Pancreatic Surgery Practice Questions

Q: Whipple's triad in insulinoma includes all of the following EXCEPT:

ACTH is the treatment of choice. **Explanation:** Whipple’s triad is the classic clinical diagnostic criteria for **Insulinoma**, the most common functioning neuroendocrine tumor of the pancreas. The triad consists of: 1. **Symptoms of hypoglycemia** (neuroglycopenic or autonomic) typically occurring during fasting or exercise. 2. **Documented low blood glucose** (usually <45–50 mg/dL) at the time of symptoms. 3. **Immediate relief of symptoms** following the administration of glucose. **Analysis of Options:** * **Option A (Correct Answer):** ACTH is **not** the treatment of choice. The definitive treatment for a localized insulinoma is **surgical resection** (enucleation or pancreatectomy). Medical management for symptomatic control includes Diazoxide (which inhibits insulin release) or Somatostatin analogues (Octreotide). * **Option B:** This is a component of Whipple’s triad. The rapid resolution of confusion or sweating after oral or IV glucose confirms the symptoms were due to hypoglycemia. * **Option C:** Biochemical confirmation of hypoglycemia (typically 3 µU/mL), elevated C-peptide (>0.6 ng/mL), and elevated Pro-insulin, with an absence of sulfonylureas in urine/plasma. * **Localization:** Endoscopic Ultrasound (EUS) is highly sensitive. Intraoperative ultrasound is the most sensitive method for localization during surgery. * **Association:** 10% of insulinomas are associated with **MEN-1 syndrome** (usually multiple tumors).

Q: A 30-year-old patient presents with severe upper abdominal pain and elevated serum lipase. A CECT scan was performed and is shown. What is the next line of management?

Internal drainage. ***Internal drainage*** - **Large pancreatic pseudocysts** (>6 cm) that are symptomatic require **internal drainage** via **cystogastrostomy** or **cystojejunostomy** to create permanent communication with the GI tract. - This approach provides **definitive treatment** with lower recurrence rates and avoids the complications associated with external drainage systems. *Conservative management* - Reserved for **small, asymptomatic pseudocysts** (<6 cm) that may resolve spontaneously over time. - **Large symptomatic pseudocysts** like this case require active intervention due to risk of complications like **rupture**, **infection**, or **biliary obstruction**. *External drainage* - Primarily indicated for **infected pancreatic collections** or **necrotizing pancreatitis** with sepsis requiring immediate drainage. - Results in **high recurrence rates** and potential for **pancreaticocutaneous fistula** formation, making it suboptimal for sterile pseudocysts. *Endoscopic retrograde cholangiopancreatography (ERCP)* - Useful for **pancreatic duct strictures** or **stones** but not the primary treatment for **mature pseudocysts**. - May be considered if there is associated **pancreatic duct disruption** or **biliary obstruction**, but internal drainage remains the definitive management.

Q: The "chain of lakes appearance" on ERCP is typically seen in which of the following conditions?

Chronic pancreatitis. **Explanation:** The **"chain of lakes"** appearance is a classic radiological sign of **Chronic Pancreatitis** seen on ERCP (Endoscopic Retrograde Cholangiopancreatography) or MRCP. **Why it occurs:** Chronic pancreatitis is characterized by irreversible damage to the pancreatic parenchyma, leading to fibrosis and strictures of the pancreatic duct. This results in a pattern of **alternating segments of stenosis (narrowing) and dilatation** of the main pancreatic duct. The dilated segments resemble a series of small lakes connected by narrow channels (the strictures), hence the name. **Analysis of Incorrect Options:** * **Acute Pancreatitis:** This is an inflammatory process where the ductal system usually appears normal or may show mild compression due to edema. It does not typically feature the chronic architectural distortion seen in the "chain of lakes." * **Pancreatic Adenocarcinoma:** This typically presents with the **"Double Duct Sign"** (simultaneous dilatation of both the common bile duct and the pancreatic duct) due to a tumor obstructing the head of the pancreas. * **Crohn’s Disease:** This is an inflammatory bowel disease. While it can have a "string sign" in the terminal ileum, it does not involve the pancreatic ductal system in this manner. **High-Yield Clinical Pearls for NEET-PG:** * **Most common cause of Chronic Pancreatitis:** Alcohol (Adults), Cystic Fibrosis (Children). * **Classic Triad:** Steatorrhea, Diabetes Mellitus, and Pancreatic Calcifications. * **Investigation of Choice:** MRCP is now preferred over ERCP for diagnosis as it is non-invasive. * **Puestow Procedure:** A surgical treatment (lateral pancreaticojejunostomy) used when the duct is significantly dilated (often >6mm) in chronic pancreatitis.

Q: All of the following are true about pancreatic cancer, EXCEPT:

The 5-year survival rate is 40%.. **Explanation:** Pancreatic adenocarcinoma is one of the most lethal malignancies, characterized by aggressive biology and late clinical presentation. **1. Why Option D is the Correct Answer (The Exception):** The 5-year survival rate for pancreatic cancer is notoriously low, typically ranging from **5% to 10%** overall. Even in patients who undergo successful surgical resection (Whipple’s procedure), the 5-year survival rarely exceeds 20–25%. Therefore, the statement claiming a 40% survival rate is factually incorrect and represents the "exception." **2. Analysis of Other Options:** * **Option A:** Pancreatic cancer has a **poor prognosis** due to early lymphatic and vascular invasion, lack of early symptoms, and resistance to conventional chemotherapy. * **Option B:** The **head of the pancreas** is the most common site (approx. 65–75% of cases). These often present earlier than body/tail tumors due to obstructive jaundice (Courvoisier’s Law). * **Option C:** Approximately **80–90%** of patients present with locally advanced or metastatic disease, making them **inoperable** at the time of diagnosis. Only 10–20% are candidates for curative resection. **Clinical Pearls for NEET-PG:** * **Risk Factors:** Smoking (strongest environmental factor), chronic pancreatitis, DM, and BRCA2 mutations. * **Tumor Marker:** **CA 19-9** (used for monitoring response to therapy, not for screening). * **Investigation of Choice:** **Triple-phase Contrast-Enhanced CT (CECT)** is the gold standard for diagnosis and staging (resectability). * **Double Duct Sign:** Dilatation of both the common bile duct and the pancreatic duct on imaging, highly suggestive of a head of pancreas mass.

Q: Which of the following is FALSE about annular pancreas?

Gastrojejunostomy offers the best remedy.. **Explanation:** **Annular pancreas** is a rare congenital anomaly where a ring of pancreatic tissue encircles the second part of the duodenum. This occurs due to the failure of the **ventral pancreatic bud** to rotate properly behind the duodenum, leading to extrinsic duodenal obstruction. **Why Option D is the correct (False) statement:** The treatment of choice for annular pancreas is **Duodenoduodenostomy** (a bypass procedure). **Gastrojejunostomy** is not the preferred remedy because it does not adequately decompress the duodenum proximal to the obstruction and can lead to complications like stomal ulcers and blind loop syndrome. Direct resection of the pancreatic ring is also avoided due to the high risk of pancreatic fistulas and damage to the underlying common bile duct. **Analysis of other options:** * **Option A:** There is a strong clinical association between annular pancreas and chromosomal abnormalities, most notably **Down’s syndrome** (Trisomy 21). * **Option B:** Since the obstruction occurs at the second part of the duodenum (usually distal to the ampulla of Vater), the resulting vomiting is typically **bilious**. * **Option C:** Like duodenal atresia, an X-ray of an infant with annular pancreas often shows the **"Double-bubble sign,"** representing air in the dilated stomach and the proximal duodenum. **NEET-PG High-Yield Pearls:** * **Embryology:** Caused by the failure of the bifid ventral pancreatic bud to rotate. * **Presentation:** Can present in neonates (vomiting) or adults (peptic ulcers/pancreatitis). * **Imaging:** "Double-bubble" on X-ray; "Crocodile jaw" appearance on CT. * **Surgery of Choice:** Diamond-shaped Duodenoduodenostomy.

Q: Which of the following criteria is NOT included in Ranson's criteria for predicting the severity of pancreatitis?

Serum amylase > 350 IU. **Explanation:** Ranson’s Criteria is a classic clinical scoring system used to predict the severity and mortality of **Acute Pancreatitis**. It assesses parameters at two time points: at admission and during the first 48 hours. **1. Why Option B is the correct answer:** Serum amylase levels are diagnostic for acute pancreatitis but have **no prognostic value**. A very high amylase level does not correlate with the severity of the disease or the risk of complications. Therefore, it is not included in Ranson’s, APACHE II, or Glasgow scoring systems. **2. Analysis of Incorrect Options (Included in Ranson’s at Admission):** The mnemonic **GAWOT** is used for criteria at admission (for non-gallstone pancreatitis): * **G - Glucose:** > 200 mg/dL * **A - Age:** > 55 years (Option C) * **W - WBC count:** > 16,000/mm³ (Option A) * **O - AST:** > 250 U/L (Option D) * **T - LDH:** > 350 IU/L **3. Clinical Pearls for NEET-PG:** * **48-hour criteria (Mnemonic: BUCHAS):** BUN increase (>5 mg/dL), Calcium ( 10%), Arterial PO2 ( 4 mEq/L), and Fluid Sequestration (>6L). * **Mortality Prediction:** A score of 0–2 has 6 indicates a mortality rate of approximately 40%. * **Modified Ranson’s:** Note that for **Gallstone-induced pancreatitis**, the thresholds change (e.g., Age > 70, WBC > 18,000). * **High-Yield Fact:** The most sensitive marker for predicting severity within the first 24 hours is often considered to be **APACHE II** or **CRP** (>150 mg/L at 48 hours).

Q: Whipple's operation is done for the treatment of which condition?

Carcinoma of the pancreatic head. **Explanation:** **Whipple’s Operation**, medically known as a **Pancreaticoduodenectomy**, is the standard surgical procedure for resectable tumors of the pancreatic head and the periampullary region. **Why Option B is Correct:** The head of the pancreas shares a common blood supply (gastroduodenal and pancreaticoduodenal arteries) and anatomical proximity with the duodenum and the distal common bile duct. Therefore, a malignancy in the pancreatic head requires an "en-bloc" resection of the pancreatic head, the duodenum, the gallbladder, the distal bile duct, and sometimes the gastric antrum (Classic Whipple). **Analysis of Incorrect Options:** * **A. Hepatocellular carcinoma:** This is a primary liver malignancy treated by liver resection (hepatectomy) or transplantation, not pancreatic surgery. * **C. Small intestinal tumors:** While the duodenum is removed in a Whipple, tumors of the jejunum or ileum are treated with segmental bowel resection and mesenteric lymphadenectomy. * **D. Acute pancreatitis:** This is primarily a medical emergency managed with aggressive fluid resuscitation and supportive care. Surgery (necrosectomy) is reserved only for infected necrosis, not a Whipple procedure. **NEET-PG High-Yield Pearls:** * **Indications:** Carcinoma of the pancreatic head, Ampullary CA, Distal CBD CA, and Duodenal CA (collectively called Periampullary Carcinomas). * **Reconstruction (The "3 Anastomoses"):** Pancreaticojejunostomy (most crucial, site of potential leak), Choledochojejunostomy, and Gastrojejunostomy. * **Complications:** The most common cause of mortality post-Whipple is a **pancreatic fistula/leak**. The most common delayed complication is delayed gastric emptying. * **Modified Version:** **PPPD** (Pylorus-Preserving Pancreaticoduodenectomy) preserves the entire stomach and pylorus to improve nutritional outcomes.

Q: Localization in insulinoma is best with:

Selective arteriography. **Explanation:** Insulinomas are the most common functional neuroendocrine tumors (NETs) of the pancreas. They are typically small (<2 cm), solitary, and hypervascular. **1. Why Selective Arteriography is Correct:** Insulinomas are characteristically **hypervascular** lesions. Selective arteriography (often combined with calcium stimulation, known as the **ASVS or Arterial Calcium Stimulation Venous Sampling** test) is considered the most sensitive preoperative modality for localization when non-invasive imaging fails. While intraoperative ultrasound (IOUS) is the overall "gold standard" for localization during surgery, among the provided options, selective arteriography offers the highest sensitivity for identifying these small, vascular tumors. **2. Why Other Options are Incorrect:** * **A & B (CT and MRI):** While these are the initial screening tools, they often fail to detect insulinomas because the tumors are frequently too small to be distinguished from normal pancreatic parenchyma. * **C (Somatostatin Receptor Scintigraphy/Octreoscan):** Unlike other NETs (like gastrinomas), only about 50% of insulinomas express somatostatin receptors (SSTR2). Therefore, SRS has a low sensitivity for insulinoma and is not the preferred localization study. **Clinical Pearls for NEET-PG:** * **Whipple’s Triad:** Symptoms of hypoglycemia, low plasma glucose (<50 mg/dL), and relief of symptoms after glucose administration. * **The "10% Rule":** 10% are multiple, 10% are malignant, and 10% are associated with MEN-1 syndrome. * **Best Initial Test:** Multidetector CT (MDCT). * **Most Sensitive Preoperative Test:** Endoscopic Ultrasound (EUS) or Selective Arteriography with Calcium Stimulation. * **Most Sensitive Overall:** Intraoperative Ultrasound (IOUS) + Palpation (detects >95%).

Question 1

Whipple's triad in insulinoma includes all of the following EXCEPT:

Accepted Answer

ACTH is the treatment of choice

Answer

Symptoms are relieved by glucose intake

Answer

Hypoglycemia below 45 mg/dL

Answer

An attack of hypoglycemia during the fasting state

Question 2

A 30-year-old patient presents with severe upper abdominal pain and elevated serum lipase. A CECT scan was performed and is shown. What is the next line of management?

Accepted Answer

Internal drainage

Answer

Conservative management

Answer

External drainage

Answer

Endoscopic retrograde cholangiopancreatography (ERCP)

Question 3

The "chain of lakes appearance" on ERCP is typically seen in which of the following conditions?

Accepted Answer

Chronic pancreatitis

Answer

Acute pancreatitis

Answer

Pancreatic adenocarcinoma

Answer

Crohn's disease

Question 4

All of the following are true about pancreatic cancer, EXCEPT:

Accepted Answer

The 5-year survival rate is 40%.

Answer

It is usually associated with a poor prognosis.

Answer

The most frequent site is in the head of the pancreas.

Answer

90% of cases are inoperable at the time of diagnosis.

Question 5

Which of the following is FALSE about annular pancreas?

Accepted Answer

Gastrojejunostomy offers the best remedy.

Answer

It is prevalent in Down's syndrome.

Answer

It can cause bilious vomiting.

Answer

A double-bubble sign may be seen on X-ray.

Question 6

Which of the following criteria is NOT included in Ranson's criteria for predicting the severity of pancreatitis?

Accepted Answer

Serum amylase > 350 IU

Answer

WBC > 16000/ul

Answer

Age > 55 years

Answer

Serum AST > 250 U/dl

Question 7

Whipple's operation is done for the treatment of which condition?

Accepted Answer

Carcinoma of the pancreatic head

Answer

Hepatocellular carcinoma

Answer

Small intestinal tumors

Answer

Acute pancreatitis

Question 8

Localization in insulinoma is best with:

Accepted Answer

Selective arteriography

Answer

Contrast Computerised Tomography

Answer

Magnetic Resonance Imaging

Answer

Somatostatin Receptor Scintigraphy

Question 9

A 50-year-old lady presents with a 2-year history of recurrent abdominal pain radiating to her back. The pain is severe and refractory to simple analgesics. Ultrasound abdomen and contrast-enhanced CT scan confirmed the diagnosis and showed a dilated pancreatic duct. Which of the following is the likely recommended surgical procedure of choice?

Accepted Answer

Longitudinal pancreatic jejunostomy

Answer

Vagotomy with antrectomy

Answer

Vagotomy with gastrojejunostomy

Answer

Whipple's procedure

Question 10

Which of the following is NOT a risk factor for post-ERCP pancreatitis?

Accepted Answer

Age > 60 years

Answer

Minor papilla sphincterotomy

Answer

Sphincter of Oddi dysfunction

Answer

Age < 60 years

Pancreatic Surgery — MCQs

Pancreatic Surgery — MCQs

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