Hepatobiliary Surgery Practice Questions

Q: All of the following are true about porcelain gallbladder except?

Always denotes benign etiology. **Explanation:** **Porcelain Gallbladder** refers to the extensive intramural calcification of the gallbladder wall. The correct answer is **D** because porcelain gallbladder is historically and clinically associated with an increased risk of **Gallbladder Carcinoma** (GBC). While recent studies suggest the risk may be lower than previously thought (approx. 6%), it is certainly not "always benign." 1. **Why Option D is the correct answer:** The statement is false. Porcelain gallbladder is considered a **premalignant condition**. The calcification often occurs in the setting of chronic cholecystitis, and the associated mucosal irritation or chronic inflammation predisposes the patient to adenocarcinoma. 2. **Why other options are incorrect:** * **Option A:** Calcification of the gallbladder wall is dense enough to be visualized as a radio-opaque, pear-shaped rim in the right upper quadrant on a **plain abdominal X-ray**. * **Option B:** **CT scan** is the most sensitive and specific modality for diagnosis, as it can differentiate between intramural calcification and a lumen filled with stones (WES sign on USG). * **Option C:** Due to the established risk of malignancy, **prophylactic cholecystectomy** is the standard recommendation for patients with porcelain gallbladder, even if they are asymptomatic. **High-Yield Clinical Pearls for NEET-PG:** * **Association:** Strongly associated with gallstones (95% of cases). * **Types:** "Broad-band" or "Complete" calcification is actually associated with a *lower* risk of cancer compared to "stippled" or "incomplete" mucosal calcification. * **Gender:** More common in females (similar to gallstones). * **Management:** Laparoscopic cholecystectomy is preferred unless malignancy is highly suspected, in which case an open approach may be considered.

Q: What is the most common complication of amoebic liver abscess?

Rupture into peritoneal cavity. **Explanation:** Amoebic liver abscess (ALA), caused by *Entamoeba histolytica*, is the most common extra-intestinal manifestation of amoebiasis. While most cases respond well to medical management (Metronidazole), complications arise when the abscess continues to enlarge. **Why Option B is correct:** The **most common complication** of an amoebic liver abscess is **rupture**. Among the various sites of rupture, **rupture into the peritoneal cavity** is the most frequent. This occurs when an abscess, typically located in the right lobe, breaches the liver capsule inferiorly. It presents as sudden-onset acute abdomen (peritonitis) and requires urgent surgical or percutaneous intervention. **Analysis of Incorrect Options:** * **Option A (Pleural cavity):** This is the second most common site of rupture. It occurs when a superiorly located abscess in the right lobe crosses the diaphragm, leading to empyema or a hepatobronchial fistula (characterized by "anchovy sauce" sputum). * **Option B (Pericardial cavity):** This is a rare but the **most serious/fatal** complication. it usually occurs from an abscess in the **left lobe** of the liver. * **Option D (Sepsis):** While secondary bacterial infection can occur, it is less common than rupture in the natural history of an untreated amoebic abscess. **High-Yield Clinical Pearls for NEET-PG:** * **Most common site:** Right lobe (due to the bulk of liver tissue and portal blood flow distribution). * **Classic presentation:** Fever, right upper quadrant pain, and hepatomegaly. * **Investigation of choice:** Ultrasound (shows a hypoechoic lesion); Serology (ELISA) is highly sensitive. * **Aspirate:** Classic **"Anchovy sauce"** appearance (odorless, chocolate-colored pus). * **Treatment:** Metronidazole is the drug of choice; Diloxanide furoate is added to eliminate the luminal cyst stage.

Q: Which cell count increases earliest following splenectomy?

Platelets. The spleen acts as the primary reservoir for blood cells, particularly platelets. Approximately **one-third (30%) of the total body platelet pool** is sequestered within the splenic red pulp at any given time. **Why Platelets are the correct answer:** Immediately following a splenectomy, the sequestration site is removed, leading to a rapid redistribution of these stored platelets into the systemic circulation. This results in an increase in platelet count within **hours** of the procedure. This transient reactive thrombocytosis usually peaks between 7–10 days post-surgery. **Analysis of Incorrect Options:** * **Neutrophils:** While a transient neutrophilic leukocytosis occurs post-splenectomy (due to demargination and stress response), it is generally less pronounced and less immediate than the redistribution of the sequestered platelet pool. * **Lymphocytes & Monocytes:** These cells may show a mild, chronic increase (lymphocytosis and monocytosis) as the spleen is a major lymphoid organ, but these changes occur much later and are not the earliest hematological finding. **High-Yield Clinical Pearls for NEET-PG:** 1. **Post-Splenectomy Blood Picture:** Look for **Howell-Jolly bodies** (nuclear remnants), **Pappenheimer bodies** (iron granules), **Heinz bodies** (denatured hemoglobin), and **Target cells**. 2. **Infections:** Patients are at lifelong risk of **OPSI (Overwhelming Post-Splenectomy Infection)**, primarily from encapsulated organisms: *Streptococcus pneumoniae* (most common), *Haemophilus influenzae*, and *Neisseria meningitidis*. 3. **Vaccination Protocol:** Ideally, vaccines should be administered **2 weeks before** elective surgery or **2 weeks after** emergency surgery to ensure optimal immune response.

Q: Which of the following is NOT a risk factor for developing cholangiocarcinoma?

Working in the rubber industry. **Explanation:** Cholangiocarcinoma (CCA) is a malignancy arising from the biliary epithelium [1]. The primary pathophysiology involves **chronic inflammation** and cholestasis, which lead to DNA damage and malignant transformation of cholangiocytes. **Why Option D is the Correct Answer:** Working in the **rubber industry** is a well-established risk factor for **Bladder Cancer** (due to exposure to aromatic amines like benzidine) and certain leukemias, but it is **not** associated with cholangiocarcinoma. In contrast, the chemical industry exposure specifically linked to cholangiocarcinoma is the **aircraft and PVC industry** (exposure to 1,2-dichloropropane and dichloromethane). **Analysis of Incorrect Options:** * **Choledochal Cyst (Option A):** These congenital cystic dilatations of the bile duct cause bile stasis and chronic inflammation. The risk of malignancy is as high as 10-15%, necessitating surgical excision. * **Cholelithiasis (Option B):** While gallstones are primarily a risk factor for **Gallbladder Cancer**, large or long-standing stones in the biliary tree (especially hepatolithiasis/intrahepatic stones) cause chronic mucosal irritation, significantly increasing the risk of cholangiocarcinoma [1]. * **Liver Flukes (Option C):** Infection with *Opisthorchis viverrini* and *Clonorchis sinensis* (common in SE Asia) is a classic, high-yield risk factor. These parasites reside in the bile ducts, causing chronic mechanical injury and inflammation [1]. **NEET-PG High-Yield Pearls:** * **Most common risk factor (Worldwide):** Primary Sclerosing Cholangitis (PSC). * **Tumor Marker:** CA 19-9 is commonly elevated (also seen in pancreatic cancer). * **Klatskin Tumor:** A hilar cholangiocarcinoma occurring at the confluence of the right and left hepatic ducts [1]. * **Thorotrast:** A historical radiocontrast agent strongly linked to both cholangiocarcinoma and hepatic angiosarcoma.

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.

Question 1

All of the following are true about porcelain gallbladder except?

Accepted Answer

Always denotes benign etiology

Answer

May be seen on plain X-ray

Answer

More commonly diagnosed on CT

Answer

It is an indication for cholecystectomy

Question 2

What is the most common complication of amoebic liver abscess?

Accepted Answer

Rupture into peritoneal cavity

Answer

Rupture into pleural cavity

Answer

Rupture into pericardial cavity

Answer

Sepsis

Question 3

What condition is associated with Boa's sign?

Accepted Answer

Acute cholecystitis

Answer

Acute cholangitis

Answer

Mirizzi syndrome

Answer

Primary sclerosing cholangitis

Question 4

Which of the following is an exception to Courvoisier's law?

Accepted Answer

Primary oriental cholangiohepatitis causing stones in the CBD

Answer

Cancer of the ampulla

Answer

Cancer of the pancreas

Answer

Cancer of the bile duct

Question 5

Which cell count increases earliest following splenectomy?

Accepted Answer

Platelets

Answer

Lymphocytes

Answer

Monocytes

Answer

Neutrophils

Question 6

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 7

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 8

Post-splenectomy, which of the following infections is not common?

Accepted Answer

Disseminated herpes zoster

Answer

Pneumococcus

Answer

H. influenzae

Answer

Salmonella

Question 9

Which of the following is NOT a risk factor for developing cholangiocarcinoma?

Accepted Answer

Working in the rubber industry

Answer

Choledochal cyst

Answer

Cholelithiasis

Answer

Liver flukes

Question 10

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

Hepatobiliary Surgery — MCQs

Hepatobiliary Surgery — MCQs

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