Hepatobiliary Surgery Practice Questions

Q: What is the most likely cause of intermittent jaundice in an elderly man?

Perampullary carcinoma. **Explanation:** The hallmark of **Periampullary Carcinoma** (specifically the ampullary subtype) is **intermittent jaundice**. This occurs due to the unique phenomenon of **"tumor sloughing."** As the tumor grows, it obstructs the common bile duct (CBD), causing jaundice. However, because these tumors are often friable, the central necrotic part of the tumor may slough off or undergo surface ulceration, temporarily relieving the obstruction and allowing bile to flow. This results in a characteristic waxing and waning of bilirubin levels. **Analysis of Options:** * **Carcinoma of the head of the pancreas:** Typically presents with **progressive, painless, and persistent** obstructive jaundice. Unlike ampullary tumors, pancreatic head tumors rarely slough enough to relieve obstruction. * **Liver cirrhosis:** Usually presents with chronic jaundice associated with signs of portal hypertension (ascites, splenomegaly). It is not typically "intermittent" in the obstructive sense. * **Hemolysis:** Causes pre-hepatic jaundice (unconjugated hyperbilirubinemia). While it can be episodic (e.g., G6PD deficiency crisis), it is not the most likely cause in an elderly man presenting with a surgical jaundice profile. **NEET-PG High-Yield Pearls:** 1. **Courvoisier’s Law:** In a patient with obstructive jaundice, if the gallbladder is palpable, the obstruction is unlikely to be a stone (as stones cause a fibrotic, non-distensible gallbladder). It suggests malignancy (e.g., Periampullary or Pancreatic head CA). 2. **Silver Stool (Thomas’s Sign):** A classic (though rare) sign of ampullary carcinoma, caused by the combination of acholic stool (biliary obstruction) and occult blood/melena (from the sloughing tumor). 3. **Triple Assessment:** For these cases, the investigation of choice is **CECT abdomen**, followed by **ERCP/EUS** for biopsy and staging.

Q: Murphy sign is seen in:

Acute cholecystitis. **Explanation:** **Murphy’s Sign** is a classic clinical finding used to diagnose **Acute Cholecystitis**. It is elicited by asking the patient to take a deep breath while the examiner applies pressure over the right upper quadrant (specifically at the gallbladder point, where the lateral border of the rectus abdominis meets the costal margin). As the diaphragm descends during inspiration, the inflamed gallbladder comes into contact with the examiner’s fingers, causing sharp pain and a sudden **"arrest of inspiration."** **Analysis of Options:** * **Acute Cholecystitis (Correct):** The inflammation of the gallbladder wall makes it exquisitely sensitive to palpation when it hits the abdominal wall during inspiration. * **Acute Appendicitis:** Characterized by McBurney’s point tenderness, Rovsing’s sign, or the Psoas sign. Murphy’s sign is not associated with the appendix. * **Acute Pancreatitis:** Typically presents with epigastric pain radiating to the back. Clinical signs include Cullen’s or Grey Turner’s sign (in hemorrhagic cases), but not Murphy’s sign. * **Acute Cholangitis:** Presents with **Charcot’s Triad** (fever, jaundice, and RUQ pain). While RUQ pain is present, the specific "inspiratory arrest" of Murphy's sign is specific to gallbladder inflammation, not bile duct infection. **High-Yield Clinical Pearls for NEET-PG:** * **Sonographic Murphy Sign:** Elicited by pressure from the ultrasound probe directly over the gallbladder; it is more sensitive than the manual physical exam. * **Boas' Sign:** Hyperesthesia (increased sensitivity) between the 9th and 11th ribs posteriorly on the right side, also seen in acute cholecystitis. * **False Positives:** Murphy’s sign may be absent in the elderly or in patients with gangrenous cholecystitis due to nerve denervation.

Q: Which of the following is a selective shunt?

Warren shunt. **Explanation:** The goal of surgical shunts in portal hypertension is to reduce portal pressure and prevent variceal bleeding. Shunts are classified into **Non-selective**, **Partial**, and **Selective**. **1. Why the Correct Answer is Right:** The **Warren shunt (Distal Splenorenal Shunt)** is the classic example of a **selective shunt**. It involves anastomosing the distal end of the splenic vein to the left renal vein while ligating the short gastric and gastroepiploic veins. This selectively decompresses the gastroesophageal varices (the "gastrosplenic circuit") while maintaining high-pressure portal venous flow to the liver (prograde flow). This preservation of portal perfusion significantly reduces the risk of hepatic encephalopathy compared to non-selective shunts. **2. Why the Incorrect Options are Wrong:** * **Proximal Splenorenal Shunt (Linton Shunt):** This is a **non-selective shunt**. It involves a splenectomy and anastomosing the proximal end of the splenic vein to the renal vein. Because the entire portal system is decompressed, it diverts blood away from the liver. * **Side-to-side Portasystemic Shunt:** This is a **non-selective shunt**. It connects the portal vein directly to the inferior vena cava (IVC). It is highly effective at reducing pressure but carries a high risk of encephalopathy. * **Mesocaval Shunt:** This is a **non-selective shunt** (unless a small-diameter prosthetic graft is used, making it "partial"). It connects the superior mesenteric vein to the IVC. **Clinical Pearls for NEET-PG:** * **Warren Shunt Contraindication:** It should not be performed in patients with **ascites**, as it does not decompress the mesenteric venous system, potentially worsening the ascites. * **TIPS (Transjugular Intrahepatic Portosystemic Shunt):** Functionally acts as a side-to-side (non-selective) shunt. * **Most common complication** of non-selective shunts: Hepatic Encephalopathy.

Q: According to Child-Pugh criteria, what does the presence of hepatic encephalopathy, a bilirubin level of 2.5 mg/dL, an albumin level of 3 gm/dL, and controlled ascites indicate?

Grade B. The **Child-Pugh Score** (or Child-Turcotte-Pugh) is a vital clinical tool used to assess the prognosis of chronic liver disease and cirrhosis. It evaluates five parameters: Bilirubin, Albumin, PT/INR, Ascites, and Encephalopathy [1]. ### **Step-by-Step Scoring for the Question:** 1. **Encephalopathy:** Presence (Grade 1-2) = **2 points**. 2. **Bilirubin (2.5 mg/dL):** Range 2–3 mg/dL = **2 points**. 3. **Albumin (3.0 gm/dL):** Range 2.8–3.5 gm/dL = **2 points**. 4. **Ascites:** Controlled (Slight/Mild) = **2 points**. 5. **PT/INR:** Not provided, but assuming a baseline of 1 point (normal). **Total Score:** 2 + 2 + 2 + 2 + 1 = **9 points**. ### **Classification:** * **Grade A (5–6 points):** Well-compensated disease. * **Grade B (7–9 points):** Significant functional impairment. **(Correct Answer)** * **Grade C (10–15 points):** Decompensated disease. ### **Why Other Options are Wrong:** * **Option A (Grade A):** Requires a score of 5–6. The patient already exceeds this due to the presence of encephalopathy and elevated bilirubin. * **Option B (Grade C):** Requires a score of 10 or more. This patient’s parameters are moderately deranged but not yet at the severe threshold. * **Option D:** While INR is missing, the four provided parameters already sum to 8 points, placing the patient firmly in Grade B regardless of whether the INR is 1 or 2 points. ### **High-Yield NEET-PG Pearls:** * **Mnemonic for Parameters:** **"ABCDE"** (**A**lbumin, **B**ilirubin, **C**oagulation [INR], **D**istension [Ascites], **E**ncephalopathy). * **Surgical Significance:** Grade A patients are generally safe for major surgery; Grade B requires caution; Grade C is a contraindication for non-transplant surgery. * **Bilirubin Exception:** In Primary Biliary Cholangitis (PBC), the bilirubin cut-offs are higher (1–4 mg/dL for 2 points; >10 mg/dL for 3 points).

Q: All of the following are true about brown pigment gall stones except?

More common in Western countries.. **Explanation:** Brown pigment stones are a specific subtype of gallstones primarily associated with **stasis and infection** within the biliary tree. **1. Why Option B is the correct answer (The False Statement):** Brown pigment stones are **more common in Asian countries** (the East) rather than Western countries. In Western populations, cholesterol stones are the most prevalent (approx. 80%), followed by black pigment stones (associated with hemolysis). Brown stones are typically "primary" stones, meaning they often form within the bile ducts (CBD) rather than the gallbladder, especially in the context of parasitic infections or biliary stasis common in Southeast Asia. **2. Analysis of other options:** * **Option A (E. coli):** True. Bacterial infection is a hallmark of brown stone formation. Bacteria like *E. coli* and *Klebsiella* produce the enzyme **beta-glucuronidase**, which deconjugates bilirubin diglucuronide into free unconjugated bilirubin, leading to precipitation. * **Option C (Clonorchis sinensis):** True. Parasitic infestations (e.g., *Clonorchis sinensis*, *Ascaris lumbricoides*) cause chronic inflammation and ductal stasis, providing a nidus for brown stone formation. * **Option D (Composition):** True. They consist of **calcium bilirubinate** (unconjugated), calcium palmitate, and cholesterol. Unlike black stones, they have a higher proportion of cholesterol and protein. **Clinical Pearls for NEET-PG:** * **Location:** Brown stones are usually **primary CBD stones**; Black stones are usually **gallbladder stones**. * **Radiology:** Brown stones are typically **radiolucent** (unlike 10-20% of cholesterol stones or many black stones which may be radiopaque). * **Texture:** They are soft, greasy, and earthy in consistency. * **Key Enzyme:** **Beta-glucuronidase** is the most important factor in their pathogenesis.

Q: What is the investigation of choice in obstructive jaundice?

USG. **Explanation:** In the diagnostic workup of obstructive jaundice, **Ultrasonography (USG)** is the **initial investigation of choice**. Its primary role is to differentiate between medical (intrahepatic) and surgical (extrahepatic) jaundice. USG is highly sensitive in detecting **biliary radical dilatation** (the hallmark of obstruction), identifying the level of obstruction, and detecting gallstones or pancreatic masses. It is preferred because it is non-invasive, radiation-free, inexpensive, and widely available. **Analysis of Options:** * **ERCP (Endoscopic Retrograde Cholangiopancreatography):** While ERCP was once the gold standard, it is now primarily a **therapeutic** tool (for stenting or stone extraction). It is invasive and carries risks like pancreatitis. **MRCP** has replaced it as the diagnostic gold standard for visualizing the biliary tree. * **Cholecystography:** This is an obsolete investigation. It requires a functioning gallbladder to concentrate dye and is ineffective in the presence of jaundice (bilirubin >2 mg/dL), as the liver cannot excrete the contrast. * **Laparoscopy:** This is an invasive surgical procedure. While it can be used for staging malignancies (Diagnostic Laparoscopy), it is never the first-line investigation for jaundice. **High-Yield Clinical Pearls for NEET-PG:** * **Initial Investigation:** USG Abdomen. * **Gold Standard (Diagnostic):** MRCP (Non-invasive, visualizes the entire biliary tree). * **Gold Standard (Therapeutic):** ERCP. * **Best for Distal CBD/Periampullary lesions:** Endoscopic Ultrasound (EUS). * **Courvoisier’s Law:** In a patient with obstructive jaundice, if the gallbladder is palpable, the obstruction is likely due to malignancy (e.g., Periampullary CA) rather than stones, as stone disease causes a fibrosed, non-distensible gallbladder.

Question 1

What is the most likely cause of intermittent jaundice in an elderly man?

Accepted Answer

Perampullary carcinoma

Answer

Liver cirrhosis

Answer

Carcinoma of the head of the pancreas

Answer

Hemolysis

Question 2

Which of the following can cause acalculous cholecystitis?

Accepted Answer

Diabetes Mellitus

Answer

Total Parenteral Nutrition

Answer

Leptospirosis

Answer

Estrogen therapy

Question 3

Murphy sign is seen in:

Accepted Answer

Acute cholecystitis

Answer

Acute appendicitis

Answer

Acute pancreatitis

Answer

Acute cholangitis

Question 4

All of the following are criteria of non-resectability in patients with hilar cholangiocarcinoma, except?

Accepted Answer

Atrophy of one lobe with ipsilateral involvement of secondary biliary radicals

Answer

Hepatic duct involvement up to secondary radicals bilaterally

Answer

Encasement or occlusion of main portal vein proximal to its bifurcation

Answer

Atrophy of one lobe with encasement of contralateral portal vein branch

Question 5

Regarding bile duct injuries following cholecystectomy, which of the following statements is false?

Accepted Answer

Routine use of 'open' technique of laparoscopic port insertion has resulted in a decline in the incidence of post-laparoscopic cholecystectomy bile duct injuries.

Answer

The incidence following open cholecystectomy is in the range of 0.2 to 0.3%.

Answer

The incidence rate following laparoscopic cholecystectomy is three times higher than the rates following open cholecystectomy.

Answer

Untreated cases may develop secondary biliary cirrhosis.

Question 6

All of the following are true about the hydatid disease of the liver, EXCEPT:

Accepted Answer

Hepatic resection is never performed

Answer

Most commonly located in the right lobe of the liver

Answer

Mostly asymptomatic

Answer

The most common causative organism is Echinococcus granulosus

Question 7

Which of the following is a selective shunt?

Accepted Answer

Warren shunt

Answer

Proximal splenorenal shunt

Answer

Side-to-side portasystemic shunt

Answer

Mesocaval shunt

Question 8

According to Child-Pugh criteria, what does the presence of hepatic encephalopathy, a bilirubin level of 2.5 mg/dL, an albumin level of 3 gm/dL, and controlled ascites indicate?

Accepted Answer

Grade B

Answer

Grade A

Answer

Grade C

Answer

More information needed

Question 9

All of the following are true about brown pigment gall stones except?

Accepted Answer

More common in Western countries.

Answer

They may occur due to infection with E. coli.

Answer

May be associated with Clonorchis sinensis infestation.

Answer

They are composed of calcium salts of unconjugated bilirubin with varying amounts of cholesterol and protein.

Question 10

What is the investigation of choice in obstructive jaundice?

Accepted Answer

USG

Answer

ERCP

Answer

Cholecystography

Answer

Laparoscopy

Hepatobiliary Surgery — MCQs

Hepatobiliary Surgery — MCQs

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