Hepatobiliary Surgery Practice Questions

Q: What is the most common cause of isolated gastric varices?

Splenic vein thrombosis. **Explanation:** The presence of **isolated gastric varices (IGV)** in the absence of esophageal varices is a classic clinical hallmark of **left-sided (sinistral) portal hypertension**. **1. Why Splenic Vein Thrombosis (SVT) is correct:** The splenic vein drains the spleen and receives blood from the short gastric veins. When the splenic vein is obstructed (most commonly due to **chronic pancreatitis**, pancreatic pseudocysts, or pancreatic tumors), blood is diverted through the **short gastric veins** into the submucosal veins of the gastric fundus to reach the portal system. This increased pressure leads to the formation of isolated gastric varices. Unlike generalized portal hypertension (cirrhosis), the pressure in the rest of the portal system remains normal, which is why esophageal varices are typically absent. **2. Analysis of Incorrect Options:** * **Option A (Profuse bleeding):** While gastric varices can bleed more severely than esophageal varices, "profuse bleeding" is a clinical presentation/complication, not a cause. * **Option C (EUS vs. Endoscopy):** This is a diagnostic comparison. While EUS is highly sensitive for detecting underlying vessels, it is not a "cause" of the condition. * **Option D (Single treatment):** This is a statement regarding management (often involving cyanoacrylate glue or splenectomy). It does not address the etiology. **High-Yield Pearls for NEET-PG:** * **Most common cause of SVT:** Chronic Pancreatitis. * **Definitive Treatment:** Splenectomy is curative for IGV caused by SVT. * **Classification:** Gastric varices are classified by the **Sarin Classification** (IGV Type 1 are located in the fundus). * **Medical Management:** Endoscopic injection of **N-butyl-2-cyanoacrylate** (glue) is the preferred endoscopic intervention for bleeding gastric varices.

Q: Which of the following statements is not true regarding Milan's criteria?

Fewer than 5 nodules. **Explanation:** The **Milan Criteria** are the gold standard guidelines used to determine the eligibility of patients with Hepatocellular Carcinoma (HCC) for **Orthotopic Liver Transplantation (OLT)**. These criteria were established to select patients who would achieve post-transplant survival rates comparable to those transplanted for non-malignant conditions. **Why Option C is the correct answer (Not True):** The Milan Criteria do not allow for "fewer than 5 nodules." The criteria strictly limit the number of tumors to a **maximum of three** if they are small. Any patient with four or more nodules falls outside the Milan Criteria, regardless of the size of the nodules. **Analysis of Incorrect Options (True Statements):** * **Option A (Single tumor <5 cm):** This is the primary criterion for solitary lesions. A single HCC up to 5 cm in diameter is considered within the "Milan-in" zone. * **Option B (Up to 3 nodules, each <3 cm):** For multifocal disease, the criteria allow for a maximum of 3 nodules, provided none exceed 3 cm in diameter. * **Option D (No extrahepatic spread):** This is a mandatory requirement. The presence of extrahepatic metastasis or **macrovascular invasion** (e.g., portal vein thrombosis) is an absolute contraindication for transplantation under these criteria. **High-Yield Clinical Pearls for NEET-PG:** * **UCSF Criteria:** An expansion of Milan, allowing a single lesion up to 6.5 cm or 2–3 lesions up to 4.5 cm (total diameter ≤8 cm). * **Bridging Therapy:** While waiting for a transplant, patients within Milan criteria often undergo TACE or RFA to prevent "dropout" due to tumor progression. * **Survival:** Patients meeting Milan criteria have a 5-year survival rate exceeding 70% post-transplant.

Q: Denver shunt is used in which condition?

Ascites. **Explanation:** The **Denver shunt** is a type of **peritoneovenous shunt (PVS)** specifically designed for the management of **refractory ascites**. **1. Why Ascites is Correct:** In patients with intractable ascites (often due to cirrhosis or malignancy), fluid accumulates in the peritoneal cavity. The Denver shunt consists of a catheter with a **pressure-sensitive one-way valve** and a small subcutaneous pump chamber. It is surgically implanted to divert ascitic fluid from the peritoneum into the internal jugular vein or superior vena cava. Unlike the LeVeen shunt (which is passive), the Denver shunt allows for manual pumping to clear debris and maintain patency. **2. Why Other Options are Incorrect:** * **Dialysis:** Dialysis utilizes an Arteriovenous (AV) fistula or a peritoneal dialysis (PD) catheter (e.g., Tenckhoff catheter), not a Denver shunt. * **Raised ICP (Intracranial Pressure):** This is managed using a **Ventriculoperitoneal (VP) shunt**, which moves CSF from the brain to the peritoneum. * **Raised IOP (Intraocular Pressure):** Glaucoma is managed with topical medications, laser trabeculoplasty, or surgical shunts like the Ahmed Glaucoma Valve, but not a Denver shunt. **Clinical Pearls for NEET-PG:** * **LeVeen vs. Denver:** Both are peritoneovenous shunts. The Denver shunt is preferred by some because its manual pump helps prevent clogging by fibrin. * **Complications:** The most serious complication of these shunts is **Disseminated Intravascular Coagulation (DIC)**, caused by the sudden infusion of ascitic clotting factors into the systemic circulation. Other risks include fluid overload and shunt infection. * **Current Status:** Due to high complication rates and the advent of **TIPS (Transjugular Intrahepatic Portosystemic Shunt)**, Denver shunts are now primarily reserved for malignant ascites where TIPS is not feasible.

Q: All are true about hepatic adenoma except?

Hepatic architecture is maintained.. **Explanation:** **Hepatic Adenoma (HA)** is a benign, solid neoplasm of the liver primarily seen in young women with a history of oral contraceptive pill (OCP) use. **1. Why Option B is the Correct Answer (The False Statement):** In Hepatic Adenoma, the **normal hepatic architecture is NOT maintained**. Histologically, it consists of sheets of hepatocytes without the presence of normal portal tracts, bile ducts, or a central venous system. This lack of supporting structure makes the lesion prone to hemorrhage. In contrast, Focal Nodular Hyperplasia (FNH) maintains a more organized (though abnormal) architecture with a central stellate scar. **2. Analysis of Other Options:** * **Option A:** It is indeed a **benign proliferative disorder** of hepatocytes, often linked to hormonal stimulation (estrogen) or anabolic steroids. * **Option C:** On CECT, HA typically shows **peripheral hypervascularization** with centripetal filling during the arterial phase. They are hyperenhancing because they are supplied by unpaired arteries. * **Option D:** **Excision is the treatment of choice** for symptomatic lesions, lesions >5 cm, or those in males, due to the high risk of spontaneous rupture (leading to hemoperitoneum) and a small but significant risk of malignant transformation to Hepatocellular Carcinoma (HCC). **High-Yield Clinical Pearls for NEET-PG:** * **Risk Factors:** OCP use (most common), Anabolic steroids, Glycogen storage diseases (Type I and III). * **Subtypes:** HNF-1α inactivated (low risk), Inflammatory (most common, high bleed risk), and **β-catenin activated** (highest risk of malignancy). * **Imaging:** "Cold" on sulfur colloid scan (due to lack of Kupffer cells), unlike FNH which is "hot" or "isointense." * **Management:** Stop OCPs first; if >5cm or persistent, proceed to surgical resection.

Q: Which of the following is NOT a curative treatment modality for hepatocellular carcinoma?

Transarterial Chemoembolization (TACE). **Explanation:** In the management of Hepatocellular Carcinoma (HCC), treatment modalities are classified into **Curative** (aiming for complete eradication) and **Palliative** (aiming to control growth and prolong survival). **Why TACE is the correct answer:** **Transarterial Chemoembolization (TACE)** is considered a **palliative** treatment. It involves the delivery of chemotherapeutic agents directly into the hepatic artery followed by embolization to induce ischemic necrosis. While it is the standard of care for intermediate-stage HCC (BCLC Stage B), it is not curative because it rarely achieves complete pathological necrosis of the entire tumor volume. **Why the other options are incorrect:** * **Resection (Option D):** This is the gold standard curative treatment for patients with solitary tumors and preserved liver function (Child-Pugh A) without portal hypertension. * **Radiofrequency Ablation (RFA) (Option B):** A curative thermal ablative technique. For tumors <3 cm, RFA achieves survival rates comparable to surgical resection. * **Percutaneous Ethanol Injection (PEI) (Option C):** A curative chemical ablative technique. Though largely replaced by RFA, it remains an effective curative option for small tumors, especially when located near major vessels where RFA might cause a "heat-sink" effect. **Clinical Pearls for NEET-PG:** * **Milan Criteria:** Used to select HCC patients for **Liver Transplantation** (the ultimate curative treatment): Solitary nodule ≤5 cm or up to 3 nodules each ≤3 cm. * **BCLC Staging:** The most widely used system for HCC management. * **Sorafenib:** A multi-kinase inhibitor used as first-line systemic therapy for advanced, non-resectable HCC. * **Fibrolamellar HCC:** Occurs in young adults without cirrhosis; has a better prognosis and normal AFP levels.

Q: By definition, pigment stones contain what percentage of cholesterol?

70% cholesterol by weight. * **Mixed Stones:** Contain 30% to 70% cholesterol. * **Pigment Stones:** By definition, these contain **less than 30% cholesterol**. They are primarily composed of calcium bilirubinate, polymers of bilirubin, and inorganic calcium salts. **2. Analysis of Incorrect Options:** * **<10% (Option A):** While some "pure" pigment stones may have very low cholesterol, the formal diagnostic threshold for the category is higher. * **<20% (Option B):** This is an incorrect threshold; 30% is the internationally recognized cut-off for distinguishing pigment from mixed stones. * **<60% (Option D):** This range would include "Mixed stones" (30-70%), which are pathophysiologically distinct from true pigment stones. **3. NEET-PG High-Yield Clinical Pearls:** * **Black Pigment Stones:** Associated with **chronic hemolysis** (e.g., Hereditary Spherocytosis, Sickle Cell Anemia) and Cirrhosis. They are usually found in the gallbladder. * **Brown Pigment Stones:** Associated with **biliary stasis and infection** (e.g., *E. coli*, *Clonorchis sinensis*). They often form *de novo* in the bile ducts. * **Radiopacity:** Most pigment stones (especially black) are **radiopaque** (visible on X-ray) due to calcium salts, whereas pure cholesterol stones are radiolucent. * **Enzyme Link:** Brown stones form due to the action of bacterial **beta-glucuronidase**, which deconjugates bilirubin.

Q: What is the true color of a cholesterol gallstone?

Pale yellow. **Explanation:** Gallstones are primarily classified based on their chemical composition into cholesterol stones and pigment stones. **1. Why Pale Yellow is Correct:** Pure cholesterol stones are composed of over 50-70% crystalline cholesterol monohydrate. In its pure form, cholesterol is a **pale yellow** or whitish-yellow substance. These stones are typically large, solitary, and have a smooth or finely granular surface. They form when bile becomes supersaturated with cholesterol (lithogenic bile), leading to nucleation and stone growth. **2. Why Other Options are Incorrect:** * **Black (Option A):** These are **Black Pigment Stones**, composed of calcium bilirubinate and polymers. They are associated with chronic hemolysis (e.g., Hereditary Spherocytosis, Sickle Cell Anemia) and cirrhosis. They are typically small, multiple, and radiopaque. * **Brown (Option B):** These are **Brown Pigment Stones**, associated with **biliary stasis and infection** (e.g., *E. coli*, *Clonorchis sinensis*). They contain calcium salts of unconjugated bilirubin and fatty acids. They are soft, greasy, and often form within the bile ducts (primary CBD stones). * **Dark Yellow (Option C):** While mixed stones (the most common type) can appear darker due to the inclusion of calcium salts and bile pigments, the "true" or "pure" cholesterol stone is characterized by its pale, crystalline appearance. **Clinical Pearls for NEET-PG:** * **Most common type of stone:** Mixed stones (contain cholesterol, bile pigments, and calcium). * **Radiopacity:** 80-90% of cholesterol stones are **radiolucent** (cannot be seen on X-ray). Black pigment stones are the most radiopaque. * **Risk Factors:** Remember the **5 F's**: Fat, Female, Fertile, Forty, and Fair. * **Investigation of Choice:** Transabdominal Ultrasonography (USG) is the gold standard for diagnosis.

Q: A 50-year-old patient presents with bile leakage from the mid-clavicular port site on the first post-operative day after laparoscopic cholecystectomy. An abdominal ultrasound has been performed. What is the most appropriate next step in the management of this patient?

Endoscopic retrograde cholangiopancreatography (ERCP) with stenting. **Explanation:** The clinical presentation of bile leakage through a port site following laparoscopic cholecystectomy suggests a post-operative biliary leak, most commonly arising from the **Cystic Duct Stump** or a minor **Duct of Luschka**. **1. Why ERCP with Stenting is the Correct Choice:** The primary goal in managing a bile leak is to decrease the pressure gradient across the Sphincter of Oddi. **ERCP with biliary stenting (with or without sphincterotomy)** achieves this by providing a low-resistance pathway for bile to flow into the duodenum. This promotes the spontaneous closure of the leak site. Since the patient is stable and an ultrasound has likely ruled out major collections or complete transection, ERCP is both diagnostic (identifies the site) and therapeutic. **2. Why Other Options are Incorrect:** * **Laparoscopic exploration:** This is generally reserved for patients with generalized peritonitis, complete bile duct transection, or when endoscopic/radiological interventions fail. * **Observation:** Bile leaks rarely resolve spontaneously without intervention and can lead to biliary peritonitis or intra-abdominal collections if left untreated. * **Percutaneous drainage:** While useful for draining localized collections (bilomas), it does not address the underlying pressure gradient causing the leak. **Clinical Pearls for NEET-PG:** * **Most common site of post-cholecystectomy bile leak:** Cystic duct stump. * **Strasberg Classification:** Used to grade bile duct injuries (Type A is a leak from the cystic duct or Luschka duct). * **Initial Investigation of Choice:** Ultrasound (to look for collections). * **Gold Standard/Definitive Management for minor leaks:** ERCP. * **Major Duct Injury (Transection):** Requires surgical reconstruction (Roux-en-Y Hepaticojejunostomy).

Question 1

What is the most common cause of isolated gastric varices?

Accepted Answer

Splenic vein thrombosis

Answer

Profuse bleeding

Answer

Endoscopic ultrasound (EUS) is better than endoscopy

Answer

A single treatment can lead to eradication

Question 2

Which of the following statements is not true regarding Milan's criteria?

Accepted Answer

Fewer than 5 nodules

Answer

Single tumor <5 cm in size

Answer

Up to 3 nodules, each <3 cm in size

Answer

No extrahepatic spread

Question 3

Denver shunt is used in which condition?

Accepted Answer

Ascites

Answer

Dialysis

Answer

Raised ICP

Answer

Raised IOP

Question 4

Splenectomy can be curative in all of the following conditions except:

Accepted Answer

Sickle cell disease

Answer

Spleen vein thrombosis

Answer

Hereditary spherocytosis

Answer

Immune thrombocytopenic purpura (ITP)

Question 5

All are true about hepatic adenoma except?

Accepted Answer

Hepatic architecture is maintained.

Answer

Benign proliferative disorder of hepatocytes.

Answer

CECT shows peripheral hypervascularization.

Answer

Treatment is excision.

Question 6

Which of the following is NOT a curative treatment modality for hepatocellular carcinoma?

Accepted Answer

Transarterial Chemoembolization (TACE)

Answer

Radiofrequency ablation

Answer

Percutaneous Ethanol Injection

Answer

Resection

Question 7

Which of the following statements regarding gallbladder dilatation is FALSE?

Accepted Answer

Dilatation of the gallbladder with jaundice is typically due to gallstones.

Answer

Dilatation of the gallbladder with jaundice is unlikely from gallstones.

Answer

Dilatation of a gallbladder with jaundice can be due to periampullary carcinoma.

Answer

Dilatation of the gallbladder may be present in Mirizzi syndrome.

Question 8

By definition, pigment stones contain what percentage of cholesterol?

Accepted Answer

<30%

Answer

<10%

Answer

<20%

Answer

<60%

Question 9

What is the true color of a cholesterol gallstone?

Accepted Answer

Pale yellow

Answer

Black

Answer

Brown

Answer

Dark yellow

Question 10

A 50-year-old patient presents with bile leakage from the mid-clavicular port site on the first post-operative day after laparoscopic cholecystectomy. An abdominal ultrasound has been performed. What is the most appropriate next step in the management of this patient?

Accepted Answer

Endoscopic retrograde cholangiopancreatography (ERCP) with stenting

Answer

Laparoscopic exploration and repair

Answer

Observation

Answer

Percutaneous drainage and stent placement

Hepatobiliary Surgery — MCQs

Hepatobiliary Surgery — MCQs

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