Gastrointestinal Surgery Practice Questions

Q: Among pathological lead points, the commonest cause of intussusception is -

Meckel's diverticulum. ***Meckel's diverticulum*** - Among **pathological lead points** specifically, **Meckel's diverticulum** is the most common cause of intussusception. - It is a true congenital diverticulum that can act as a lead point when it becomes inverted, inflamed, or has associated ectopic tissue or tumors. - While overall intussusception in children is mostly idiopathic, when a **pathological lesion** is identified, Meckel's diverticulum is the leading cause. - Seen in approximately 2% of the population, it follows the "rule of 2s" and is the most frequent anatomical abnormality causing pathological intussusception in pediatric patients. *Hypertrophy of submucous Peyer's patches* - **Peyer's patch hypertrophy** is the most common cause of intussusception **overall** in children (90% of cases), typically following viral infections. - However, this represents **idiopathic intussusception**, not a true pathological lead point, as no discrete anatomical lesion is identified. - The question specifically asks for pathological lead points, which excludes this idiopathic mechanism. *Submucous lipoma* - A **submucous lipoma** can serve as a pathological lead point for intussusception, but is much rarer. - More commonly seen in adults rather than children. - While it is a true pathological lesion, it is less frequent than Meckel's diverticulum as a lead point. *Polyp* - **Polyps** (adenomatous, hamartomatous, or inflammatory) can act as pathological lead points. - More common in adults and in specific syndromes (e.g., Peutz-Jeghers syndrome). - Less frequent than Meckel's diverticulum among pathological causes in the pediatric population.

Q: All of the following are surgical options in the management of esophageal carcinoma except -

Sistrunk operation. ***Sistrunk operation*** - The **Sistrunk operation** is a surgical procedure specifically designed for the removal of a **thyroglossal duct cyst**, not for esophageal carcinoma. - This procedure involves excising the cyst along with the central portion of the hyoid bone and the tract leading to the foramen cecum to prevent recurrence. *Ivor Lewis Approach* - The **Ivor Lewis approach** is a common and established surgical technique for **esophagectomy**, involving both abdominal and right thoracic incisions for tumor resection and reconstruction. - It is often used for tumors in the mid to distal esophagus. *Mckeown's Approach* - The **McKeown's approach** is another well-known surgical technique for **esophagectomy**, typically used for more proximal esophageal tumors. - This involves three incisions: abdominal, right thoracic, and cervical, allowing for extensive lymphadenectomy. *Transhiatal removal* - **Transhiatal esophagectomy** is a surgical option for esophageal cancer that involves abdominal and cervical incisions without a thoracic incision. - This approach is often favored in patients with significant comorbidities who may not tolerate a full thoracotomy.

Q: Where does spontaneous esophageal rupture (Boerhaave syndrome) most commonly occur?

Above the diaphragmatic aperture. ***Above the diaphragmatic aperture*** - Boerhaave syndrome, or spontaneous esophageal rupture, most commonly occurs in the **distal esophagus**, just above the diaphragmatic aperture. - This region is particularly susceptible due to increased **intraluminal pressure** during forceful vomiting, combined with a lack of muscular support and a thinner esophageal wall. - The rupture typically occurs in the **left posterolateral wall** of the lower third of the esophagus, approximately **2-5 cm above the gastroesophageal junction**. *Below the diaphragmatic aperture* - Ruptures below the diaphragmatic aperture are less common in Boerhaave syndrome, as the **lower esophageal sphincter** and surrounding diaphragmatic crura provide more support. - While other forms of esophageal injury can occur here, a spontaneous rupture due to vomiting is less typical in this location. *Pharyngoesophageal junction* - Ruptures at the pharyngoesophageal junction are known as **Zenker's diverticulum ruptures** or other types of perforation, typically not Boerhaave syndrome. - This area is prone to tears from instrumentation or foreign bodies but not usually from the extreme pressure of forceful vomiting (which affects the distal esophagus more). *At the crossing of the arch of aorta* - The mid-esophagus at the level of the aortic arch is not a common site for Boerhaave syndrome. - Although the esophagus is constricted here, the primary stress during forceful vomiting is concentrated in the **distal esophagus**.

Q: What is the commonest site of peptic ulcer?

First part of the duodenum. ***First part of the duodenum*** - The **duodenal bulb** (first part of the duodenum) is the most common location for peptic ulcers due to its proximity to the pylorus, where it's exposed to **acidic chyme** and susceptible to **H. pylori infection**. - The **mucosal defenses** in the duodenum are often less robust compared to the stomach, making it more vulnerable to acid-pepsin aggression. *Second part of the duodenum* - Ulcers in the **second part of the duodenum** are relatively rare compared to the first part. - This section receives bile and pancreatic secretions which help to **neutralize stomach acid**, providing greater protection. *Distal third of the stomach* - Ulcers in the **distal third of the stomach** are less common than in the first part of the duodenum. - While **gastric ulcers** do occur, they are more frequently found in the **antrum or lesser curvature** of the stomach. *Pylorus of the stomach* - Ulcers can occur in the **pylorus**, but they are not as frequent as those in the **duodenal bulb**. - Pyloric ulcers are considered a type of **gastric ulcer** and can be associated with gastric outlet obstruction.

Q: A 25 year old male is receiving conservative management for an appendicular mass since 3 days now presents with a rising pulse rate, tachycardia and fever. The mode of management must be -

Proceed to laparotomy and appendicectomy. ***Proceed to laparotomy and appendicectomy*** - A **rising pulse rate, tachycardia, and fever** indicate **worsening sepsis** or **perforation** of the appendicular mass, necessitating urgent surgical intervention. - Continuing conservative management in the face of these signs carries a high risk of **morbidity and mortality** from peritonitis or widespread sepsis. *Continue Ochsner Sherren regimen with close monitoring* - The Ochsner Sherren regimen is a **conservative approach** for a stable appendicular mass, which is no longer the case with signs of deterioration. - **Clinical worsening** (tachycardia, rising fever, increased pulse) signifies failure of conservative management and requires a shift to surgical intervention. *Continue conservative management* - Continuing conservative management despite **signs of deterioration** (rising pulse, tachycardia, fever) would lead to further progression of the disease and potential life-threatening complications. - These symptoms suggest that the infection is **not contained** and is likely spreading, indicating the need for immediate surgical treatment. *Intravenous antibiotics* - While intravenous antibiotics are part of the initial conservative management, they are **insufficient** alone for an appendicular mass showing signs of deterioration. - The worsening clinical picture suggests a **failed antibiotic response** or a more severe underlying issue (e.g., abscess rupture) that requires surgical drainage or removal.

Q: Which of the following is true about Mallory-Weiss tear -

It is a mucosal tear not extending through the muscle layer. ***It is a mucosal tear not extending through the muscle layer*** - A **Mallory-Weiss tear** is defined as a longitudinal tear in the **mucosa** of the distal esophagus or proximal stomach. - These tears typically do not extend through the **muscularis propria** layer, distinguishing them from a Boerhaave syndrome, which is a full-thickness rupture. *It is more common in women than men* - Mallory-Weiss tears show a **male predominance** with a male-to-female ratio of approximately 2-4:1. - Risk factors like **alcohol use disorder** and forceful vomiting are more common in males, contributing to this gender distribution. *It is common in young individuals* - Mallory-Weiss tears are more common in **middle-aged to older individuals**, typically between 40 and 60 years old. - The condition is rare in young children or teenagers. *It is associated with achalasia cardia* - While both conditions affect the esophagus, there is **no direct causal association** between Mallory-Weiss tears and **achalasia cardia**. - Achalasia is a motility disorder, whereas Mallory-Weiss tears are caused by sudden increases in intra-abdominal pressure.

Q: All of the following are true about Nissen Fundoplication except which of the following?

Reinforcement is done only in the posterior half. ***Reinforcement is done only in the posterior half*** - This statement is incorrect because the **Nissen fundoplication** typically involves a **360-degree wrap** of the gastric fundus around the lower esophagus. - A 360-degree wrap provides complete reinforcement to prevent reflux, unlike a partial wrap which might be used in other procedures but not a standard Nissen. *It is done for GERD* - **Nissen fundoplication** is a common surgical procedure performed to treat severe **Gastroesophageal Reflux Disease (GERD)** that is refractory to medical management. - The procedure aims to strengthen the **lower esophageal sphincter (LES)** and prevent the reflux of stomach contents into the esophagus. *Upper part of stomach is plicated around the lower esophagus* - Specifically, the **fundus** (upper part) of the stomach is wrapped around the distal esophagus to create a functional valve. - This wrap helps to reinforce the LES and prevent stomach acid from flowing back up into the esophagus. *It is done for paraesophageal hiatus hernia* - **Nissen fundoplication** is often performed concurrently with the repair of a **hiatal hernia**, especially a **paraesophageal hernia**, to anchor the stomach in its correct anatomical position and prevent recurrence. - Repair of the hernia alone may not be sufficient to prevent reflux, making the fundoplication an important additional step.

Q: Which of the following statements is MOST accurate regarding Zenker diverticulum?

It is a pulsion diverticulum. ***It is a pulsion diverticulum*** - A **Zenker diverticulum** is formed by the herniation of the **pharyngeal mucosa** through a weak point in the posterior pharyngeal wall, driven by increased intraluminal pressure (**pulsion**). - This contrasts with **traction diverticula**, which are caused by external pulling forces on the esophageal wall. *It is between superior and middle constrictor* - **Zenker diverticulum** occurs in **Killian's triangle**, a weak area between the **cricopharyngeus muscle** (part of the inferior constrictor) and the **thyropharyngeus muscle** (also part of the inferior constrictor). - The superior and middle constrictor muscles are located more superiorly in the pharynx, and diverticula in this region are rare. *It projects posteriorly* - Although it originates from the **posterior pharyngeal wall**, the **Zenker diverticulum** typically projects **left laterally** or **inferiorly** into the neck as it enlarges. - Its initial herniation is posterior, but subsequent growth and gravitational forces lead to its characteristic downward and often left-sided displacement. *It is commonly seen in older adults* - While it most commonly affects **older adults**, this statement describes an **epidemiological characteristic** rather than a fundamental pathophysiological feature of the diverticulum's formation. - The question asks for the **most accurate statement** regarding its nature, and its classification as a pulsion diverticulum directly addresses its pathological mechanism.

Q: Pulled up cecum is seen in which condition?

Ileocecal tuberculosis (TB). ***Ileocecal tuberculosis (TB)*** - **Ileocecal tuberculosis** commonly causes **fibrosis** and stricture formation in the ileocecal region, which can lead to the **retraction or pulling up of the cecum**. - This "pulled-up cecum" is a characteristic radiographic finding, often associated with a **patulous ileocecal valve** and inflammatory changes. *Cecal carcinoma* - While cecal carcinoma can cause a mass and involve the cecum, it does not typically lead to a "pulled-up" appearance. - Carcinoma usually presents as a **filling defect** or an **obstructing lesion** rather than retraction. *Intussusception* - **Intussusception** involves the telescoping of one part of the intestine into another, usually presenting as a **target sign** on imaging. - This condition does not cause a *pulled-up cecum*; instead, it involves the distal segment invaginating into the proximal segment. *Colon carcinoma* - **Colon carcinoma** can manifest as an **apple-core lesion** or an obstructing mass, but like cecal carcinoma, it generally does not cause the cecum to be pulled upwards. - The pathology is primarily one of **luminal narrowing** or mass obstruction.

Question 1

Among pathological lead points, the commonest cause of intussusception is -

Accepted Answer

Meckel's diverticulum

Answer

Submucous lipoma

Answer

Polyp

Answer

Hypertrophy of submucous peyer's patches

Question 2

All of the following are surgical options in the management of esophageal carcinoma except -

Accepted Answer

Sistrunk operation

Answer

Ivor Lewis Approach

Answer

McKeown's Approach

Answer

Transhiatal removal

Question 3

A 55 year old woman presented with history of recurrent episodes of right upper abdominal pain for the last one year. She presented to emergency with history of jaundice and fever for 2 days. On examination, the patient appeared toxic and had a blood pressure of 100/60 mmHg. She was started on intravenous antibiotics. Ultrasound of the abdomen showed presence of stones in the common bile duct. What would be the best treatment option for her -

Accepted Answer

Endoscopic Retrograde Cholangiopancreatography (ERCP) and bile duct stone extraction

Answer

Open bile duct surgery for stone removal

Answer

Lithotripsy for bile duct stones

Answer

Laparoscopic cholecystectomy (gallbladder removal)

Question 4

Where does spontaneous esophageal rupture (Boerhaave syndrome) most commonly occur?

Accepted Answer

Above the diaphragmatic aperture

Answer

Below the diaphragmatic aperture

Answer

Pharyngoesophageal junction

Answer

At the crossing of the arch of aorta

Question 5

What is the commonest site of peptic ulcer?

Accepted Answer

First part of the duodenum

Answer

Second part of the duodenum

Answer

Distal third of the stomach

Answer

Pylorus of the stomach

Question 6

A 25 year old male is receiving conservative management for an appendicular mass since 3 days now presents with a rising pulse rate, tachycardia and fever. The mode of management must be -

Accepted Answer

Proceed to laparotomy and appendicectomy

Answer

Intravenous antibiotics

Answer

Continue Ochsner Sherren regimen with close monitoring

Answer

Continue conservative management

Question 7

Which of the following is true about Mallory-Weiss tear -

Accepted Answer

It is a mucosal tear not extending through the muscle layer

Answer

It is more common in women than men

Answer

It is common in young individuals

Answer

It is associated with achalasia cardia

Question 8

All of the following are true about Nissen Fundoplication except which of the following?

Accepted Answer

Reinforcement is done only in the posterior half

Answer

It is done for GERD

Answer

Upper part of stomach is plicated around the lower esophagus

Answer

It is done for paraesophageal hiatus hernia

Question 9

Which of the following statements is MOST accurate regarding Zenker diverticulum?

Accepted Answer

It is a pulsion diverticulum

Answer

It is between superior and middle constrictor

Answer

It projects posteriorly

Answer

It is commonly seen in older adults

Question 10

Pulled up cecum is seen in which condition?

Accepted Answer

Ileocecal tuberculosis (TB)

Answer

Cecal carcinoma

Answer

Intussusception

Answer

Colon carcinoma

Gastrointestinal Surgery — MCQs

Gastrointestinal Surgery — MCQs

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