Pancreatic Surgery Practice Questions

Q: 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?

Pancreatic jejunostomy (Puestow procedure). ### 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.

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

CT scan. **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).

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

Hyperamylasemia. 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 ( 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.

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

Hypotonic duodenogram, Ultrasound (USG), CT Scan, Endoscopy. **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.

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

Annular pancreas. ### 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.

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

T1. ### 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**.

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

Associated cholangitis. **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).

Question 1

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?

Accepted Answer

Pancreatic jejunostomy (Puestow procedure)

Answer

Gastrojejunostomy

Answer

Cholecystectomy

Answer

Splenectomy

Question 2

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

Accepted Answer

CT scan

Answer

MRI

Answer

USG

Answer

Radio nucleotide scan

Question 3

Which of the following statements is true regarding pancreatic injury?

Accepted Answer

High-resolution computed tomography (HRCT) is the investigation of choice for pancreatic injury.

Answer

Most pancreatic injuries are iatrogenic.

Answer

Blunt trauma is the most common cause of pancreatic injury.

Answer

Urine amylase levels are diagnostic for pancreatic injury.

Question 4

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

Accepted Answer

Hyperamylasemia

Answer

Hyperglycemia

Answer

Hypocalcemia

Answer

Raised LDH level in blood

Question 5

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

Accepted Answer

Hypotonic duodenogram, Ultrasound (USG), CT Scan, Endoscopy

Answer

X-ray abdomen, Ultrasound (USG), CT Scan

Answer

Hypotonic duodenogram, X-ray abdomen, Ultrasound (USG), Endoscopy

Answer

Hypotonic duodenogram, X-ray abdomen, CT Scan, Endoscopy

Question 6

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?

Accepted Answer

Periampullary carcinoma

Answer

Choledocholithiasis

Answer

Carcinoma of the gallbladder

Answer

Hilar cholangiocarcinoma

Question 7

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

Accepted Answer

Annular pancreas

Answer

Ureterocele

Answer

Hypertrophic pyloric stenosis

Answer

Wilm's tumour

Question 8

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?

Accepted Answer

CT scan of the abdomen

Answer

Ultrasound of the abdomen

Answer

Enteroclysis

Answer

Triple contrast barium enema

Question 9

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

Accepted Answer

T1

Answer

T2

Answer

T3

Answer

T4

Question 10

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

Accepted Answer

Associated cholangitis

Answer

Gallstone

Answer

Ascites

Answer

Pancreatic divisum

Pancreatic Surgery — MCQs

Pancreatic Surgery — MCQs

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