Pancreatic Surgery Practice Questions

Q: A lady presented with recurrent attacks of giddiness and abdominal pain since three months. Endoscopy was normal. Her fasting blood glucose was 40 mg% and insulin levels were elevated. CT abdomen showed a well-defined 8 mm enhancing lesion in the head of the pancreas, with no other abnormal findings. What should be the treatment plan for this patient?

Enucleation. ### Explanation **Diagnosis:** The patient presents with the classic **Whipple’s Triad**: symptoms of hypoglycemia (giddiness), low fasting blood glucose (40 mg%), and relief of symptoms upon glucose administration. Elevated insulin levels in the presence of hypoglycemia confirm an **Insulinoma**. The CT finding of a small (8 mm), solitary, enhancing lesion in the pancreatic head is characteristic of this neuroendocrine tumor. **Why Enucleation is the Correct Answer:** 1. **Benign Nature:** Over 90% of insulinomas are solitary and benign. 2. **Size and Location:** For small (<2 cm), solitary, and superficial insulinomas that are not in direct contact with the main pancreatic duct, **Enucleation** is the surgical treatment of choice. It preserves pancreatic exocrine and endocrine function and avoids the morbidity of major resections. **Why Other Options are Incorrect:** * **Whipple’s Operation:** This is a radical resection (Pancreaticoduodenectomy). It is reserved for large, malignant tumors or those involving the main pancreatic duct in the head. It is "overkill" for a small, benign 8 mm lesion. * **Enucleation with Radiotherapy:** Insulinomas are generally not radiosensitive, and radiotherapy is not indicated for benign, localized neuroendocrine tumors. * **Streptozotocin:** This is a chemotherapeutic agent used for metastatic or unresectable malignant insulinomas. It is not a primary treatment for a localized, resectable lesion. **Clinical Pearls for NEET-PG:** * **Most common** islet cell tumor: Insulinoma. * **Rule of 10s:** 10% are malignant, 10% are multiple (often associated with **MEN-1**), and 10% are ectopic. * **Localization:** Intraoperative ultrasound (IOUS) is the most sensitive method to localize the tumor and its relation to the pancreatic duct. * **Medical Management:** Diazoxide can be used pre-operatively to inhibit insulin release and control hypoglycemia.

Q: All of the following statements about Insulinoma are true EXCEPT:

Usually multiple. **Explanation:** Insulinoma is the most common functional neuroendocrine tumor (NET) of the pancreas. The correct answer is **C** because insulinomas are characteristically **solitary (90%)**. Multiple insulinomas are rare (10%) and are strongly associated with **Multiple Endocrine Neoplasia type 1 (MEN1) syndrome**. **Analysis of Options:** * **A. Most commonly found in the pancreas:** This is true. Unlike gastrinomas, which can be extrapancreatic (Gastrinoma triangle), insulinomas are almost exclusively found within the pancreas, distributed equally across the head, body, and tail. * **B. Usually benign:** This is true. Approximately 90% of insulinomas are benign, while only 10% are malignant (defined by the presence of metastases). * **D. Derived from beta cells:** This is true. They originate from the pancreatic islet beta cells and autonomously secrete insulin, leading to fasting hypoglycemia. **High-Yield Clinical Pearls for NEET-PG:** * **Whipple’s Triad:** Essential for diagnosis—(1) Symptoms of hypoglycemia during fasting/exercise, (2) Documented low blood glucose ( 3 µIU/mL) and C-peptide (>0.6 ng/mL) levels despite hypoglycemia. * **Localization:** Intraoperative ultrasound (IOUS) combined with surgical exploration is the most sensitive method for localization. * **Management:** Surgical enucleation is the treatment of choice for solitary benign tumors. Medical management includes **Diazoxide**, which inhibits insulin release.

Q: A chronic alcoholic presents with abdominal pain radiating to the back that responds to analgesics. At evaluation, the pancreatic duct was found to be dilated and stones were noted in the tail of the pancreas. What is the most appropriate management?

Medical management. **Explanation:** The patient presents with classic symptoms of **Chronic Pancreatitis (CP)**. The hallmark of management in CP is a **step-up approach**, starting with the most conservative measures. **Why Medical Management is Correct:** In Chronic Pancreatitis, the primary indication for surgery is **intractable pain** that fails to respond to medical therapy. This patient’s pain currently **responds to analgesics**. Therefore, the initial management must be medical, focusing on lifestyle modifications (alcohol/smoking cessation), pancreatic enzyme replacement therapy (PERT), and a WHO-defined analgesic ladder. Surgery is reserved for patients with "refractory" pain or complications (e.g., biliary obstruction, pseudocysts). **Why Other Options are Incorrect:** * **Pancreatic Tail Resection (Distal Pancreatectomy):** This is only considered if the disease is strictly localized to the tail and medical therapy has failed. It is not the first-line treatment. * **Pancreaticojejunostomy (e.g., Partington-Rochelle procedure):** This is the surgical treatment of choice for a dilated main pancreatic duct (>6 mm) with intractable pain. Since the patient's pain is currently controlled, surgery is premature. * **Percutaneous removal of stones:** This is not a standard or effective treatment for pancreatic calculi. Endoscopic (ERCP/ESWL) or surgical methods are preferred if intervention is indicated. **Clinical Pearls for NEET-PG:** * **Chain of Lakes Appearance:** The classic radiological finding in CP due to alternating segments of dilatation and stenosis in the pancreatic duct. * **Surgical Indications:** Intractable pain (most common), CBD/Duodenal obstruction, or suspicion of malignancy. * **Procedure of Choice:** For a dilated duct (>6mm), **Lateral Pancreaticojejunostomy (Frey’s or Partington-Rochelle)** is preferred. For small duct disease, a **V-shaped excision (Izbicki procedure)** or total pancreatectomy may be considered.

Q: Cullen sign is observed:

Around the umbilicus. **Explanation:** **Cullen’s sign** is defined as superficial edema and bruising (ecchymosis) in the subcutaneous fatty tissue **around the umbilicus**. In the context of acute pancreatitis, it occurs when pancreatic enzymes cause retroperitoneal hemorrhage; this blood then tracks along the falciform ligament to the umbilicus. * **Why Option A is correct:** The anatomical pathway of the falciform ligament leads directly to the periumbilical area, making it the specific site for Cullen’s sign. * **Why Options B, C, and D are incorrect:** * **Flanks:** Bruising here is known as **Grey Turner’s sign**, caused by blood tracking from the pararenal space to the lateral abdominal wall. * **Epigastrium/Back:** While pain often radiates to these areas in pancreatitis, they are not the classic sites for named ecchymotic signs. **Fox’s sign** refers to bruising over the inguinal ligament. **High-Yield Clinical Pearls for NEET-PG:** 1. **Significance:** These signs are not diagnostic of pancreatitis but are indicators of **severe necrotizing pancreatitis** with retroperitoneal hemorrhage. 2. **Prognosis:** Their presence is associated with a higher mortality rate (increased Ranson or APACHE II scores). 3. **Differential Diagnosis:** Besides pancreatitis, Cullen’s sign can be seen in ruptured ectopic pregnancy (the original description by Thomas Cullen), ruptured aortic aneurysm, or perforated duodenal ulcer. 4. **Mnemonic:** **C**ullen = **C**entral (Umbilicus); **G**rey **T**urner = **T**urn to the side (Flanks).

Q: Which artery is most commonly involved in pancreatic pseudoaneurysm?

Splenic artery. ### Explanation **Correct Option: D. Splenic artery** A pancreatic pseudoaneurysm is a life-threatening complication of chronic or acute pancreatitis. It occurs when pancreatic enzymes (especially trypsin) leak and cause autodigestion of the walls of adjacent peripancreatic arteries. The weakened wall dilates, forming a "false" aneurysm. The **Splenic artery** is the most common site (involved in approximately **35–50%** of cases) because of its long, tortuous course along the superior border of the pancreas, making it highly vulnerable to enzymatic erosion from pseudocysts or inflammatory collections in the lesser sac. **Analysis of Incorrect Options:** * **A. Gastroduodenal artery (GDA):** This is the second most common site (approx. 20–25%). It is typically involved in cases where the inflammation is localized to the head of the pancreas. * **B. Inferior pancreaticoduodenal artery:** While it can be involved, it is much less common than the splenic or gastroduodenal arteries. * **C. Gastric artery:** The left gastric artery is rarely involved compared to the major vessels directly bordering the pancreatic parenchyma. **High-Yield Clinical Pearls for NEET-PG:** * **Clinical Presentation:** Classically presents as a sudden "sentinel" bleed into the GI tract (via the pancreatic duct, known as **Hemosuccus Pancreaticus**), or sudden increase in pseudocyst size. * **Gold Standard Investigation:** **Digital Subtraction Angiography (DSA)**—it is both diagnostic and therapeutic. * **Initial Investigation of Choice:** Contrast-enhanced CT (CECT) or CT Angiography. * **Management:** The first-line treatment is **Angiographic Embolization**. Surgery (ligation or distal pancreatectomy) is reserved for hemodynamically unstable patients or failed embolization.

Q: Ranson's scoring for acute pancreatitis includes all except?

LDH >700 IU/L. **Explanation:** Ranson’s Criteria is a clinical prediction rule used to estimate the severity and prognosis of acute pancreatitis. It assesses parameters at two time points: **at admission** and **within 48 hours** of admission. **Why Option D is correct:** In Ranson’s criteria, the threshold for **LDH (Lactate Dehydrogenase)** at admission is **>350 IU/L**. The value mentioned in the option (700 IU/L) is incorrect, making it the "except" choice. **Why the other options are incorrect (They are correct Ranson parameters):** * **Option A (Age >55 years):** This is a standard parameter assessed at admission. Advanced age is associated with poorer physiological reserve. * **Option B (AST >250 IU/L):** Aspartate Aminotransferase (AST) is a marker of hepatocellular injury often seen in severe pancreatitis; >250 IU/L is the correct cutoff at admission. * **Option C (Fluid Sequestration >6 L):** This is a critical parameter assessed within the first 48 hours. It indicates significant third-spacing and systemic inflammatory response. **High-Yield Clinical Pearls for NEET-PG:** To remember Ranson’s Criteria, use the mnemonics: 1. **At Admission (GA LAW):** **G**lucose (>200 mg/dL), **A**ge (>55), **L**DH (>350 IU/L), **A**ST (>250 IU/L), **W**BC count (>16,000/mm³). 2. **At 48 Hours (C HOBBS):** **C**alcium ( 10%), **O**xygen (PaO₂ 5 mg/dL), **B**ase deficit (>4 mEq/L), **S**equestration of fluid (>6 L). *Note:* A Ranson score of 6 indicates severe pancreatitis (mortality ~100% if untreated). For biliary pancreatitis, the cutoffs differ slightly (e.g., Age >70, WBC >18,000).

Q: Which of the following is associated with a poor prognosis in acute pancreatitis?

Hypocalcaemia. **Explanation:** In acute pancreatitis, **Hypocalcaemia** is a well-recognized indicator of severe disease and poor prognosis. It is one of the key parameters included in the **Ranson Criteria** (measured at 48 hours) and the **Modified Glasgow Score**. **Why Hypocalcaemia occurs:** The primary mechanism is **saponification**. During acute pancreatitis, activated pancreatic lipases release free fatty acids from peripancreatic fat. These fatty acids bind to circulating calcium ions to form "calcium soaps" (insoluble salts) in areas of fat necrosis. A serum calcium level of **<8 mg/dL** (or <2 mmol/L) within 48 hours of admission signifies extensive necrotizing process and is associated with increased mortality. **Analysis of Incorrect Options:** * **Hypercalcemia:** While hypercalcemia is a known **etiology** (cause) of acute pancreatitis (due to calcium-induced activation of trypsinogen), it is not a prognostic marker of severity once the disease has started. * **Hypernatremia:** Sodium imbalances are not specific prognostic indicators in pancreatitis. Conversely, **Azotemia** (rising BUN) and fluid sequestration are significant prognostic markers. **NEET-PG High-Yield Pearls:** * **Ranson Criteria at 48 hours:** Remember the mnemonic **C-H-O-B-A-S** (Calcium 10%, Oxygen/PaO2 5, Base deficit >4, Sequestration of fluid >6L). * **Most common cause of death:** In the first week, it is **SIRS/Multiorgan failure**; after two weeks, it is **Sepsis** (infected pancreatic necrosis). * **BISAP Score:** A simple bedside tool (BUN, Impaired mental status, SIRS, Age >60, Pleural effusion) used for early risk stratification.

Q: Which is the most common site of carcinoma of the pancreas?

Head. **Explanation:** **1. Why the Head is the Correct Answer:** Carcinoma of the pancreas most frequently arises from the exocrine portion of the gland (ductal adenocarcinoma). Statistically, approximately **65% to 75%** of pancreatic cancers occur in the **head** of the pancreas. This anatomical preference is clinically significant because tumors in the head often compress the common bile duct early in the disease course, leading to the classic presentation of **painless, progressive obstructive jaundice** (Courvoisier’s Law). **2. Why Other Options are Incorrect:** * **Body (Option B):** Approximately 15% of tumors occur here. * **Tail (Option C):** Approximately 5-10% of tumors occur here. Tumors in the body and tail are often "clinically silent" for longer periods, typically presenting at an advanced stage with weight loss and pain rather than jaundice. * **Neck (Option D):** This is a small transitional zone between the head and body; primary tumors isolated strictly to the neck are relatively rare compared to the head. **3. High-Yield Clinical Pearls for NEET-PG:** * **Most common histological type:** Ductal Adenocarcinoma (>90%). * **Tumor Marker:** **CA 19-9** (primarily used for monitoring response to treatment and recurrence, not screening). * **Courvoisier’s Law:** In the presence of jaundice, if the gallbladder is palpable, the jaundice is unlikely to be due to gallstones (it points towards malignancy of the pancreatic head or periampullary region). * **Surgical Management:** The standard of care for resectable tumors of the head is **Whipple’s Procedure** (Pancreaticoduodenectomy), whereas tumors of the body/tail require a **Distal Pancreatectomy** with Splenectomy. * **Risk Factors:** Smoking (strongest environmental factor), chronic pancreatitis, and DM.

Question 1

A lady presented with recurrent attacks of giddiness and abdominal pain since three months. Endoscopy was normal. Her fasting blood glucose was 40 mg% and insulin levels were elevated. CT abdomen showed a well-defined 8 mm enhancing lesion in the head of the pancreas, with no other abnormal findings. What should be the treatment plan for this patient?

Accepted Answer

Enucleation

Answer

Whipple's operation

Answer

Enucleation with radiotherapy

Answer

Administration of streptozotocin

Question 2

A 62-year-old man complains of experiencing intermittent, but increasing abdominal pain, and has had a 9 kg weight loss in the last month. On physical examination, he seems to be slightly jaundiced. Alkaline phosphatase and bilirubin are increased. CT scan demonstrates a mass in the head of the pancreas. Which of the following surgical methods is used most often to treat patients with small tumors of the head of the pancreas with no evidence of metastasis?

Accepted Answer

Whipple procedure

Answer

Billroth I procedure

Answer

Billroth II procedure

Answer

Roux-en-Y gastric bypass

Question 3

All of the following statements about Insulinoma are true EXCEPT:

Accepted Answer

Usually multiple

Answer

Most commonly found in the pancreas

Answer

Usually benign

Answer

Derived from beta cells

Question 4

A chronic alcoholic presents with abdominal pain radiating to the back that responds to analgesics. At evaluation, the pancreatic duct was found to be dilated and stones were noted in the tail of the pancreas. What is the most appropriate management?

Accepted Answer

Medical management

Answer

Pancreatic tail resection

Answer

Pancreaticojejunostomy

Answer

Percutaneous removal of stones

Question 5

Cullen sign is observed:

Accepted Answer

Around the umbilicus

Answer

In the flanks

Answer

In the epigastrium

Answer

In the back

Question 6

Which artery is most commonly involved in pancreatic pseudoaneurysm?

Accepted Answer

Splenic artery

Answer

Gastroduodenal artery

Answer

Inferior pancreaticoduodenal artery

Answer

Gastric artery

Question 7

Which of the following is FALSE regarding carcinoma of the pancreas?

Accepted Answer

Acute pancreatitis never occurs in carcinoma of the pancreas.

Answer

The most common site is the head and uncinate process.

Answer

Pain suggests unresectability.

Answer

Two-thirds of patients present with diabetes.

Question 8

Ranson's scoring for acute pancreatitis includes all except?

Accepted Answer

LDH >700 IU/L

Answer

Age >55 years

Answer

Serum AST >250 IU/dL

Answer

Sequestration of fluid >6 L

Question 9

Which of the following is associated with a poor prognosis in acute pancreatitis?

Accepted Answer

Hypocalcaemia

Answer

Hypercalcemia

Answer

Hypernatremia

Answer

All of the above

Question 10

Which is the most common site of carcinoma of the pancreas?

Accepted Answer

Head

Answer

Body

Answer

Tail

Answer

Neck

Pancreatic Surgery — MCQs

Pancreatic Surgery — MCQs

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