Pancreatic Surgery — MCQs

A 55-year-old male presents with features of obstructive jaundice and a weight loss of seven kilograms in the last two months. A CT scan reveals dilation of the common bile duct (CBD) up to its lower end and dilation of the main pancreatic duct. The pancreas appears normal. What is the most likely diagnosis?

Q267Easy

The 'double bubble sign' is typically seen in which of the following conditions?

Q268Medium

A 66-year-old man presents with a sudden onset of diabetes, anorexia, weight loss, and epigastric pain radiating to the back. What is the next best investigation for this patient?

Q269Easy

According to the AJCC 8th edition, what is the T-stage for a 2 cm size pancreatic cancer that involves the portal vein?

Q270Medium

What is the primary indication for performing ERCP in a patient with pancreatitis?

Pancreatic Surgery Indian Medical PG Practice Questions and MCQs

Question 261: A 40-year-old woman with severe chronic pancreatitis, unresponsive to other treatments, is scheduled for surgery. Ultrasound reveals no pseudocysts or gallstones. An ERCP shows dilated pancreatic ducts with multiple strictures. Which surgical procedure is most suitable for this patient?

A. Pancreatic jejunostomy (Puestow procedure) (Correct Answer)
B. Gastrojejunostomy
C. Cholecystectomy
D. Splenectomy

Explanation: ### Explanation The patient presents with **chronic pancreatitis** characterized by intractable pain and a "chain of lakes" appearance (dilated pancreatic duct with multiple strictures) on ERCP. **1. Why Option A is Correct:** The primary goal of surgery in chronic pancreatitis is pain relief. When the main pancreatic duct (MPD) is significantly dilated (typically **>6 mm**), a drainage procedure is indicated. The **Partington-Rochelle modification of the Puestow procedure** (Lateral Pancreaticojejunostomy) is the gold standard. It involves opening the MPD longitudinally from the tail to the head and anastomosing it to a Roux-en-Y limb of the jejunum. This facilitates drainage of the obstructed ductal system, thereby reducing intraductal pressure and alleviating pain. **2. Why the Other Options are Incorrect:** * **B. Gastrojejunostomy:** This is used to bypass gastric outlet obstruction (e.g., in periampullary carcinoma) but does not address the pancreatic ductal pathology. * **C. Cholecystectomy:** Indicated for gallstone pancreatitis. The ultrasound specifically ruled out gallstones in this patient. * **D. Splenectomy:** Indicated in chronic pancreatitis only if there is associated **sinistral (left-sided) portal hypertension** due to splenic vein thrombosis. **3. High-Yield Clinical Pearls for NEET-PG:** * **Indications for Surgery:** Intractable pain (most common), biliary obstruction, or suspicion of malignancy. * **Frey’s Procedure:** Indicated if there is a dilated duct **plus** an inflammatory mass in the head of the pancreas (combines ductal drainage with local resection of the pancreatic head). * **Whipple’s Procedure:** Reserved for chronic pancreatitis confined strictly to the head of the pancreas without ductal dilation. * **Investigation of Choice:** **MRCP** is the non-invasive gold standard for ductal anatomy; **CT scan** is best for detecting calcifications.

Question 262: A patient complains of epigastric pain, radiating to the back off and on. What is the investigation of choice?

A. MRI
B. CT scan (Correct Answer)
C. USG
D. Radio nucleotide scan

Explanation: **Explanation:** The clinical presentation of epigastric pain radiating to the back is a classic hallmark of **pancreatic pathology**, most commonly acute or chronic pancreatitis or pancreatic malignancy. **Why CT Scan is the Correct Answer:** Contrast-Enhanced Computed Tomography (CECT) is the **investigation of choice** for pancreatic evaluation. It provides superior anatomical detail, allows for the staging of inflammation (Balthazar scoring), detects complications like necrosis or pseudocysts, and is the gold standard for staging pancreatic adenocarcinoma (resectability). Its high sensitivity, specificity, and rapid acquisition make it the preferred initial diagnostic modality in a clinical setting. **Analysis of Incorrect Options:** * **USG (Ultrasound):** While often the *first-line* screening tool for abdominal pain, it is frequently limited by overlying bowel gas, which obscures the pancreas. It is excellent for detecting gallstones but lacks the sensitivity of CT for parenchymal details. * **MRI/MRCP:** While highly sensitive for ductal anatomy and certain cystic lesions, it is more expensive, time-consuming, and generally reserved for cases where CT is inconclusive or contrast is contraindicated. * **Radio nucleotide scan:** This has no primary role in the acute or routine diagnosis of pancreatic inflammatory or neoplastic conditions. **Clinical Pearls for NEET-PG:** * **Investigation of choice for Acute Pancreatitis:** CECT (ideally performed after 48–72 hours to accurately assess necrosis). * **Most sensitive test for Chronic Pancreatitis:** Endoscopic Ultrasound (EUS). * **Gold Standard for Pancreatic Duct Anatomy:** MRCP (non-invasive) or ERCP (invasive/therapeutic). * **Double Duct Sign on CT:** Suggests a tumor in the head of the pancreas (dilatation of both CBD and Pancreatic duct).

Question 263: Which of the following statements is true regarding pancreatic injury?

A. Most pancreatic injuries are iatrogenic.
B. Blunt trauma is the most common cause of pancreatic injury.
C. Urine amylase levels are diagnostic for pancreatic injury.
D. High-resolution computed tomography (HRCT) is the investigation of choice for pancreatic injury. (Correct Answer)

Explanation: **Explanation:** Pancreatic injuries are complex due to the organ's retroperitoneal location. Understanding the diagnostic approach is crucial for NEET-PG. **Why Option D is Correct:** **Contrast-Enhanced Computed Tomography (CECT)**, often performed as high-resolution scans, is the **investigation of choice** in hemodynamically stable patients. It is highly sensitive for detecting parenchymal lacerations, edema, and peripancreatic fluid collections. While MRCP is superior for visualizing ductal integrity, CT remains the primary diagnostic modality in the acute trauma setting. **Why Other Options are Incorrect:** * **Option A:** Most pancreatic injuries are **traumatic**, not iatrogenic. Iatrogenic injuries (e.g., during splenectomy or gastrectomy) occur but are less frequent than external trauma. * **Option B:** Globally, **penetrating trauma** (gunshot or stab wounds) is the most common cause. In blunt trauma, the pancreas is typically crushed against the vertebral column (e.g., steering wheel injury). * **Option C:** Serum or urine amylase levels are **neither sensitive nor specific**. Levels can be normal in significant ductal transection or elevated in non-pancreatic abdominal trauma. They are not diagnostic. **High-Yield Clinical Pearls for NEET-PG:** * **AAST Grading:** Management depends on the **American Association for the Surgery of Trauma (AAST)** grade. Grades I-II (minor) are managed conservatively; Grades III-V (ductal involvement/shattered pancreas) usually require surgery. * **The "Steering Wheel" Injury:** Classic presentation of blunt pancreatic trauma. * **Ductal Integrity:** The most important prognostic factor. If CT is equivocal but duct injury is suspected, **MRCP or ERCP** is the next step. * **Management:** Distal to the SMA/SMV (Body/Tail) with duct injury → **Distal Pancreatectomy**. Proximal (Head) with duct injury → **Wide drainage** or Whipple’s (if severe).

Question 264: Which of the following is NOT a poor prognostic factor for acute pancreatitis?

A. Hyperglycemia
B. Hypocalcemia
C. Raised LDH level in blood
D. Hyperamylasemia (Correct Answer)

Explanation: In acute pancreatitis, the severity of the disease is determined by the extent of pancreatic necrosis and the systemic inflammatory response, not by the magnitude of enzyme elevation. **Explanation of the Correct Answer:** **D. Hyperamylasemia:** While serum amylase is a sensitive diagnostic marker for acute pancreatitis, its absolute level does **not** correlate with the severity or prognosis of the disease. A patient with five times the normal limit of amylase may have mild interstitial pancreatitis, while a patient with a massive necrotizing process may have only mildly elevated or even normal amylase (due to "burnt-out" tissue or hypertriglyceridemia). **Explanation of Incorrect Options:** The other options are classic components of the **Ranson’s Criteria** and **Modified Glasgow Score**, which are used to predict severity: * **A. Hyperglycemia (>200 mg/dL):** Reflects endocrine pancreatic dysfunction and a high-stress metabolic state. * **B. Hypocalcemia (<8 mg/dL):** Occurs due to "saponification" (calcium binding to necrotic fat). Significant drops indicate extensive peripancreatic fat necrosis and poor prognosis. * **C. Raised LDH (>350 IU/L):** Indicates significant cell turnover and systemic tissue damage. **Clinical Pearls for NEET-PG:** * **Ranson’s Criteria:** Remember the "GAWLE" (at admission) and "C HOBBS" (at 48 hours) mnemonics. * **Most specific enzyme:** Serum Lipase is more specific than Amylase and remains elevated longer. * **Best prognostic marker:** **C-Reactive Protein (CRP)** >150 mg/L at 48 hours is a reliable independent predictor of severity. * **Gold Standard for Necrosis:** Contrast-Enhanced CT (CECT) scan, ideally performed 72–96 hours after symptom onset.

Question 265: Which of the following investigations are used to diagnose carcinoma of the head of the pancreas?

A. X-ray abdomen, Ultrasound (USG), CT Scan
B. Hypotonic duodenogram, Ultrasound (USG), CT Scan, Endoscopy (Correct Answer)
C. Hypotonic duodenogram, X-ray abdomen, Ultrasound (USG), Endoscopy
D. Hypotonic duodenogram, X-ray abdomen, CT Scan, Endoscopy

Explanation: **Explanation:** Carcinoma of the head of the pancreas often presents with obstructive jaundice and requires a multi-modal diagnostic approach to assess the primary tumor and its effect on adjacent structures. **Why Option B is Correct:** * **Ultrasound (USG):** Usually the first-line screening tool to detect biliary dilatation and mass lesions. * **CT Scan (Contrast-Enhanced):** The gold standard for staging, assessing vascular invasion (resectability), and detecting distant metastasis. * **Endoscopy (Side-viewing/ERCP/EUS):** Essential for visualizing the ampulla, obtaining biopsies, or performing brush cytology. * **Hypotonic Duodenogram:** Though largely replaced by modern imaging, it is classically used to detect the **"Rose-thorn appearance"** or the **"Reverse 3 sign of Frostberg"** caused by the tumor indenting the duodenum. **Why Other Options are Incorrect:** * **X-ray Abdomen (Options A, C, D):** Plain radiographs are non-specific for pancreatic cancer. While they might show indirect signs like a "sentinel loop" in pancreatitis or calcifications in chronic pancreatitis, they lack the sensitivity or specificity required to diagnose a head of pancreas malignancy. **High-Yield Clinical Pearls for NEET-PG:** * **Double Duct Sign:** Dilatation of both the Common Bile Duct (CBD) and the Pancreatic Duct on ERCP/MRCP; highly suggestive of head of pancreas or periampullary carcinoma. * **Courvoisier’s Law:** In a patient with obstructive jaundice, if the gallbladder is palpable, the obstruction is unlikely to be due to a stone (suggests malignancy). * **Tumor Marker:** **CA 19-9** is the most specific marker for monitoring response to treatment and recurrence, though not for primary screening. * **Whipple’s Procedure:** The surgical treatment of choice for resectable tumors of the pancreatic head.

Question 266: A 55-year-old male presents with features of obstructive jaundice and a weight loss of seven kilograms in the last two months. A CT scan reveals dilation of the common bile duct (CBD) up to its lower end and dilation of the main pancreatic duct. The pancreas appears normal. What is the most likely diagnosis?

A. Choledocholithiasis
B. Carcinoma of the gallbladder
C. Hilar cholangiocarcinoma
D. Periampullary carcinoma (Correct Answer)

Explanation: ### Explanation **Correct Option: D. Periampullary carcinoma** The clinical presentation of **obstructive jaundice** and significant **weight loss** in an elderly male is highly suggestive of malignancy. The key diagnostic feature in this case is the **"Double Duct Sign"**—the simultaneous dilation of both the Common Bile Duct (CBD) and the Main Pancreatic Duct (MPD). This sign indicates an obstructive lesion located at or near the **Ampulla of Vater**, where both ducts converge. Periampullary carcinomas (which include tumors of the ampulla, distal CBD, periampullary duodenum, or the head of the pancreas) are the most common cause of this presentation. Even if the pancreas appears "normal" on a routine CT, a small ampullary tumor can cause significant proximal dilation. **Analysis of Incorrect Options:** * **A. Choledocholithiasis:** While it causes obstructive jaundice and CBD dilation, it rarely causes significant weight loss or the "Double Duct Sign" unless a stone is impacted precisely at the ampulla, which is less common than malignancy in this age group. * **B. Carcinoma of the gallbladder:** This typically presents with a mass in the gallbladder fossa and local invasion. It causes biliary obstruction but does not typically involve the pancreatic duct. * **C. Hilar cholangiocarcinoma (Klatskin tumor):** This occurs at the confluence of the right and left hepatic ducts. It results in dilated intrahepatic biliary radicals with a **collapsed** CBD and a normal pancreatic duct. **NEET-PG High-Yield Pearls:** * **Double Duct Sign:** Classically associated with Carcinoma of the Head of the Pancreas and Periampullary Carcinoma. * **Courvoisier’s Law:** In a patient with obstructive jaundice, if the gallbladder is palpable, the obstruction is unlikely to be due to a stone (suggests malignancy). * **Investigation of Choice:** **CECT** (Triple phase) is the initial investigation; **ERCP/EUS** may be used for tissue diagnosis or if CT is inconclusive. * **Treatment:** The definitive surgical procedure for resectable periampullary tumors is **Whipple’s Pancreaticoduodenectomy**.

Question 267: The 'double bubble sign' is typically seen in which of the following conditions?

A. Annular pancreas (Correct Answer)
B. Ureterocele
C. Hypertrophic pyloric stenosis
D. Wilm's tumour

Explanation: ### Explanation The **'Double Bubble Sign'** is a classic radiological finding on an abdominal X-ray indicating **duodenal obstruction**. It represents air trapped in two distinct dilated compartments: the **stomach** (first bubble) and the **proximal duodenum** (second bubble), with no distal bowel gas. **1. Why Annular Pancreas is Correct:** Annular pancreas occurs due to the failure of the ventral pancreatic bud to rotate properly, resulting in a ring of pancreatic tissue encircling the second part of the duodenum. This causes extrinsic compression and high intestinal obstruction, leading to the characteristic double bubble appearance on imaging. **2. Analysis of Incorrect Options:** * **Ureterocele:** This is a cystic out-pouching of the distal ureter into the urinary bladder. On intravenous pyelogram (IVP), it presents with a **'Cobra-head'** or 'Adder-head' appearance, not a double bubble. * **Hypertrophic Pyloric Stenosis (HPS):** This causes obstruction at the gastric outlet. It typically shows a **'Single Bubble'** (distended stomach) and is associated with the 'String sign' or 'Target sign' on ultrasound. * **Wilm’s Tumour:** A pediatric renal malignancy. It presents as a large abdominal mass that displaces bowel loops but does not typically cause a double bubble sign. **Clinical Pearls for NEET-PG:** * **Differential Diagnosis of Double Bubble:** Duodenal atresia (most common cause), Annular pancreas, Malrotation with Ladd’s bands, and Duodenal web. * **Association:** Duodenal atresia and Annular pancreas are strongly associated with **Down Syndrome (Trisomy 21)**. * **Management:** The surgical treatment of choice for annular pancreas causing obstruction is **Duodenoduodenostomy** (bypassing the obstruction) rather than dividing the pancreatic ring, to avoid pancreatic fistulas.

Question 268: A 66-year-old man presents with a sudden onset of diabetes, anorexia, weight loss, and epigastric pain radiating to the back. What is the next best investigation for this patient?

A. Ultrasound of the abdomen
B. CT scan of the abdomen (Correct Answer)
C. Enteroclysis
D. Triple contrast barium enema

Explanation: ### Explanation **Clinical Reasoning:** The patient presents with the classic "red flag" symptoms of **Carcinoma of the Head of the Pancreas**: new-onset diabetes in an elderly patient, significant weight loss (anorexia), and epigastric pain radiating to the back. In any patient over 50 with new-onset diabetes and weight loss, pancreatic malignancy must be ruled out until proven otherwise. **Why CT Scan is the Correct Answer:** A **Contrast-Enhanced CT (CECT) scan of the abdomen** (specifically using a pancreatic protocol) is the gold standard and the "next best investigation" for suspected pancreatic cancer. It provides high sensitivity for detecting the mass, evaluates the relationship with major vascular structures (SMA, celiac axis, portal vein), and assesses for liver metastasis or lymphadenopathy, thereby determining **resectability**. **Why Other Options are Incorrect:** * **Ultrasound of the Abdomen:** While often used as an initial screening tool for jaundice, it is frequently limited by overlying bowel gas and cannot accurately stage the tumor or assess vascular invasion. * **Enteroclysis:** This is a specialized small-bowel imaging technique used for mucosal lesions or obstructions (e.g., Crohn’s disease); it has no role in diagnosing pancreatic pathology. * **Triple Contrast Barium Enema:** This is used to visualize the colon and rectum. It is irrelevant for evaluating the pancreas. **High-Yield Pearls for NEET-PG:** * **Double Duct Sign:** Dilation of both the common bile duct (CBD) and the pancreatic duct on imaging, highly suggestive of pancreatic head tumors. * **Courvoisier’s Law:** In a patient with obstructive jaundice, if the gallbladder is palpable, the obstruction is unlikely to be due to a stone (suggests malignancy). * **Tumor Marker:** **CA 19-9** is the most specific marker for monitoring response to treatment, but not for primary screening. * **Surgery of Choice:** Whipple’s Procedure (Pancreaticoduodenectomy) for resectable tumors of the head.

Question 269: According to the AJCC 8th edition, what is the T-stage for a 2 cm size pancreatic cancer that involves the portal vein?

A. T1 (Correct Answer)
B. T2
C. T3
D. T4

Explanation: ### Explanation The correct answer is **T1**. The **AJCC 8th Edition** introduced a significant shift in the T-staging of pancreatic cancer, moving from a "descriptive" staging system to a strictly **"size-based"** system for T1–T3. #### 1. Why T1 is Correct Under the 8th edition, T-staging is determined by the maximum dimension of the tumor: * **T1:** Tumor ≤ 2 cm in greatest dimension. * **T2:** Tumor > 2 cm and ≤ 4 cm. * **T3:** Tumor > 4 cm. In this question, the tumor size is **2 cm**, which falls squarely into the **T1** category. Crucially, the 8th edition **removed** "extrapancreatic extension" and "portal vein/superior mesenteric vein (SMV) involvement" from the T3 definition. Vascular involvement only triggers a **T4** stage if it involves the **unreconstructible** arterial supply (Celiac axis, SMA, or Common Hepatic Artery). Since portal vein involvement is no longer a staging criterion, the size (2 cm) dictates the stage. #### 2. Why Other Options are Wrong * **T2:** Incorrect because the tumor is not greater than 2 cm. * **T3:** Incorrect because the tumor is not greater than 4 cm. In the older 7th edition, T3 was defined by extension beyond the pancreas; this is no longer applicable. * **T4:** Incorrect because T4 is now reserved specifically for involvement of the **Celiac axis, Superior Mesenteric Artery (SMA), or Common Hepatic Artery**, regardless of size. #### Clinical Pearls for NEET-PG * **T1 Sub-classification:** T1a (≤ 0.5 cm), T1b (> 0.5 cm and < 1 cm), T1c (1–2 cm). * **Vascular Rule:** Involvement of the **Portal Vein or SMV** does **not** change the T-stage in the 8th edition; it only affects resectability (Borderline Resectable). * **N-stage Changes:** N1 is now 1–3 positive nodes; N2 is ≥ 4 positive nodes. * **High-Yield:** The most common site for pancreatic cancer is the **Head** (60%), and the most common histological type is **Ductal Adenocarcinoma**.

Question 270: What is the primary indication for performing ERCP in a patient with pancreatitis?

A. Gallstone
B. Associated cholangitis (Correct Answer)
C. Ascites
D. Pancreatic divisum

Explanation: **Explanation:** In the management of acute pancreatitis, **ERCP (Endoscopic Retrograde Cholangiopancreatography)** is not a diagnostic tool but a therapeutic intervention. The primary and most urgent indication for ERCP in this context is **associated acute cholangitis**. **Why Option B is Correct:** When a gallstone obstructs the common bile duct (CBD) leading to both pancreatitis and biliary infection (cholangitis), the patient is at high risk for septic shock and mortality. Urgent ERCP (within 24 hours) is mandatory to perform a sphincterotomy and stone extraction to decompress the biliary tree. **Analysis of Incorrect Options:** * **A. Gallstone:** The mere presence of gallstones (cholelithiasis) or even a stone in the CBD (choledocholithiasis) without signs of infection or persistent obstruction is not an immediate indication for ERCP. Most small stones pass spontaneously. * **C. Ascites:** Pancreatic ascites is usually managed conservatively or via image-guided drainage. ERCP is only indicated if a persistent pancreatic ductal leak is suspected that requires stenting. * **D. Pancreatic Divisum:** While this is a congenital anomaly associated with recurrent pancreatitis, it is a structural cause, not an acute indication for ERCP during an episode of pancreatitis unless minor papilla therapy is planned electively. **High-Yield Clinical Pearls for NEET-PG:** * **Timing:** Urgent ERCP is indicated within **24 hours** if cholangitis is present. * **Predictive Markers:** If a patient has gallstone pancreatitis with persistent biliary obstruction (rising bilirubin/dilated CBD) but *no* cholangitis, ERCP is recommended within **72 hours**. * **Gold Standard:** MRCP is the non-invasive "Gold Standard" for diagnosing CBD stones, whereas ERCP is reserved for "therapeutic" intervention. * **Post-ERCP Pancreatitis:** Remember that ERCP itself is a known cause of acute pancreatitis (most common complication).

Practice by Chapter

Pancreatic Anatomy and Physiology

Practice Questions

Acute Pancreatitis

Practice Questions

Chronic Pancreatitis

Practice Questions

Pancreatic Pseudocysts

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Pancreatic Adenocarcinoma

Practice Questions

Cystic Neoplasms of Pancreas

Practice Questions

Neuroendocrine Tumors of Pancreas

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Pancreatic Trauma

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Pancreatectomy Techniques

Practice Questions

Whipple Procedure

Practice Questions

Pancreatic Anastomosis

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Complications of Pancreatic Surgery

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