Pancreatic Surgery Practice Questions

Q: Which of the following is a valid imaging criterion for unresectable carcinoma of the pancreas?

Encasement of the superior mesenteric artery. ***Encasement of the superior mesenteric artery*** - **Encasement** (defined as >180-degree circumferential contact) of the **superior mesenteric artery (SMA)** is a definitive **local imaging criterion** for unresectable pancreatic cancer per NCCN guidelines. - This represents the classic teaching point for imaging-based assessment of resectability based on tumor-vessel relationships. - SMA encasement precludes safe surgical resection with negative margins. *Invasion of the duodenal wall* - Duodenal wall invasion is typically managed during **pancreaticoduodenectomy (Whipple procedure)** with en-bloc resection of the duodenum. - Isolated duodenal invasion does not render the tumor unresectable and is expected in most pancreatic head tumors. *Metastatic spread to vertebrae* - While **distant metastases** (including vertebral metastases) absolutely indicate unresectability, they represent **systemic spread** rather than a local imaging criterion for assessing primary tumor resectability. - In clinical practice, the assessment of resectability based on imaging primarily focuses on **local tumor-vessel relationships** (SMA, celiac axis, portal vein, SMV). - Metastatic disease is typically categorized separately under staging rather than resectability criteria based on locoregional anatomy. *Irregular increase in density of omental fat* - Increased omental fat density may suggest **peritoneal carcinomatosis** but is non-specific and not a definitive criterion. - Requires tissue confirmation and is not a standard imaging criterion for determining unresectability.

Q: The Modified-Kausch-Whipple operation is performed to preserve which part of the stomach?

Pyloric antrum of the stomach. ***Pyloric antrum of the stomach*** - The **Modified-Kausch-Whipple operation**, also known as **pylorus-preserving pancreaticoduodenectomy (PPPD)**, specifically aims to preserve the **pyloric antrum** and a small portion of the duodenum. - Preserving the pyloric antrum helps maintain normal **gastric emptying** and reduces the incidence of **dumping syndrome** compared to traditional Whipple procedures. *Fundus of the stomach* - The **fundus** is the upper part of the stomach, located above the level of the cardia. - Its preservation is not a distinguishing feature or specific goal of the **Modified-Kausch-Whipple operation**. *Body of the stomach* - The **body of the stomach** is the main central part of the stomach, between the fundus and the pyloric antrum. - While most of the stomach body is typically preserved in this procedure, the preservation of the **pyloric antrum** is the defining characteristic. *Lesser curvature of the stomach* - The **lesser curvature** is the shorter, concave medial border of the stomach. - Its preservation is not the primary focus of the **Modified-Kausch-Whipple operation**; the emphasis is on the pylorus.

Q: Which of the following is resected in Whipple's operation, except?

Neck of pancreas. ***Neck of pancreas*** - In a **Whipple procedure** (pancreaticoduodenectomy), the **neck of the pancreas** is the site of transection (division), not resection. - The pancreas is divided at the neck, and the remaining **body and tail** are preserved and anastomosed to the jejunum for pancreatic drainage. *Duodenum* - The **entire duodenum** is resected during a Whipple operation as it shares intimate anatomical relations with the pancreatic head. - Complete duodenal removal is necessary to achieve adequate **oncological margins** and remove all associated lymphatic drainage. *Head of pancreas* - The **head of the pancreas** is the primary structure resected in a Whipple procedure. - This resection is typically performed for **pancreatic adenocarcinoma** or **periampullary tumors** requiring en bloc removal. *Common bile duct* - The **distal common bile duct** is resected as part of the specimen to ensure complete tumor excision. - The remaining **proximal bile duct** is reconstructed via **hepaticojejunostomy** to restore biliary drainage.

Q: Which of the following is not considered a contraindication for pancreaticoduodenectomy?

Portal vein involvement. ***Portal vein involvement*** - While extensive portal vein invasion can make the procedure challenging, **segmental portal vein involvement without complete occlusion or direct invasion of the superior mesenteric artery** is often considered resectable with venous reconstruction and is not an absolute contraindication. - Advancements in surgical techniques and patient selection criteria allow for **safe resection and reconstruction of the portal vein** in carefully chosen cases, improving outcomes for patients who would otherwise be deemed inoperable. *Metastasis* - The presence of **distant metastases** (e.g., to the liver, peritoneum, or lungs) unequivocally indicates **Stage IV disease** and is an absolute contraindication to pancreaticoduodenectomy, as the surgery would not offer a curative benefit. - In such cases, systemic chemotherapy or palliative care is the more appropriate treatment approach, as resection would not alter the overall prognosis. *Stage III CA head of pancreas* - **Stage III carcinoma of the head of the pancreas** often implies **locally advanced disease** that involves major peripancreatic vessels, such as the superior mesenteric artery or celiac axis. - This level of extensive vascular involvement typically renders the tumor **unresectable**, making pancreaticoduodenectomy surgically unfeasible and a contraindication. *Extensive invasion of superior mesenteric vein* - **Extensive involvement of the superior mesenteric vein (SMV)**, particularly if it completely occludes the lumen or involves a long segment making reconstruction impossible, is generally considered a contraindication to pancreaticoduodenectomy. - While limited SMV involvement with reconstructive options might be resectable, **extensive, unreconstructable invasion** signifies locally advanced disease beyond surgical cure.

Q: All of the following statements about pseudopancreatic cysts are true except:

Serum amylase levels are increased. ***Serum amylase levels are increased*** - This is the **false statement**. While **acute pancreatitis** causes elevated serum amylase, a **pseudopancreatic cyst** is a late complication (typically developing 4+ weeks after acute pancreatitis), and by this time serum amylase levels have usually **normalized**. - The mature pseudocyst itself does not actively produce or leak amylase into the bloodstream, distinguishing it from acute pancreatic inflammation. *Presents as an epigastric mass* - **True statement**. Pancreatic pseudocysts frequently present as a **palpable epigastric mass** due to their location in the lesser sac and potential to grow quite large (often >5-6 cm). - Patients may report a sensation of fullness or visible abdominal swelling. *May require percutaneous aspiration for diagnosis* - **True statement**. Percutaneous aspiration can be used for **diagnostic purposes** to differentiate pseudocysts from cystic neoplasms by analyzing fluid amylase levels and cytology. - It may also provide temporary symptomatic relief, though it has high recurrence rates as definitive treatment. *Cystojejunostomy is treatment of choice* - **True statement** in the context of **surgical management**. When internal surgical drainage is indicated for large, symptomatic, or complicated pseudocysts, **cystojejunostomy** (or cystogastrostomy/cystoduodenostomy) is preferred. - Current practice favors endoscopic drainage first, but surgical internal drainage remains gold standard when endoscopy is not feasible or fails.

Q: Major complication of cystogastrostomy for pancreatic pseudocyst is

Hemorrhage. **Hemorrhage** - Major complication is **hemorrhage** from the draining cyst due to the **highly vascularized wall** of the pseudocyst. - This can be caused by the trauma of insertion or subsequent erosion. *Infection* - While infection can occur, it is less common than hemorrhage and often managed with antibiotics. - The formation of a **fistula** is another complication that can lead to infection, but not the primary major one. *Obstruction* - Obstruction is a potential complication if the stoma closes, preventing effective drainage. - This is usually managed by **re-stenting** or **re-intervention**, and not always life-threatening. *Fistula* - A fistula, particularly a pancreaticocutaneous fistula, can occur if the cyst **leaks through the abdominal wall**. - While serious, it is not as acutely life-threatening as sudden or severe hemorrhage.

Q: What is the type of incision commonly used in pancreaticoduodenectomy?

Chevron incision. ***Chevron incision*** - A **chevron incision** (also known as a rooftop or bilateral subcostal incision) provides **excellent exposure** to the upper abdomen, making it ideal for complex procedures like **pancreaticoduodenectomy** (Whipple procedure). - This incision allows for wide access to the **pancreas**, **duodenum**, **biliary tree**, and **major vessels**, facilitating the extensive dissection and reconstruction required. *Kocher's incision* - **Kocher's incision** is a right subcostal incision typically used for procedures on the **gallbladder** and **biliary tree**. - It does not offer sufficient exposure for the extensive and multi-quadrant dissection required during a **pancreaticoduodenectomy**. *Lanz incision* - A **Lanz incision** is a short, oblique incision in the right lower quadrant, primarily used for **appendectomy**. - This incision is far too small and incorrectly located to be used for any upper abdominal surgery, let alone a **pancreaticoduodenectomy**. *Maylard incision* - The **Maylard incision** is a transverse incision made in the lower abdomen, commonly used for **gynecological** and **urological** procedures. - It is unsuitable for upper abdominal operations such as a **pancreaticoduodenectomy** due to its low anatomical position.

Q: Patients with chronic pancreatitis often exhibit a "chain of lakes" appearance in ERCP examinations. Management is?

Side to side pancreaticojejunostomy. ***Side to side pancreaticojejunostomy*** - This procedure, specifically a **Puestow procedure**, is the gold standard for managing painful chronic pancreatitis with a dilated main pancreatic duct (≥6-7 mm) and multiple strictures, presenting as a "chain of lakes" on ERCP. - It involves dividing the small bowel, closing one end, and connecting the other to a longitudinal incision made along the dilated pancreatic duct, thereby allowing drainage of pancreatic secretions into the jejunum and alleviating pain. *Total pancreatectomy* - This is a highly morbid procedure reserved for very severe cases of chronic pancreatitis that are refractory to other treatments, often associated with unmanageable pain and severe exocrine and endocrine insufficiency. - It would necessitate lifelong **enzyme replacement therapy** and **insulin for diabetes**, indicating its use as a last resort. *Sphincteroplasty* - This procedure involves widening the sphincter of Oddi and is primarily used for **biliary obstruction** or **pancreatitis secondary to sphincter dysfunction**, not for the widespread strictures and dilated ducts typical of chronic pancreatitis with a "chain of lakes" appearance. - While it can improve drainage, it does not address the extensive ductal pathology seen in many cases of chronic pancreatitis with multiple strictures. *Resecting the tail of pancreas and performing a pancreaticojejunostomy* - This describes a **distal pancreatectomy with pancreaticojejunostomy**, which is suitable for lesions or pathologies primarily confined to the **body or tail of the pancreas**, such as certain tumors or cysts. - It would not effectively address the diffuse ductal changes and multiple strictures throughout the entire pancreas that cause the "chain of lakes" appearance in chronic pancreatitis, which usually requires decompression of the entire duct system.

Question 1

Which of the following is a valid imaging criterion for unresectable carcinoma of the pancreas?

Accepted Answer

Encasement of the superior mesenteric artery

Answer

Invasion of the duodenal wall

Answer

Metastatic spread to vertebrae

Answer

Irregular increase in density of omental fat

Question 2

The Modified-Kausch-Whipple operation is performed to preserve which part of the stomach?

Accepted Answer

Pyloric antrum of the stomach

Answer

Fundus of the stomach

Answer

Body of the stomach

Answer

Lesser curvature of the stomach

Question 3

What is the most appropriate investigation for diagnosing carcinoma of the head of the pancreas?

Accepted Answer

CT scan of the pancreas

Answer

MRI of the pancreas

Answer

ERCP for pancreatic evaluation

Answer

EUS for pancreatic evaluation

Question 4

Which of the following is resected in Whipple's operation, except?

Accepted Answer

Neck of pancreas

Answer

Duodenum

Answer

Head of pancreas

Answer

Common bile duct

Question 5

A 35 year old male came with jaundice, palpable mass in the right hypochondrium not associated with pain. The probable diagnosis is -

Accepted Answer

Pancreatic head carcinoma

Answer

Hepatocellular carcinoma

Answer

Choledochal cyst

Answer

Acute cholecystitis

Question 6

Which of the following is not considered a contraindication for pancreaticoduodenectomy?

Accepted Answer

Portal vein involvement

Answer

Metastasis

Answer

Extensive invasion of superior mesenteric vein

Answer

Stage III CA head of pancreas

Question 7

All of the following statements about pseudopancreatic cysts are true except:

Accepted Answer

Serum amylase levels are increased

Answer

Presents as an epigastric mass

Answer

Cystojejunostomy is treatment of choice

Answer

May require percutaneous aspiration for diagnosis

Question 8

Major complication of cystogastrostomy for pancreatic pseudocyst is

Accepted Answer

Hemorrhage

Answer

Infection

Answer

Obstruction

Answer

Fistula

Question 9

What is the type of incision commonly used in pancreaticoduodenectomy?

Accepted Answer

Chevron incision

Answer

Lanz incision

Answer

Maylard incision

Answer

Kocher's incision

Question 10

Patients with chronic pancreatitis often exhibit a "chain of lakes" appearance in ERCP examinations. Management is?

Accepted Answer

Side to side pancreaticojejunostomy

Answer

Total pancreatectomy

Answer

Resecting the tail of pancreas and performing a pancreaticojejunostomy

Answer

Sphincteroplasty

Pancreatic Surgery — MCQs

Pancreatic Surgery — MCQs

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