Gastrointestinal Surgery Practice Questions

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 about corrosive injury of the esophagus is incorrect?

Acids form liquefactive necrosis. ***Acids form liquefactive necrosis*** - This statement is **incorrect** because acids typically cause **coagulative necrosis**, not liquefactive necrosis. - **Coagulative necrosis** creates a firm eschar that limits deeper tissue penetration, making it a self-limiting injury. - This is the key distinguishing feature between acid and alkali injuries. *Alkalis are usually ingested in larger volumes* - This statement is **correct**; alkaline substances lack the immediate burning sensation of acids. - The absence of immediate pain feedback allows patients to ingest **larger quantities** before stopping. - This contributes to more extensive esophageal injury in alkali ingestions. *Alkalis cause liquefactive necrosis* - This statement is **correct**; alkalis cause **liquefactive (colliquative) necrosis** through saponification of fats and protein dissolution. - This type of necrosis allows for **continued deep penetration** into tissue layers. - Liquefactive necrosis is responsible for the severe, full-thickness esophageal injuries seen with alkali ingestion. *Acids cause more gastric damage than alkalis* - This statement is **correct**; acids preferentially damage the **stomach** due to pyloric spasm and pooling. - The acidic gastric environment provides some neutralization of alkalis, reducing gastric injury from alkaline substances. - Conversely, alkalis cause more severe **esophageal damage** than acids.

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: Which of the following statements about traction diverticula of the esophagus is false?

Triangular appearance. ***Triangular appearance*** - This is the **FALSE statement** and therefore the correct answer to this question. - Traction diverticula typically have a **broad neck** and appear **conical or tent-shaped**, not triangular. - The shape results from **external traction** on the esophageal wall, usually caused by mediastinal inflammation or fibrosis (classically from tuberculosis lymphadenitis). *Maintains elastic recoil* - This is a **TRUE statement** about traction diverticula. - Since they are **true diverticula** containing all layers of the esophageal wall (including the muscularis propria), the muscular and elastic components are preserved. - This allows for normal contractile function and elastic recoil. *Does not empty completely* - This is a **TRUE statement** about **pulsion diverticula**, NOT traction diverticula. - Traction diverticula are **wide-mouthed with broad necks**, allowing for efficient emptying. - They rarely retain food or secretions, unlike pulsion diverticula which have narrow necks and tend to retain contents. *Contains all layers* - This is a **TRUE statement** about traction diverticula. - They are **true diverticula**, meaning they involve all layers of the esophageal wall (mucosa, submucosa, muscularis propria, and adventitia). - This distinguishes them from **pseudodiverticula** (pulsion type), which only involve herniation of mucosa and submucosa through the muscular layer.

Q: Depth of gastric carcinomas is assessed by -

Endoluminal ultrasound. ***Endoluminal ultrasound*** - **Endoluminal ultrasound (EUS)** utilizes a small ultrasound transducer at the tip of an endoscope to provide high-resolution images of the **gastric wall layers**, making it ideal for assessing the **depth of tumor invasion**. - EUS can accurately stage the **T-stage (tumor invasion depth)** and detect **regional lymph node involvement** (N-stage), which are crucial for treatment planning in gastric carcinoma. *Abdominal ultrasound* - **Abdominal ultrasound** has limited ability to visualize the fine layers of the gastric wall and is primarily used for detecting **larger masses**, **liver metastases**, or **ascites**. - It is not precise enough to determine the **depth of tumor invasion** in gastric carcinoma. *Barium meal* - A **barium meal** (upper GI series) is a radiographic study that visualizes the lumen of the esophagus, stomach, and duodenum, primarily detecting **mucosal abnormalities** or **filling defects**. - While it can identify the presence of a tumor, it provides no information on the **depth of penetration** into the gastric wall. *Laparoscopy* - **Laparoscopy** is a surgical procedure that allows for direct visual inspection of the peritoneal cavity and offers the best method for detecting **peritoneal carcinomatosis** or **distant metastases**. - While it can confirm the presence of a tumor and help in operative planning, it does not provide detailed information about the **depth of intramural invasion** of the gastric wall itself, which is best assessed by EUS.

Q: Which of the following signs of acute appendicitis is characterized by pain in the right lower quadrant upon palpation of the left lower quadrant?

Rovsing's. ***Rovsing's sign*** - **Rovsing's sign** is characterized by pain in the **right lower quadrant** when the **left lower quadrant** is palpated. - This occurs due to the movement of gas/contents in the colon, causing pressure on the inflamed appendix and producing **referred pain** in the RLQ. - It is a reliable clinical sign with good specificity for acute appendicitis. *Psoas sign* - The **psoas sign** is elicited by **pain on right hip extension** when the patient lies on their left side. - This indicates irritation of the **psoas muscle** by an inflamed **retrocecal appendix**. - This is not related to left lower quadrant palpation. *Obturator sign* - The **obturator sign** involves pain on **internal rotation of the flexed right hip**. - This suggests irritation of the **obturator internus muscle** by a **pelvic appendix**. - This is not elicited by abdominal palpation but by hip manipulation. *McBurney's point tenderness* - **McBurney's point** is located at the junction of the **lateral one-third and medial two-thirds** of a line from the anterior superior iliac spine to the umbilicus. - Direct tenderness at this point is highly suggestive of appendicitis. - However, this involves **direct palpation of the RLQ**, not left-sided palpation causing right-sided pain.

Q: Multiple air fluid levels in X-ray of abdomen are seen in

Intestinal obstruction. ***Intestinal obstruction*** - **Air fluid levels** are a classic radiographic sign of bowel obstruction, resulting from the accumulation of gas and fluid proximal to the obstructed segment. - The obstructed bowel segments fill with ingested air and digestive fluids, forming distinct horizontal fluid levels layered below gas bubbles, particularly evident on **erect or decubitus abdominal X-rays**. *Hollow viscera perforation* - This condition is characterized by the presence of **free air under the diaphragm** (pneumoperitoneum), not typically by multiple air-fluid levels within the bowel loops. - While fluid might extravasate, the primary radiographic finding is *free intraperitoneal gas*, indicating a breach in the luminal wall. *Pyoperitoneum* - Refers to the presence of **pus within the peritoneal cavity**, which would manifest as diffuse fluid accumulation rather than discrete air-fluid levels within bowel segments. - While gas might be present if associated with a gas-forming infection, it's not the primary or defining characteristic like the ordered air-fluid levels of obstruction. *None of the options* - This option is incorrect because **intestinal obstruction** is a well-established cause of multiple air-fluid levels on abdominal X-rays. - The other conditions listed do not typically present with this specific radiographic pattern as their primary or defining feature.

Q: Most common cause of acute abdomen in a young girl?

Acute appendicitis. ***Acute appendicitis*** - **Acute appendicitis** is the most common cause of acute abdomen in children and young adults, including young girls. - Its high incidence across this age group makes it the leading diagnosis for acute abdominal pain requiring surgical intervention. *Ovarian torsion* - While it can cause severe acute abdominal pain in young girls, **ovarian torsion** is less common than appendicitis. - It often presents with sudden onset, severe, unilateral lower abdominal pain, sometimes with a palpable mass. *Mittelschmerz* - "**Mittelschmerz**" refers to pelvic pain experienced by some women during ovulation, typically mid-cycle. - This is a physiological event, not an acute surgical emergency, and the pain is usually mild and self-limiting. *Renal colic* - **Renal colic** is caused by kidney stones and is characterized by severe, colicky pain radiating from the flank to the groin. - While possible, it is less common in young girls compared to appendicitis and often associated with urinary symptoms.

Q: What is the most common cause of small intestine obstruction?

Postoperative adhesions. ***Postoperative adhesions*** - **Postoperative adhesions** are by far the most common cause of **small bowel obstruction** in developed countries, leading to fibrous bands that can kink or strangulate the bowel. - The risk of adhesion formation increases with the number and complexity of prior **abdominal surgeries**. *Intussusception* - **Intussusception** is a condition where one segment of the intestine telescopes into another, which is more common in **children** than adults. - While it can cause obstruction, it is a relatively rare cause of small bowel obstruction in the general adult population. *Idiopathic adhesions* - While adhesions can occur, very few are truly **idiopathic**; most have an identifiable cause, such as prior surgery or inflammation. - They are not considered the most prevalent cause compared to those clearly linked to previous surgical interventions. *Tumors* - **Tumors**, both primary and metastatic, can cause small bowel obstruction by stricturing the lumen or compressing it externally. - Though a significant cause, tumors are less common than postoperative adhesions for acute small bowel obstructions.

Q: What is the most common site of cancer in the esophagus?

Middle 1/3rd. ***Middle 1/3rd*** - The **middle 1/3rd of the esophagus** is the most common site for **esophageal cancer globally and in India**. - **Squamous cell carcinoma (SCC)** accounts for approximately **90-95% of esophageal cancers in India** and predominantly affects the middle third. - This pattern is consistent across most **Asian, African, and South American populations** where SCC remains the predominant histological type. - Risk factors include **tobacco, alcohol, hot beverages, and nutritional deficiencies**, which are common in endemic regions. *Lower 1/3rd* - The lower 1/3rd is the most common site for **adenocarcinoma**, which has become predominant in **Western countries (USA, Western Europe)**. - This is associated with **Barrett's esophagus** secondary to chronic **gastroesophageal reflux disease (GERD)**. - While adenocarcinoma incidence is rising globally, **SCC still predominates in India**, making the middle third the most common overall site. *Upper 1/3rd* - The upper 1/3rd (cervical esophagus) is the **least common site** for esophageal cancer, accounting for only 10-15% of cases. - Can be affected by SCC but represents a minority of esophageal malignancies. *Gastroesophageal junction (GEJ)* - GEJ cancers have increased in incidence, particularly in Western populations, and are often classified as **Siewert type tumors**. - These are frequently **adenocarcinomas** and may be classified separately from true esophageal cancers. - In the **Indian context**, where SCC predominates, GEJ adenocarcinomas are less common than middle third SCC.

Question 1

Rolled up omentum is seen in cases of?

Accepted Answer

Peritoneal tuberculosis

Answer

Peritoneal metastases

Answer

Perforation peritonitis

Answer

Malrotation of gut

Question 2

Which of the following statements about corrosive injury of the esophagus is incorrect?

Accepted Answer

Acids form liquefactive necrosis

Answer

Alkalis are usually ingested in larger volumes

Answer

Alkalis cause liquefactive necrosis

Answer

Acids cause more gastric damage than alkalis

Question 3

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 4

Which of the following statements about traction diverticula of the esophagus is false?

Accepted Answer

Triangular appearance

Answer

Maintains elastic recoil

Answer

Does not empty completely

Answer

Contains all layers

Question 5

Depth of gastric carcinomas is assessed by -

Accepted Answer

Endoluminal ultrasound

Answer

Barium meal

Answer

Abdominal ultrasound

Answer

Laparoscopy

Question 6

Which of the following signs of acute appendicitis is characterized by pain in the right lower quadrant upon palpation of the left lower quadrant?

Accepted Answer

Rovsing's

Answer

Psoas sign

Answer

Obturator sign

Answer

McBurney's point tenderness

Question 7

Multiple air fluid levels in X-ray of abdomen are seen in

Accepted Answer

Intestinal obstruction

Answer

Hollow viscera perforation

Answer

Pyoperitoneum

Answer

None of the options

Question 8

Most common cause of acute abdomen in a young girl?

Accepted Answer

Acute appendicitis

Answer

Ovarian torsion

Answer

Renal colic

Answer

Mittelschmerz

Question 9

What is the most common cause of small intestine obstruction?

Accepted Answer

Postoperative adhesions

Answer

Idiopathic adhesions

Answer

Tumors

Answer

Intussusception

Question 10

What is the most common site of cancer in the esophagus?

Accepted Answer

Middle 1/3rd

Answer

Upper 1/3rd

Answer

Gastroesophageal junction (GEJ)

Answer

Lower 1/3rd

Gastrointestinal Surgery — MCQs

Gastrointestinal Surgery — MCQs

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