Hepatobiliary Surgery — MCQs

Hepatobiliary Surgery Indian Medical PG Practice Questions and MCQs

Question 481: Which of the following is FALSE regarding hepatic adenoma?

A. It is a benign lesion.
B. It is associated with oral contraceptive pill (OCP) use.
C. It is more common in older females. (Correct Answer)
D. It is typically cold on isotope scan.

Explanation: **Explanation:** Hepatic Adenoma (HA) is a benign liver tumor primarily seen in **young women of childbearing age (20–40 years)**. The statement that it is more common in older females is **false**, making it the correct answer. **1. Why Option C is False:** The epidemiology of hepatic adenoma is strongly linked to hormonal influence. It occurs almost exclusively in young females due to the high prevalence of estrogen exposure. In older, post-menopausal women, the incidence drops significantly unless there is exogenous hormone replacement. **2. Analysis of Other Options:** * **Option A (Benign lesion):** Correct. It is a benign proliferation of hepatocytes without bile ducts or Kupffer cells. However, it carries a risk of malignant transformation to Hepatocellular Carcinoma (HCC), especially the β-catenin mutated subtype. * **Option B (Associated with OCP use):** Correct. There is a strong dose-dependent and duration-dependent relationship between OCP use and the development of adenomas. Regression often occurs upon discontinuation of the pill. * **Option C (Cold on isotope scan):** Correct. Hepatic adenomas lack normal Kupffer cells. Therefore, on a **Technetium-99m sulfur colloid scan**, they do not take up the isotope and appear as "cold" spots. This helps differentiate them from Focal Nodular Hyperplasia (FNH), which usually appears "hot" or "isointense." **High-Yield Clinical Pearls for NEET-PG:** * **Risk of Rupture:** Large adenomas (>5 cm) have a high risk of spontaneous rupture and intraperitoneal hemorrhage, especially during pregnancy. * **Management:** Asymptomatic small lesions (<5 cm) are managed by stopping OCPs. Large lesions (>5 cm) or those in males (high malignancy risk) require surgical resection. * **Key Associations:** OCP use, Anabolic steroids, and Glycogen Storage Disease (Type I and III). * **Imaging:** "Stealth lesion" on non-contrast CT; classic "cold" scan on sulfur colloid.

Question 482: Which of the following clinical situations is associated with an increase in predominantly conjugated ("direct") bilirubin?

A. Physiologic jaundice of the neonate
B. Kernicterus following Rhesus incompatibility
C. Gilbert's Syndrome
D. Pancreatic head tumor (Correct Answer)

Explanation: ### **Explanation** The correct answer is **D. Pancreatic head tumor.** **1. Why Pancreatic Head Tumor is Correct:** Hyperbilirubinemia is classified into unconjugated (pre-hepatic) and conjugated (post-hepatic/obstructive). A tumor in the head of the pancreas causes **obstructive jaundice** by compressing the distal common bile duct (CBD). In this scenario, the liver successfully conjugates bilirubin, but the physical obstruction prevents its excretion into the duodenum. Consequently, **conjugated (direct) bilirubin** refluxes into the bloodstream. This is typically associated with pale stools, dark urine, and pruritus. **2. Why the Other Options are Incorrect:** * **A. Physiologic jaundice of the neonate:** Caused by the immaturity of the enzyme *UDP-glucuronosyltransferase (UGT1A1)* and increased RBC breakdown, leading to a rise in **unconjugated** bilirubin. * **B. Kernicterus following Rhesus incompatibility:** Rhesus incompatibility causes massive hemolysis. This overwhelms the liver's conjugating capacity, resulting in high levels of **unconjugated** bilirubin, which is lipid-soluble and crosses the blood-brain barrier to cause brain damage (kernicterus). * **C. Gilbert’s Syndrome:** A common genetic condition characterized by reduced activity of the *UGT1A1* enzyme. It results in mild, isolated **unconjugated** hyperbilirubinemia, often triggered by stress or fasting. **3. NEET-PG High-Yield Pearls:** * **Courvoisier’s Law:** In a patient with obstructive jaundice, if the gallbladder is palpable, the obstruction is unlikely to be a gallstone (usually a malignancy like pancreatic head tumor). * **Imaging of Choice:** For suspected pancreatic head tumor, a **Triple-phase Contrast-Enhanced CT (CECT)** is the gold standard. * **Marker:** **CA 19-9** is the most common tumor marker for pancreatic cancer (used for monitoring, not screening). * **Direct vs. Indirect:** Remember, "Direct is Downstream" (obstruction), while "Indirect is Internal/Inability" (hemolysis or enzyme deficiency).

Question 483: What is the most common complication after ERCP?

A. Acute Pancreatitis (Correct Answer)
B. Acute cholangitis
C. Acute cholecystitis
D. Duodenal perforation

Explanation: **Explanation:** **1. Why Acute Pancreatitis is the Correct Answer:** Post-ERCP Pancreatitis (PEP) is the most frequent complication following the procedure, occurring in approximately **3% to 10%** of unselected patients (and up to 25% in high-risk groups). The underlying mechanism involves mechanical trauma to the papilla, hydrostatic injury from contrast injection into the pancreatic duct, or chemical/enzymatic injury. It is clinically defined by new-onset upper abdominal pain and an elevation of serum amylase/lipase ≥3 times the upper limit of normal, 24 hours after the procedure. **2. Why the Other Options are Incorrect:** * **B. Acute Cholangitis:** While a serious risk, it occurs in only about 1% of cases. It is usually secondary to incomplete biliary drainage or contaminated equipment. * **C. Acute Cholecystitis:** This is a rare complication (approx. 0.2–0.5%), typically occurring when contrast is injected into a gallbladder with pre-existing stones or cystic duct obstruction. * **D. Duodenal Perforation:** This occurs in <1% of cases. It is usually "Type II" (peri-ampullary) related to sphincterotomy or "Type I" (lateral wall) related to the endoscope itself. **3. High-Yield Clinical Pearls for NEET-PG:** * **Most common complication:** Acute Pancreatitis. * **Most common cause of death post-ERCP:** Acute Pancreatitis. * **Prophylaxis:** Rectal **Indomethacin** or Diclofenac (NSAIDs) is the gold standard for preventing PEP in high-risk patients. * **Risk Factors:** Female gender, young age, Sphincter of Oddi dysfunction (SOD), and difficult cannulation. * **Early sign of perforation:** Surgical emphysema or retroperitoneal air on X-ray/CT.

Question 484: A 30-year-old female presented with pain in the right upper quadrant of the abdomen after 4 days of cholecystectomy. On USG, it showed a significant collection in RUQ. What will you do further?

A. USG guided aspiration of content (Correct Answer)
B. Re-explore laparoscopically
C. MRCP
D. Higher antibiotics

Explanation: ***USG guided aspiration of content***- A significant, symptomatic intra-abdominal collection post-cholecystectomy (4 days) strongly suggests a localized **abscess**, **hematoma**, or **biloma**, demanding urgent **source control**.- **Percutaneous drainage** guided by ultrasound or CT is the gold standard, minimally invasive treatment for accessible, well-defined fluid collections in the immediate postoperative period.*Re-explore laparoscopically*- Surgical **re-exploration** is more invasive and is typically reserved for cases where percutaneous drainage fails, or if there is diffuse peritonitis or active bleeding.- Since the USG shows a localized collection, the less invasive **percutaneous approach** is the initial management choice.*Higher antibiotics*- Antibiotics alone are insufficient to manage a significant, symptomatic fluid collection, especially if it is an **abscess** (pus collection).- Drainage (source control) followed by appropriate antibiotics is the required sequence to prevent systemic infection and **sepsis**.*MRCP*- **MRCP** (Magnetic Resonance Cholangiopancreatography) is a diagnostic test primarily used to evaluate the **biliary tree** for leaks or strictures.- While biliary tree integrity is important, the immediate therapeutic priority for a defined, symptomatic collection is drainage, not further imaging, unless a large, high-pressure **biloma** is highly suspected and the patient is stable.

Question 485: A 46-year-old male had a tumor in his left lobe of liver, so left sided hemi hepatectomy was planned. Which of the following segments of the liver will be resected in this procedure?

A. 1, 2 & 3
B. 5, 6, 7 & 8
C. 2, 3 & 4 (Correct Answer)
D. 2, 3, 4 & 5

Explanation: ***2, 3 and 4***- **Left hemi hepatectomy** involves the surgical removal of the entire **left functional lobe** of the liver, which contributes to approximately 40% of the total liver volume.- In the **Couinaud segmental classification**, the left functional lobe includes segments **II** (left lateral superior), **III** (left lateral inferior), and **IV** (left medial segment/quadrate lobe). *1, 2 & 3*- Segment **I** is the **caudate lobe**, which is typically considered functionally distinct and often preserved during a standard left hemi hepatectomy, unless the tumor involves this segment. - Resecting only segments II and III is known as a **left lateral sectionectomy** or left bisegmentectomy (corresponding to the anatomical left lobe). *5, 6, 7 & 8*- These segments constitute the **right functional lobe** of the liver (segments **V** and **VIII** are anterior; **VI** and **VII** are posterior). - Resection of these four segments would be classified as a **right hemi hepatectomy** (right lobectomy). *2, 3, 4 & 5*- This combination includes the entire left functional lobe (2, 3, 4) plus segment **V**, which is the **anterior inferior segment** of the right lobe. - Removing the left lobe plus segment V constitutes an **extended left hemi hepatectomy** (or left trisectionectomy), exceeding the definition of a standard left hemi hepatectomy.

Question 486: Which of the following is the classical triad of acute cholangitis?

A. Pain, $\uparrow$ WBC, $\uparrow$ Bilirubin
B. Pain, jaundice, fever (Correct Answer)
C. Fever, jaundice, $\uparrow$ WBC
D. Pain, jaundice, shock

Explanation: ***Correct: Pain, jaundice, fever*** - This is **Charcot's triad**, the classical presentation of acute cholangitis - Represents the three cardinal clinical features: **RUQ abdominal pain**, **jaundice** (from biliary obstruction), and **fever with rigors** (from ascending infection) - Acute cholangitis is a bacterial infection of the bile ducts, typically occurring due to biliary obstruction (most commonly from choledocholithiasis) - When hypotension and altered mental status are added to Charcot's triad, it becomes **Reynolds pentad** (indicating severe/suppurative cholangitis) *Incorrect: Pain, ↑ WBC, ↑ Bilirubin* - While these findings may be present in acute cholangitis, this is not the classical **clinical triad** - Laboratory findings are supportive but not part of the classical triad definition *Incorrect: Fever, jaundice, ↑ WBC* - Missing the key clinical feature of **RUQ pain** - Includes laboratory finding (↑ WBC) rather than clinical presentation *Incorrect: Pain, jaundice, shock* - This combination represents part of **Reynolds pentad** but is missing fever - Reynolds pentad = Charcot's triad + hypotension + altered mental status - Not the classical triad being asked in the question

Question 487: A 55-year-old diabetic male develops sudden-onset severe abdominal pain 3 days after an uncomplicated laparoscopic cholecystectomy. Examination reveals peritonitis with guarding and rigidity. Abdominal X-ray shows free air under the diaphragm. What is the most likely diagnosis?

A. Duodenal perforation (Correct Answer)
B. Normal post-laparoscopic pneumoperitoneum
C. Retained gallstone causing obstruction
D. Bile duct injury with bile peritonitis

Explanation: ***Duodenal perforation*** - The combination of **sudden, severe peritonitis** (guarding and rigidity) and **free air under the diaphragm** 3 days post-surgery is pathognomonic for a **perforated hollow viscus**. - Iatrogenic injury to adjacent structures, particularly the **duodenum** (first part is near the gallbladder bed), is a recognized complication during laparoscopic cholecystectomy that can lead to delayed presentation of perforation. - **Free intraperitoneal air** on X-ray confirms hollow organ perforation and mandates urgent surgical exploration. *Bile duct injury with bile peritonitis* - Bile leaks (e.g., from the cystic duct stump or duct of Luschka) cause **bile peritonitis**, resulting in inflammatory pain and signs of peritonitis, but they **do not introduce gas** into the peritoneal cavity. - Diagnosis is typically confirmed by high drainage fluid bilirubin or HIDA scan, and **free air under the diaphragm is characteristically absent**. - The presence of pneumoperitoneum rules this out as the primary diagnosis. *Normal post-laparoscopic pneumoperitoneum* - Residual CO₂ from laparoscopic insufflation can persist for 24-48 hours post-operatively, but it is typically **asymptomatic** and resolves spontaneously. - The presence of **acute peritonitis with guarding and rigidity** 3 days post-surgery indicates a surgical emergency, not benign residual gas. - The clinical picture of sepsis and acute abdomen distinguishes this from normal postoperative pneumoperitoneum. *Retained gallstone causing obstruction* - A retained stone in the common bile duct typically causes symptoms of **biliary colic**, **obstructive jaundice**, or **cholangitis** (Charcot's triad: fever, jaundice, right upper quadrant pain). - Although it can cause pain, a retained stone does not cause acute generalized peritonitis with **free air** under the diaphragm, as it does not breach the integrity of hollow viscera.

Question 488: Identify the instrument in the image:

A. Langenbeck retractor (Correct Answer)
B. Deaver retractor
C. Army-Navy retractor
D. Richardson retractor

Explanation: ***Langenbeck retractor*** - The image clearly displays a **Langenbeck retractor**, characterized by its **L-shaped blade** and often a slight curve in the handle. - This instrument is a **small, handheld retractor** commonly used for retracting skin, subcutaneous tissue, or muscle in various surgical procedures, particularly in general surgery and orthopedics.

Question 489: A 25-year-old shepherd presents with dragging discomfort in right hypochondrium and on examination shows presence of enlarged liver 5 cm below costal margins. The probable diagnosis is:

A. Amoebic liver abscess
B. Hydatid cyst (Correct Answer)
C. Pyogenic liver abscess
D. Hepatic adenoma

Explanation: ***Hydatid cyst*** - The patient's occupation as a **shepherd** is a key epidemiological clue, indicating high risk of exposure to **Echinococcus granulosus** through contact with infected dogs and sheep in the sheep-dog-human transmission cycle. - The **chronic presentation** with dragging discomfort (rather than acute fever/pain) and **massive hepatomegaly (5 cm below costal margin)** is characteristic of a **slow-growing hydatid cyst**, which can remain asymptomatic for years before causing symptoms due to mass effect. - Hydatid cysts are the most common cause of parasitic liver disease in endemic areas and classically present with hepatomegaly and vague abdominal discomfort in patients with animal exposure. *Amoebic liver abscess* - While amoebic liver abscess can cause hepatomegaly and right upper quadrant pain, it typically presents with a **more acute or subacute course** with fever, which is not mentioned here. - The condition is associated with a history of **dysentery or travel to endemic areas**, and the absence of systemic symptoms makes this less likely. - Amoebic abscesses usually cause **point tenderness** and the patient appears more systemically unwell. *Pyogenic liver abscess* - Pyogenic abscesses typically present with **acute symptoms** including high fever, rigors, severe pain, and signs of sepsis. - There is usually an identifiable source of infection such as **biliary tract disease, intra-abdominal infection, or bacteremia**. - The **chronic, indolent presentation** in this case does not fit the typical acute presentation of pyogenic abscess. *Hepatic adenoma* - Hepatic adenomas are **benign solid tumors** more commonly seen in women of reproductive age, particularly those using oral contraceptives. - They are typically **asymptomatic** and discovered incidentally, or present acutely with rupture and hemorrhage causing sudden pain and hemodynamic instability. - The **chronic symptoms and occupational exposure** in a male shepherd make this diagnosis unlikely.

Question 490: Which of the following is the most common variety of biliary tree: (Recent NEET Pattern 2016-17)

A. A
B. B
C. C (Correct Answer)
D. All of them have equal incidence

Explanation: ***Correct Option C*** - This image (C) displays the **most common anatomical variation of the biliary tree**, characterized by the right hepatic duct, left hepatic duct, and common hepatic duct forming in a typical configuration, found in approximately **88%** of individuals. - Understanding these variations is crucial for surgeons during biliary and hepatic procedures to prevent iatrogenic injuries. *Incorrect Option A* - This variation (A), where accessory ducts or an unusual branching pattern contributes to the common hepatic duct, represents a less common anatomical configuration, found in about **10%** of cases. - While present in a significant minority, it is not the most common variety. *Incorrect Option B* - This highly unusual variation (B) in biliary anatomy, typically involving a direct drainage of a segment of the liver into the common bile duct or an aberrant hepatic duct, is rare, occurring in approximately **2%** of individuals. - Its low incidence means it is far from being the most common type. *Incorrect Option D - "All of them have equal incidence"* - The image clearly indicates different percentages for each variation (10%, 2%, and 88%), demonstrating that their incidences are **not equal**. - There is a predominant anatomical configuration, making this option incorrect.

Practice by Chapter

Liver Anatomy and Physiology

Practice Questions

Benign Liver Lesions

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Liver Abscess

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Hepatocellular Carcinoma

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Metastatic Liver Disease

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Cirrhosis and Portal Hypertension

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Liver Trauma

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Cholelithiasis and Cholecystitis

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Choledocholithiasis

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Biliary Tract Tumors

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ERCP and Its Complications

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Liver Transplantation Basics

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