Gastrointestinal Surgery Practice Questions

Q: Which procedure is indicated for a patient with Barrett's esophagus and high-grade dysplasia?

Endoscopic mucosal resection. ***Endoscopic mucosal resection*** - **Endoscopic mucosal resection (EMR)** is indicated for Barrett's esophagus with **high-grade dysplasia (HGD)** because it allows for the removal of visible lesions and accurate staging, confirming the absence of invasive carcinoma. - It also provides tissue for histopathological examination to ensure that the HGD has been adequately resected and to detect any underlying **adenocarcinoma**. *Photodynamic therapy* - **Photodynamic therapy (PDT)** uses light-activated drugs to destroy dysplastic cells, but it is less commonly used for **HGD** due to higher rates of stricture formation and incomplete eradication compared to modern endoscopic techniques. - While PDT can be effective for flat, multifocal dysplasia, it is generally considered a second-line therapy or for those who cannot undergo resection. *Proton pump inhibitor therapy* - **Proton pump inhibitors (PPIs)** are essential for managing **gastroesophageal reflux disease (GERD)** symptoms and preventing further progression of Barrett's esophagus, but they do not treat or eradicate existing **high-grade dysplasia**. - While PPIs create a less acidic environment, which can help prevent further injury, they do not remove the dysplastic cells themselves. *Esophagectomy* - **Esophagectomy** is a major surgical procedure involving the removal of part or all of the esophagus; it is typically reserved for patients with **invasive esophageal adenocarcinoma** or multifocal HGD that cannot be treated endoscopically. - The risks associated with esophagectomy, such as anastomotic leaks and strictures, are too high for HGD that can be managed with less invasive endoscopic techniques.

Q: A 40-year-old male presents with a mass in the groin that becomes more prominent when standing and disappears when lying down. What is the most likely diagnosis?

Inguinal hernia. ***Inguinal hernia*** - The classic presentation of a **groin mass** that becomes more prominent with **standing** and reduces or disappears when **lying down** is highly characteristic of an inguinal hernia. - This behavior is due to the **protrusion of abdominal contents** through a weakness in the abdominal wall, which is more evident with increased intra-abdominal pressure. *Femoral hernia* - While also a groin hernia, **femoral hernias** typically present as a mass inferior to the **inguinal ligament** and medial to the **femoral vessels**. - They are more common in **women** and have a higher risk of **strangulation**, but the described positional changes are more typical of inguinal hernias. *Testicular torsion* - **Testicular torsion** involves the twisting of the spermatic cord, leading to acute **scrotal pain**, **swelling**, and often **nausea/vomiting**. - It is an **acute surgical emergency** and does not present as a gradual, reducible groin mass that changes with position. *Hydrocele* - A **hydrocele** is a collection of fluid around the testis within the **tunica vaginalis**, causing **scrotal swelling**. - It is typically **transilluminable** and does not usually reduce or disappear with position changes, nor does it typically present as a mass in the groin.

Q: A patient presents with signs of bowel obstruction following a recent appendectomy. What is the most likely cause?

Adhesive bands. ***Adhesive bands*** - **Adhesive bands** (scar tissue) are the most common cause of small bowel obstruction after abdominal surgery, including appendectomy. - These adhesions can form an internal trap or kink the bowel, leading to obstruction. *Hernia* - While hernias can cause bowel obstruction, they typically present as a palpable **bulge** or a history consistent with a new defect, which is not mentioned. - A hernia resulting from a recent appendectomy wound site is possible but less likely than adhesions as a cause of obstruction in the immediate post-operative period. *Tumor* - **Tumors** generally cause a more gradual onset of obstructive symptoms and are less likely to be the cause of acute obstruction shortly after an appendectomy. - No risk factors for a tumor, such as age or specific medical history, are provided. *Intussusception* - **Intussusception** is more common in **children** and involves one segment of the intestine telescoping into another. - It is a rare cause of bowel obstruction in adults and is not typically associated with a recent appendectomy.

Q: Which of the following statements about Zenker's diverticulum is false?

It is the most common esophageal diverticulum. ***It is the most common esophageal diverticulum*** - This statement is **false**. Zenker's diverticulum is the most common type of **pharyngoesophageal diverticulum**, not esophageal diverticulum. - **Midesophageal diverticula** (traction diverticula) and **epiphrenic diverticula** are types of true esophageal diverticula that are more common than Zenker's diverticulum. *Most patients are above 50 years of age* - This statement is **true**. Zenker's diverticulum is typically a disease of **older individuals**, with most patients presenting over the age of 50. - It results from **cricopharyngeal muscle dysfunction** and increased intraluminal pressure over time. *Mucosal outpouching through the Killian's triangle* - This statement is **true**. Zenker's diverticulum is a **false diverticulum**, meaning it involves only the mucosa and submucosa. - It protrudes through **Killian's triangle**, a weak area between the cricopharyngeal muscle and the thyropharyngeal muscle. *Halitosis is commonly associated with Zenker's diverticulum* - This statement is **true**. Food and debris can become trapped within the diverticulum. - The decaying material can lead to **bad breath** (halitosis) and a sour taste.

Q: Rolled up omentum is seen in cases of?

Peritoneal tuberculosis. ***Peritoneal tuberculosis*** - **Rolled up omentum**, along with **ascites** and **peritoneal nodules**, is a classic finding in **peritoneal tuberculosis**. [1] - This is secondary to the inflammatory and fibrotic response of the omentum to the mycobacterial infection. [1] *Peritoneal metastases* - Peritoneal metastases often present with **omental caking**, which is a diffuse thickening and infiltration, rather than a distinct "rolled up" appearance. - The omentum becomes laden with tumor cells, leading to a more irregular and widespread thickening. *Perforation peritonitis* - **Perforation peritonitis** is characterized by diffuse inflammation due to the spillage of visceral contents into the peritoneal cavity, leading to generalized peritonitis. - While the omentum may be inflamed and adherent, it typically does not form a distinct "rolled up" mass but rather tries to wall off the perforation. *Malrotation of gut* - **Malrotation of the gut** is a congenital anomaly involving abnormal positioning of the intestines during embryonic development. - It is associated with conditions like **volvulus** and intestinal obstruction, but not with a "rolled up omentum."

Q: Which of the following statements is NOT true about highly selective vagotomy?

Nerves of Latarjet are sacrificed. ***Nerves of Latarjet are sacrificed*** - Highly selective vagotomy (HSV) **preserves the nerves of Latarjet** to maintain pyloric function and gastric emptying. - Sacrificing these nerves would lead to impaired gastric emptying and necessitates a **drainage procedure**, thus transforming it into a truncal or selective vagotomy. *Recurrence rates are higher than vagotomy and drainage and vagotomy and antrectomy* - This statement is **true** because HSV is less complete in denervating the stomach, leading to higher rates of **ulcer recurrence** compared to more extensive vagotomies. - While it has a lower incidence of side effects, its **reduced efficacy** in preventing recurrence is a known trade-off. *Entire gastric reservoir capacity is preserved* - This statement is **true** because HSV specifically denervates only the acid-secreting parietal cell mass, preserving the **innervation to the antrum** and pylorus. - This preservation maintains normal **gastric motility** and reservoir function, preventing post-vagotomy syndromes. *It is also known as parietal cell vagotomy* - This statement is **true** because highly selective vagotomy targets only the nerve branches supplying the **parietal cell-containing** fundus and body of the stomach. - The goal is to reduce acid secretion without affecting the nerves responsible for **gastric emptying** or antral function.

Q: The most appropriate first-line investigation to be performed in suspected cases of gastric cancer is:

Endoscopy. ***Endoscopy*** - **Endoscopy with biopsy** is the most definitive first-line investigation for suspected gastric cancer as it allows direct visualization of the gastric mucosa and tissue sampling for histological confirmation. - It is crucial for early detection, staging, and guiding subsequent management strategies in patients suspected of having gastric malignancy. *Double contrast radiography* - **Double contrast radiography** (barium swallow) can reveal suspicious mucosal abnormalities but is less sensitive and specific than endoscopy for detecting and characterizing early gastric lesions. - It does not allow for **biopsy**, which is essential for definitive diagnosis of cancer. *Plain radiography* - **Plain radiography** (X-ray) has very limited utility in diagnosing gastric cancer as it cannot visualize mucosal lesions or provide detailed information about the gastric wall. - It is primarily used for detecting complications like **perforation** or **obstruction**, rather than primary diagnosis. *CT Scan* - A **CT scan** is valuable for staging gastric cancer after diagnosis, assessing local invasion, lymph node involvement, and distant metastases. - However, it is not the first-line diagnostic modality because it cannot directly visualize early mucosal lesions or provide **histological confirmation** via biopsy.

Q: Most common type of Hiatal hernia is

Sliding. ***Sliding*** - **Type I hiatal hernia** is known as a sliding hiatal hernia, where the **gastroesophageal junction** and part of the stomach slide up into the mediastinum. - This is the **most common type**, accounting for over 90% of all hiatal hernias. *Rolling* - **Type II hiatal hernia**, or **paraesophageal hernia**, involves the fundus of the stomach herniating alongside the esophagus through the hiatus while the gastroesophageal junction remains in its normal anatomical position. - It is much **less common** than the sliding type and poses a higher risk of complications like **volvulus** or incarceration. *Mixed* - **Type III hiatal hernia** is a **mixed hernia**, combining features of both sliding and rolling types. - In this type, the **gastroesophageal junction** is displaced into the chest cavity, and another part of the stomach, typically the fundus, herniates next to it. *Type IV* - **Type IV hiatal hernia** is the rarest type, where other abdominal organs such as the **colon, spleen, pancreas, or small bowel** herniate through the diaphragmatic defect along with the stomach. - This type represents a complex hernia with significant risk of complications.

Q: Most prevalent symptom in patients of leiomyoma of esophagus is

Dysphagia. ***Dysphagia*** - **Dysphagia (difficulty swallowing)** is the most common presenting symptom in patients with esophageal leiomyoma. - This occurs because the tumor, even if benign, can grow large enough to cause **mechanical obstruction** of the esophageal lumen. *Pain* - While some patients may experience chest pain or discomfort, it is generally **less frequent** and less severe than dysphagia. - Pain is more commonly associated with rapidly growing tumors or complications like **ulceration**, which are rare for leiomyomas. *Pyrosis* - **Pyrosis (heartburn)** is not a typical or prevalent symptom of esophageal leiomyomas. - Heartburn is more commonly associated with **gastroesophageal reflux disease (GERD)**. *Weight loss* - **Weight loss** is usually a symptom of more advanced or aggressive esophageal pathologies, such as **malignant tumors**. - Although severe dysphagia can eventually lead to reduced oral intake and weight loss, it is not often the initial or most prevalent symptom in benign leiomyomas.

Question 1

Which procedure is indicated for a patient with Barrett's esophagus and high-grade dysplasia?

Accepted Answer

Endoscopic mucosal resection

Answer

Photodynamic therapy

Answer

Proton pump inhibitor therapy

Answer

Esophagectomy

Question 2

A 40-year-old male presents with a mass in the groin that becomes more prominent when standing and disappears when lying down. What is the most likely diagnosis?

Accepted Answer

Inguinal hernia

Answer

Femoral hernia

Answer

Testicular torsion

Answer

Hydrocele

Question 3

A patient presents with signs of bowel obstruction following a recent appendectomy. What is the most likely cause?

Accepted Answer

Adhesive bands

Answer

Hernia

Answer

Tumor

Answer

Intussusception

Question 4

Which of the following statements about Zenker's diverticulum is false?

Accepted Answer

It is the most common esophageal diverticulum

Answer

Most patients are above 50 years of age

Answer

Mucosal outpouching through the Killian's triangle

Answer

Halitosis is commonly associated with Zenker's diverticulum

Question 5

Rolled up omentum is seen in cases of?

Accepted Answer

Peritoneal tuberculosis

Answer

Peritoneal metastases

Answer

Perforation peritonitis

Answer

Malrotation of gut

Question 6

Which of the following statements is NOT true about highly selective vagotomy?

Accepted Answer

Nerves of Latarjet are sacrificed

Answer

Entire gastric reservoir capacity is preserved

Answer

It is also known as parietal cell vagotomy

Answer

Recurrence rates are higher than vagotomy and drainage and vagotomy and antrectomy.

Question 7

Early and late suspected instrumental perforation of the oesophagus should first be assessed using?

Accepted Answer

Water soluble contrast swallow

Answer

CT Scan

Answer

MRI

Answer

Dilute barium swallow

Question 8

The most appropriate first-line investigation to be performed in suspected cases of gastric cancer is:

Accepted Answer

Endoscopy

Answer

Plain radiography

Answer

CT Scan

Answer

Double contrast radiography

Question 9

Most common type of Hiatal hernia is

Accepted Answer

Sliding

Answer

Rolling

Answer

Mixed

Answer

Type IV

Question 10

Most prevalent symptom in patients of leiomyoma of esophagus is

Accepted Answer

Dysphagia

Answer

Pain

Answer

Pyrosis

Answer

Weight loss

Gastrointestinal Surgery — MCQs

Gastrointestinal Surgery — MCQs

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