Gastrointestinal Surgery Practice Questions

Q: Hernia containing Meckel's diverticulum is a?

Littre hernia. ***Littre hernia*** - A **Littre hernia** is explicitly defined as a hernia that contains a **Meckel's diverticulum**. - This specific type of hernia can occur in various locations, including inguinal, femoral, or umbilical hernias. *Maydl's hernia* - A **Maydl's hernia**, also known as a W-hernia or retrograde incarceration, involves two loops of bowel within the hernia sac, with a segment of incarcerated bowel forming a 'W' outside the sac. - This typically involves an incarcerated bowel segment undergoing strangulation. *Hernia of Winslow* - A **hernia of Winslow** refers to the protrusion of abdominal contents, usually small bowel, through the **foramen of Winslow** (epiploic foramen) into the lesser sac. - This is an internal hernia type, distinct from external abdominal wall hernias. *Pantaloon hernia* - A **pantaloon hernia** (or saddlebag hernia) is a combined direct and indirect inguinal hernia. - It occurs when the hernia sac straddles the inferior epigastric vessels.

Q: Gangrene of the intestine is seen in all the following conditions, except:

Tricuspid Valve Endocarditis. ***Tricuspid Valve Endocarditis*** - While vegetations from **tricuspid valve endocarditis** can embolize, they typically affect the **pulmonary circulation** (e.g., pulmonary embolism, septic pulmonary infarcts) due to the venous drainage pattern. - Embolization from the right side of the heart to the systemic circulation (like the mesenteric arteries) is rare unless there's a **patent foramen ovale** or similar intracardiac shunt. - Therefore, tricuspid endocarditis does **NOT** typically cause intestinal gangrene. *Shock* - **Hypoperfusion** during shock leads to a severe reduction in blood flow to the intestines, causing **ischemia**. - Prolonged or severe ischemia can result in **intestinal gangrene** due to tissue death. - This is known as **non-occlusive mesenteric ischemia (NOMI)**. *Mesenteric artery thrombosis* - A **thrombus** in the mesenteric artery directly blocks blood supply to a segment of the intestine. - This abrupt cessation of blood flow leads rapidly to **ischemia and infarction**, resulting in gangrene. - Accounts for approximately 25-30% of acute mesenteric ischemia cases. *Volvulus* - **Volvulus** involves the twisting of a loop of intestine around its mesentery, which constricts and obstructs the mesenteric blood vessels. - This vascular compromise quickly leads to **ischemia and gangrene** of the twisted bowel segment. - Common sites include sigmoid colon and cecum.

Q: In a patient with gastric carcinoma involving the antrum with extensive perigastric and distant lymph node involvement (para-aortic nodes) and poor performance status, what is the most appropriate surgical management option?

Palliative gastrectomy. ***Palliative gastrectomy*** - This option is appropriate when gastric cancer has **distant lymph node metastases (para-aortic nodes - M1 disease)** and poor performance status, indicating **non-curable disease** - The goal is to alleviate symptoms like bleeding, obstruction, or pain to improve **quality of life**, not to achieve cure - **Palliative gastrectomy** removes the primary tumor to prevent complications such as bleeding or obstruction, even when cure is not achievable - Surgery should only be considered if the patient is symptomatic and has adequate performance status to tolerate the procedure *Total radical gastrectomy* - This is the standard curative approach for **resectable gastric cancer**, including those with regional (perigastric) lymph node involvement (N1-N3 disease) - Involves complete tumor resection with clear margins and **D2 lymphadenectomy** for adequate staging and potential cure - However, in this case with **distant nodal metastases (M1 disease)** and poor performance status, radical surgery would not achieve cure and carries high morbidity without proportional survival benefit - Regional lymph node involvement alone does NOT preclude curative surgery, but distant nodal spread and poor performance status do *Gastrojejunostomy* - This bypass procedure relieves **gastric outlet obstruction** without removing the tumor - Indicated when there is pyloric or distal gastric obstruction causing symptoms - Less morbid than gastrectomy but does not address bleeding from the tumor or significant tumor burden - May be preferred over gastrectomy if the patient has very poor performance status and only obstructive symptoms *None of the options* - Incorrect, as one of the surgical options (palliative gastrectomy) is appropriate for this clinical scenario - The choice between palliative resection and bypass depends on symptoms, performance status, and goals of care

Q: The triad of diverticulosis, gallstones, and hiatus hernia is termed as:

Saint's triad. ***Saint's triad*** - This specific combination of **diverticulosis, gallstones, and hiatus hernia** is traditionally known as **Saint's triad**. - It describes the co-occurrence of three common age-related gastrointestinal conditions often seen together. *Beck's triad (hypotension, muffled heart sounds, jugular venous distention)* - **Beck's triad** is characteristic of **cardiac tamponade**, a life-threatening condition where fluid accumulates around the heart, impairing its function. - The presented triad of gastrointestinal conditions is unrelated to cardiac tamponade. *Whipple's triad (neuroglycopenic symptoms, hypoglycemia, improvement after glucose administration)* - **Whipple's triad** is used to diagnose **insulinoma** or other causes of **hypoglycemia** in non-diabetic individuals. - It specifically refers to symptoms related to low blood sugar and their resolution upon glucose administration, not gastrointestinal anatomical issues. *Murphy's triad (abdominal pain, fever, vomiting)* - **Murphy's triad** describes the classical symptoms of **acute appendicitis**. - These are clinical signs of acute inflammation within the abdomen, distinctly different from the chronic anatomical conditions listed in the question.

Q: All of the following can be used as endoscopic sclerosants in the treatment of variceal bleeding, except -

Acetic acid. ***Acetic acid*** - **Acetic acid** is not typically used for endoscopic variceal sclerotherapy due to its potent corrosive nature and high risk of tissue damage. - While it has been explored in experimental settings for superficial lesions (e.g., cervical disease), it is not a standard sclerosant for esophageal varices. *Polydochanol* - **Polydochanol** (or Aethoxysclerol®) is a commonly used sclerosing agent for esophageal varices. - It works by inducing **endothelial damage** and subsequent thrombosis and fibrosis within the varix. *Cyanoacrylate* - **Cyanoacrylate** glue is particularly effective for large **gastric varices** due to its ability to rapidly polymerize and achieve immediate hemostasis. - It directly occludes the varix, preventing rebleeding, and is often preferred for gastric varices where conventional sclerotherapy might be less effective. *Alcohol* - **Absolute alcohol** (ethanol) is a traditional and effective sclerosant for esophageal varices, causing rapid **dehydration** and protein denaturation within the vessel wall. - It leads to immediate thrombosis and subsequent fibrosis of the targeted varices.

Q: What is the most common cause of intestinal obstruction?

Adhesions. ***Adhesions*** - **Post-surgical adhesions** are by far the leading cause of **small bowel obstruction** in adults, accounting for approximately 60-80% of cases. - They form as fibrous bands between tissue surfaces after surgery, which can later constrict or twist the bowel. *Ileocaecal tuberculosis* - While it can cause intestinal obstruction due to **stricture formation** and inflammation, it is a much rarer cause, particularly in developed countries. - This condition is more common in immunocompromised individuals or endemic areas. *Carcinoma colon* - **Colorectal cancer** is a common cause of **large bowel obstruction**, but it is less frequent as a cause of overall intestinal obstruction compared to adhesions. - The obstruction typically develops gradually as the tumor grows and narrows the bowel lumen. *Intussusception* - This is a more common cause of intestinal obstruction in **infants and young children**, where one part of the intestine telescopes into another. - In adults, it is a relatively rare cause of obstruction and is often associated with a **lead point** such as a tumor or polyp.

Q: All are causes of mechanical intestinal obstruction except which of the following?

Mesenteric vascular occlusion. ***Mesenteric vascular occlusion*** - This condition causes **ischemic bowel injury** due to impaired blood flow, leading to **paralytic ileus** rather than a physical blockage. - While it results in intestinal dysfunction, it does not involve a **mechanical obstruction** by a physical barrier. *Gall stones* - Large **gallstones** can erode through the gallbladder wall into the small intestine, leading to a condition called **gallstone ileus**. - This creates a **physical obstruction** within the lumen of the small bowel. *Intussusception* - **Intussusception** involves one segment of the intestine telescoping into an adjacent segment. - This creates a **mechanical blockage** of the intestinal lumen. *Bands* - Internal **fibrous bands** or adhesions, often from previous surgeries, can constrict and obstruct the bowel lumen. - These bands represent a direct **physical impediment** to the passage of intestinal contents.

Q: Dieulafoy's lesion is seen in what?

Stomach. ***Stomach*** - **Dieulafoy's lesion** is a rare cause of recurrent, massive gastrointestinal bleeding, most commonly found in the **stomach**, particularly along the lesser curvature within 6 cm of the gastroesophageal junction. - It is characterized by an abnormally large, tortuous arteriole that erodes through the mucosa, without an associated ulcer or aneurysm, leading to profuse arterial bleeding. *Jejunum* - While gastrointestinal bleeding can occur in the jejunum from various causes, **Dieulafoy's lesion** is exceedingly rare in the small bowel. - Causes of jejunal bleeding are more commonly related to disorders like **Meckel's diverticulum**, vascular malformations, or tumors. *Oesophagus* - The esophagus is a less common site for Dieulafoy's lesions, though rare cases have been reported. - **Esophageal bleeding** is more often associated with **esophageal varices** in patients with portal hypertension or **Mallory-Weiss tears**. *Anus* - Dieulafoy's lesion has been reported in the rectum and other parts of the colon, but it is extremely uncommon in the anus itself. - **Anal bleeding** is typically due to common conditions like **hemorrhoids**, **anal fissures**, or perianal abscesses.

Question 1

Hernia containing Meckel's diverticulum is a?

Accepted Answer

Littre hernia

Answer

Maydl's hernia

Answer

Hernia of Winslow

Answer

Pantaloon hernia

Question 2

Which of the following is true about Zenker's diverticulum?

Accepted Answer

Treatment options typically include surgical interventions such as diverticulectomy or cricopharyngeal myotomy.

Answer

It is asymptomatic

Answer

Occurs in the mid-esophagus

Answer

It occurs in children

Question 3

Gangrene of the intestine is seen in all the following conditions, except:

Accepted Answer

Tricuspid Valve Endocarditis

Answer

Shock

Answer

Mesenteric artery thrombosis

Answer

Volvulus

Question 4

In a patient with gastric carcinoma involving the antrum with extensive perigastric and distant lymph node involvement (para-aortic nodes) and poor performance status, what is the most appropriate surgical management option?

Accepted Answer

Palliative gastrectomy

Answer

None of the options

Answer

Gastrojejunostomy

Answer

Total radical gastrectomy

Question 5

The triad of diverticulosis, gallstones, and hiatus hernia is termed as:

Accepted Answer

Saint's triad

Answer

Whipple's triad

Answer

Murphy's triad

Answer

Beck's triad

Question 6

All of the following can be used as endoscopic sclerosants in the treatment of variceal bleeding, except -

Accepted Answer

Acetic acid

Answer

Alcohol

Answer

Polydochanol

Answer

Cyanoacrylate

Question 7

Which of the following statements about duodenal diverticula is false?

Accepted Answer

Whenever found, should be treated due to increased risk of complications

Answer

Can cause acute pancreatitis

Answer

Most common site is periampullary region

Answer

Most are asymptomatic

Question 8

What is the most common cause of intestinal obstruction?

Accepted Answer

Adhesions

Answer

Ileocaecal tuberculosis

Answer

Carcinoma colon

Answer

Intussusception

Question 9

All are causes of mechanical intestinal obstruction except which of the following?

Accepted Answer

Mesenteric vascular occlusion

Answer

Intussusception

Answer

Bands

Answer

Gall stones

Question 10

Dieulafoy's lesion is seen in what?

Accepted Answer

Stomach

Answer

Jejunum

Answer

Oesophagus

Answer

Anus

Gastrointestinal Surgery — MCQs

Gastrointestinal Surgery — MCQs

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