant as pregnancy progresses (Alder's sign). * **Most common symptom:** Right lower quadrant pain remains the most common symptom, regardless of the trimester. * **Surgery:** If surgery is required, **Laparoscopy** is considered safe in all trimesters, though care must be taken with trocar placement to avoid the gravid uterus.

Q: Which is the most reliable diagnostic method for staging esophageal cancer?

Endoscopic ultrasound. **Explanation:** Staging of esophageal cancer follows the TNM classification, and the choice of investigation depends on which component (T, N, or M) is being evaluated. **Why Endoscopic Ultrasound (EUS) is the Correct Answer:** EUS is considered the **gold standard and most reliable method for T (Tumor) and N (Nodal) staging**. Because the ultrasound probe is placed directly against the esophageal wall, it provides high-resolution images of the distinct anatomical layers (mucosa, submucosa, muscularis propria, and adventitia). This allows for precise determination of the depth of tumor invasion (T-stage) and the evaluation of regional lymph nodes (N-stage). It also facilitates Fine Needle Aspiration (FNA) of suspicious nodes. **Analysis of Incorrect Options:** * **CT Scan (Option C):** While CT is the **initial investigation of choice** for staging, it is best for detecting distant metastasis (M-stage), such as liver or lung involvement. It is poor at differentiating the specific layers of the esophageal wall. * **MRI (Option A):** MRI offers no significant advantage over CT or EUS for local staging and is not routinely used due to motion artifacts from breathing and heartbeat. * **Thoracoscopy (Option D):** Although highly accurate for nodal staging, it is an invasive surgical procedure and is not the primary diagnostic modality when non-invasive or minimally invasive options like EUS are available. **High-Yield Clinical Pearls for NEET-PG:** * **Best for T and N staging:** EUS. * **Best for M staging (Distant Metastasis):** PET-CT (most sensitive) or Contrast-Enhanced CT (CECT). * **Initial investigation for dysphagia:** Barium swallow (shows "rat-tail" appearance). * **Definitive diagnosis:** Endoscopic biopsy. * **Early Esophageal Cancer:** Defined as involvement of the mucosa or submucosa (T1) regardless of lymph node status.

Q: What is the most common type of hiatus hernia?

Sliding. **Explanation:** **1. Why Sliding (Type I) is the Correct Answer:** A sliding hiatus hernia is the most common type, accounting for approximately **90–95%** of all hiatus hernia cases. In this type, the **gastroesophageal (GE) junction** and the cardia of the stomach "slide" upward into the posterior mediastinum through the esophageal hiatus of the diaphragm. This occurs due to the laxity of the phrenoesophageal ligament. Clinically, it is most frequently associated with **Gastroesophageal Reflux Disease (GERD)** because the displacement of the GE junction compromises the lower esophageal sphincter (LES) mechanism. **2. Why Other Options are Incorrect:** * **Rolling (Type II):** Also known as a paraesophageal hernia. Here, the GE junction remains in its normal anatomical position, but the gastric fundus "rolls" up alongside the esophagus. It is much less common than the sliding type but carries a higher risk of strangulation and volvulus. * **Mixed (Type III):** This is a combination of both Type I and Type II, where both the GE junction and the fundus are displaced into the chest. * **Type IV:** (Often grouped with mixed) involves the herniation of other abdominal viscera (e.g., colon, spleen, or small bowel) into the chest. **3. NEET-PG High-Yield Pearls:** * **Most common symptom (Sliding):** Heartburn/Regurgitation (GERD). * **Most common symptom (Rolling):** Epigastric pain or fullness after meals; reflux is often absent. * **Investigation of choice:** Barium Swallow (most sensitive for anatomy) or Upper GI Endoscopy. * **Cameron Ulcers:** Linear mucosal erosions found in the gastric body at the level of the diaphragm in patients with large hiatus hernias; a known cause of iron deficiency anemia. * **Surgical Management:** Nissen Fundoplication (360° wrap) is the gold standard for symptomatic cases.

Question 1

A 36-year-old man presents with weight loss and a large palpable tumor in the upper abdomen. Endoscopy reveals an intact gastric mucosa without signs of carcinoma. Multiple biopsies show normal gastric mucosa. A UGI study shows a mass in the stomach. At surgery, a 3-kg mass is removed. The procedure requires the removal of the left side of the transverse colon. What is the most likely diagnosis?

Accepted Answer

Gastrointestinal stromal tumor (GIST)

Answer

Gastric cancer

Answer

Choledochoduodenal fistula

Answer

Eosinophilic gastroenteritis

Question 2

All of the following signs are seen in acute appendicitis except?

Accepted Answer

Rovsing's sign

Answer

Murphy's sign

Answer

Boa's sign

Answer

Mack Wen's sign

Question 3

What complication commonly occurs in an anterior duodenal ulcer?

Accepted Answer

Perforation

Answer

Bleeding

Answer

Penetration

Answer

Stricture formation

Question 4

Which of the following statements about inflammatory bowel disease (IBD) is true?

Accepted Answer

Two percent of Crohn's disease cases undergo malignant changes.

Answer

Surgery is the first line of management.

Answer

Pouch operation is performed for fulminant ulcerative colitis.

Answer

Ulcerative colitis does not undergo malignant changes.

Question 5

Hamman's sign is seen in which of the following conditions?

Accepted Answer

Esophageal perforation

Answer

Achalasia Cardia

Answer

Diffuse Esophageal Spasm

Answer

Carcinoma Esophagus

Question 6

A 23-year-old pregnant woman at 28 weeks gestation presents with right-sided abdominal pain, leukocytosis, and an abdominal ultrasound that does not visualize the appendix. What intervention would you recommend?

Accepted Answer

Abdominal magnetic resonance imaging (MRI) scan.

Answer

Exploratory laparoscopy.

Answer

Abdominal CT scan.

Answer

Serial clinical observations.

Question 7

Which is the most reliable diagnostic method for staging esophageal cancer?

Accepted Answer

Endoscopic ultrasound

Answer

MRI

Answer

CT scan

Answer

Thoracoscopy

Question 8

Which of the following is NOT a precancerous condition for carcinoma of the esophagus?

Accepted Answer

Paterson-Brown-Kelly syndrome

Answer

Achalasia

Answer

Zenker's diverticulum

Answer

Ectodermal dysplasia

Question 9

What is the most common type of hiatus hernia?

Accepted Answer

Sliding

Answer

Rolling

Answer

Mixed

Answer

None

Question 10

A 30-year-old male patient presented with massive hematemesis. On upper GI endoscopy, a 3x2 cm ulcer was seen on the posterior aspect of the first part of the duodenum. A bleeding vessel was identified but could not be controlled endoscopically. The patient's pulse rate is 100/min, BP is 110/70 mmHg, and Hb is 10 g/dL after blood transfusion. What is the next step in management?

Accepted Answer

Duodenotomy, truncal vagotomy, ligation of bleeding vessels, and pyloroplasty

Answer

Pyloric gastrectomy including the bleeding segment

Answer

Duodenotomy, pyloroplasty, and truncal vagotomy

Answer

Intravenous pantoprazole

Gastrointestinal Surgery — MCQs

Gastrointestinal Surgery — MCQs

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