Chronic Pancreatitis — MCQs
A 55-year-old white woman has had recurrent episodes of alcohol-induced pancreatitis. Despite abstinence, the patient develops postprandial abdominal pain, bloating, weight loss despite good appetite, and bulky, foul-smelling stools. Kidney, ureter, bladder (KUB) x-ray shows pancreatic calcifications. In this patient, you should expect to find which of the following?
A patient with jaundice is found to have a pancreatic head mass. What is the best diagnostic test?
Pancreatitis is a common complication of which one of the following?
What is the definitive treatment for gallstone-induced pancreatitis?
Which of the following is not a recognized complication of chronic pancreatitis?
All of the following are complications of cirrhosis, EXCEPT:
Monu, a 30-year-old male with a history of chronic alcoholism, presents with sudden onset of epigastric pain that radiates to the back. All are seen except:
Patients with chronic pancreatitis often exhibit a "chain of lakes" appearance in ERCP examinations. Management is?
A 45 year old female presented with a cystic lesion in the lesser sac on CT scan. Endoscopic ultrasound guided aspiration showed amylase to be 500 IU and carcinoembryonic antigen as 500ng/ml. What was she suffering from?
A 60-year-old chronic smoker presented with progressive jaundice, pruritus, and clay-colored stools for 2 months, with a history of waxing and waning of jaundice. A CT scan revealed dilated main pancreatic duct and common bile duct. What is the likely diagnosis?
Chronic Pancreatitis Indian Medical PG Practice Questions and MCQs
Question 1: A 55-year-old white woman has had recurrent episodes of alcohol-induced pancreatitis. Despite abstinence, the patient develops postprandial abdominal pain, bloating, weight loss despite good appetite, and bulky, foul-smelling stools. Kidney, ureter, bladder (KUB) x-ray shows pancreatic calcifications. In this patient, you should expect to find which of the following?
- A. Diabetes mellitus (Correct Answer)
- B. Malabsorption of fat-soluble vitamins D and K
- C. Courvoisier sign
- D. Positive fecal occult blood test
Explanation: Diabetes mellitus - Chronic pancreatitis, especially due to recurrent alcohol-induced episodes, often leads to the destruction of pancreatic islet cells, resulting in impaired insulin production and consequently, diabetes mellitus [1]. - The combination of pancreatic calcifications and symptoms like weight loss despite good appetite, and malabsorption due to pancreatic insufficiency, makes diabetes a strong expected complication [1]. Malabsorption of fat-soluble vitamins D and K - While chronic pancreatitis often causes steatorrhea and malabsorption of fat-soluble vitamins (A, D, E, K), the question asks what one should expect to find, and diabetes mellitus is a more direct and universally expected consequence of widespread pancreatic damage from recurrent pancreatitis [1]. - The symptoms described, such as bulky, foul-smelling stools, are indicative of fat malabsorption, which leads to deficiencies in fat-soluble vitamins, but the direct mention of diabetes mellitus reflects a more advanced stage of pancreatic destruction [2]. Positive fecal occult blood test - A positive fecal occult blood test suggests gastrointestinal bleeding, which is not a direct or typical consequence of chronic pancreatitis itself. - While complications like peptic ulcers or pancreatic cancer (a long-term risk of chronic pancreatitis) could cause GI bleeding, it's not an expected finding directly associated with the pancreatitis symptoms described. Courvoisier sign - Courvoisier sign (a palpable, non-tender gallbladder with jaundice) is typically associated with obstruction of the common bile duct due to a malignancy in the head of the pancreas or other periampullary tumors. - It is not a characteristic finding in uncomplicated chronic pancreatitis, especially without mention of jaundice.
Question 2: A patient with jaundice is found to have a pancreatic head mass. What is the best diagnostic test?
- A. CT scan (Correct Answer)
- B. ERCP
- C. Ultrasound
- D. MRI
Explanation: ***CT scan*** - A **CT scan of the abdomen with contrast** is the initial investigation of choice for suspected pancreatic head mass due to its high diagnostic accuracy [1]. It provides detailed images of the pancreas, surrounding structures, and can help stage the disease [1]. - It effectively visualizes the **mass, evaluates for vascular invasion, and detects metastatic disease**, which are crucial for treatment planning [1]. *ERCP* - **Endoscopic retrograde cholangiopancreatography (ERCP)** is a therapeutic procedure primarily used for bile duct decompression, particularly in cases of obstructive jaundice [2]. - While it can visualize the bile ducts and pancreatic duct, it is **invasive** and not typically used as the primary diagnostic imaging modality for a pancreatic mass itself. *Ultrasound* - **Abdominal ultrasound** can detect a mass and dilated bile ducts, but it is operator-dependent and often has **limited sensitivity** for small pancreatic lesions, particularly in obese patients or those with bowel gas [1]. - It is often used as a first-line screening tool for jaundice but is usually followed by more definitive imaging like CT or MRI due to its **limited detail and penetration**. *MRI* - **Magnetic Resonance Imaging (MRI) with MRCP (Magnetic Resonance Cholangiopancreatography)** provides excellent soft tissue contrast, especially for assessing bile duct obstruction and assessing for vascular invasion [1]. - While highly sensitive, it is **more expensive and less readily available** than CT, making CT the preferred initial diagnostic test.
Question 3: Pancreatitis is a common complication of which one of the following?
- A. Zidovudine
- B. Zalcitabine
- C. Stavudine
- D. Didanosine (ddI) (Correct Answer)
Explanation: ***Didanosine (ddI)*** - **Didanosine (ddI)** is a nucleoside reverse transcriptase inhibitor (NRTI) known for causing dose-dependent **pancreatitis** as a significant adverse effect. - Patients on didanosine require monitoring for symptoms and elevated **amylase/lipase** levels. *Zidovudine* - **Zidovudine** (AZT) is an NRTI primarily associated with **bone marrow suppression** (anemia, neutropenia) and myopathy. - While it can cause lactic acidosis, **pancreatitis** is not its most common or dose-limiting side effect. *Zalcitabine* - **Zalcitabine** (ddC) is an NRTI whose primary dose-limiting toxicity is **peripheral neuropathy**, particularly in the extremities. - **Pancreatitis** is a less common adverse effect compared to didanosine. *Stavudine* - **Stavudine** (d4T) is an NRTI frequently associated with **peripheral neuropathy** and **lipoatrophy** (loss of subcutaneous fat). - Although it can also contribute to lactic acidosis, **pancreatitis** is not its characteristic or most common side effect.
Question 4: What is the definitive treatment for gallstone-induced pancreatitis?
- A. Fasting
- B. Cholecystectomy (Correct Answer)
- C. ERCP
- D. Pancreatic resection
Explanation: ***Cholecystectomy*** * **Cholecystectomy** is the definitive treatment for gallstone-induced pancreatitis because it removes the source of the obstructing gallstones (the gallbladder). * Typically, this procedure is performed once the acute inflammatory process has settled, to prevent recurrent episodes of pancreatitis. *Fasting* * **Fasting** is a supportive measure used to rest the pancreas during an acute pancreatitis attack, but it does not remove the underlying cause of gallstones. * While fasting helps alleviate pain and reduce pancreatic enzyme secretion, it is not a definitive long-term treatment. *ERCP* * **ERCP (Endoscopic Retrograde Cholangiopancreatography)** is primarily used for the *removal of obstructing common bile duct stones* in cases of gallstone pancreatitis, especially if there's evidence of cholangitis or persistent biliary obstruction. * ERCP can remove immediate obstruction but does not prevent future stone formation in the gallbladder, nor does it address the gallbladder itself as the source. *Pancreatic resection* * **Pancreatic resection** is a major surgical procedure reserved for severe complications of pancreatitis, such as necrotizing pancreatitis, or for pancreatic tumors. * It is **not** indicated for routine gallstone-induced pancreatitis and carries significant morbidity and mortality, making it inappropriate for this context.
Question 5: Which of the following is not a recognized complication of chronic pancreatitis?
- A. Renal artery thrombosis (Correct Answer)
- B. Pancreatic pseudocyst
- C. Splenic vein thrombosis
- D. Pancreatic fistula
Explanation: ***Renal artery thrombosis*** - **Renal artery thrombosis** is generally associated with conditions like **atherosclerosis**, atrial fibrillation, or vasculitis, not directly with chronic pancreatitis. - While chronic pancreatitis can lead to systemic complications, direct renal arterial clotting is an atypical and **uncommon sequela**. *Pancreatic pseudocyst* - **Pancreatic pseudocysts** are common complications of chronic pancreatitis, occurring when fluid collections around the pancreas become walled off by fibrous tissue [1]. - They can cause pain, obstruction, and even rupture if left untreated [2]. *Splenic vein thrombosis* - **Splenic vein thrombosis** can result from inflammation and compression of the splenic vein by the diseased pancreatic tissue in chronic pancreatitis [1]. - This can lead to **splenomegaly** and **gastric varices** due to increased pressure in the portal system. *Pancreatic fistula* - A **pancreatic fistula** occurs when pancreatic fluid leaks from the gland, often forming a connection to another organ or the skin [2]. - This is a well-recognized complication of both acute and chronic pancreatitis, usually due to ductal disruption.
Question 6: All of the following are complications of cirrhosis, EXCEPT:
- A. Spontaneous bacterial peritonitis
- B. Portal hypertension
- C. Hepatic encephalopathy
- D. Hypercalcemia (Correct Answer)
Explanation: ***Hypercalcemia*** - While liver disease can lead to **metabolic derangements**, severe hypercalcemia is not a direct or typical complication of **cirrhosis** itself. - Causes of hypercalcemia are usually related to **parathyroid dysfunction**, **malignancy**, or specific drug effects. *Spontaneous bacterial peritonitis* - This is a common and serious infection of the **ascitic fluid** that occurs in patients with cirrhosis, often without an obvious source of infection. - It is a direct consequence of impaired immune function and bacterial translocation in **advanced liver disease**. *Portal hypertension* - This condition is a hallmark of cirrhosis, resulting from increased resistance to blood flow through the fibrotic liver [1]. - It leads to many other complications such as **ascites**, **esophageal varices**, and **splenomegaly** [1]. *Hepatic encephalopathy* - This is a neuropsychiatric syndrome caused by the accumulation of toxins normally cleared by the liver, such as **ammonia**, in the systemic circulation [1]. - It is a significant complication of **cirrhosis** and often indicates advanced liver failure [1].
Question 7: Monu, a 30-year-old male with a history of chronic alcoholism, presents with sudden onset of epigastric pain that radiates to the back. All are seen except:
- A. Hypocalcaemia
- B. Increased serum amylase
- C. Low serum lipase (Correct Answer)
- D. Increased LDH
Explanation: ***Low serum lipase*** - In **acute pancreatitis**, serum lipase levels are typically **elevated**, not low, due to the inflammation and damage to pancreatic acinar cells. - A low serum lipase level would indicate a lack of pancreatic enzyme release, which contradicts the classic presentation of acute pancreatitis. *Increased LDH* - **Lactate dehydrogenase (LDH)** can be elevated in **severe acute pancreatitis**, indicating **tissue necrosis** and cell damage. - Elevated LDH is a marker of organ damage and can be used as an indicator of prognosis in acute pancreatitis, particularly in established scoring systems like Ranson's criteria. *Hypocalcaemia* - **Hypocalcaemia** can occur in acute pancreatitis due to the **saponification of peripancreatic fat** by free fatty acids, which binds calcium. - This is a serious complication, and severe hypocalcemia can lead to adverse outcomes like tetany and cardiac arrhythmias. *Increased serum amylase* - **Elevated serum amylase** is a hallmark finding in **acute pancreatitis**, typically rising within hours of onset. - Amylase levels are generally at least **three times the upper limit of normal** to be diagnostic of acute pancreatitis.
Question 8: Patients with chronic pancreatitis often exhibit a "chain of lakes" appearance in ERCP examinations. Management is?
- A. Total pancreatectomy
- B. Resecting the tail of pancreas and performing a pancreaticojejunostomy
- C. Sphincteroplasty
- D. Side to side pancreaticojejunostomy (Correct Answer)
Explanation: ***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 9: A 45 year old female presented with a cystic lesion in the lesser sac on CT scan. Endoscopic ultrasound guided aspiration showed amylase to be 500 IU and carcinoembryonic antigen as 500ng/ml. What was she suffering from?
- A. Pancreatic adenocarcinoma
- B. Pseudocyst pancreas with ductal communication
- C. Chronic pseudocyst
- D. Mucinous neoplasm of pancreas (Correct Answer)
Explanation: ***Mucinous neoplasm of pancreas*** - **Markedly elevated CEA** (500 ng/ml, well above the threshold of 192 ng/ml) is highly specific for **mucinous cystic neoplasms** (MCN or IPMN). - The presence of **elevated amylase** (500 IU) indicates communication with the pancreatic ductal system, which can occur with **intraductal papillary mucinous neoplasms (IPMN)** or MCN with ductal involvement. - **CEA >192 ng/ml has >90% specificity** for distinguishing mucinous from non-mucinous lesions. - This patient likely has either an **MCN** (mucinous cystadenoma/cystadenocarcinoma) or **IPMN** with malignant potential requiring surgical evaluation. *Pseudocyst pancreas with ductal communication* - Pseudocysts typically have **high amylase** but **low CEA (<5 ng/ml)**. - A CEA of 500 ng/ml essentially **rules out a simple pseudocyst**. - Pseudocysts lack epithelial lining and do not produce CEA. *Chronic pseudocyst* - Similar to acute pseudocyst, chronic pseudocysts have **high amylase but low CEA**. - The markedly elevated CEA (500 ng/ml) makes this diagnosis incorrect. - Would expect CEA <5 ng/ml in pseudocyst fluid. *Pancreatic adenocarcinoma* - Solid pancreatic adenocarcinoma can have elevated CEA, but typically presents as a **solid mass**, not a cystic lesion. - Cyst fluid analysis would show **malignant cells on cytology** and typically **low amylase**. - Does not present as a pure cystic lesion in the lesser sac.
Question 10: A 60-year-old chronic smoker presented with progressive jaundice, pruritus, and clay-colored stools for 2 months, with a history of waxing and waning of jaundice. A CT scan revealed dilated main pancreatic duct and common bile duct. What is the likely diagnosis?
- A. Chronic pancreatitis
- B. Periampullary carcinoma (Correct Answer)
- C. Carcinoma head of pancreas
- D. Hilar cholangiocarcinoma
Explanation: ***Periampullary carcinoma*** - The key feature here is **waxing and waning jaundice**, which is a classic presentation of periampullary carcinoma due to the tumor's location at the ampulla of Vater. - **Mechanism**: The friable tumor tissue can undergo necrosis and sloughing, temporarily relieving the obstruction and causing fluctuating jaundice. - Both **dilated common bile duct and pancreatic duct (double duct sign)** are seen because the tumor involves the ampulla where both ducts converge. - **Chronic smoker** is a risk factor for pancreaticobiliary malignancies. - **Painless obstructive jaundice** with pruritus and clay-colored stools indicates extrahepatic biliary obstruction. *Carcinoma head of pancreas* - While this can also cause the **double duct sign** and obstructive jaundice, it typically presents with **steadily progressive jaundice** rather than waxing and waning. - Pancreatic head tumors cause persistent compression of the CBD, leading to continuous obstruction. - The fluctuating pattern is NOT characteristic of pancreatic head carcinoma. *Chronic pancreatitis* - Can cause dilated ducts and obstructive jaundice due to **fibrotic strictures**, but typically presents with **recurrent abdominal pain** and a history of repeated inflammatory episodes. - Pain is a predominant feature, which is absent in this case. - The clinical picture of painless progressive jaundice favors malignancy over inflammatory disease. *Hilar cholangiocarcinoma* - **Klatskin tumor** affects the confluence of hepatic ducts, causing **intrahepatic bile duct dilation** with normal or minimally dilated distal CBD. - **Pancreatic duct dilation would NOT occur** with hilar cholangiocarcinoma. - The presence of both dilated CBD and pancreatic duct rules this out.
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