Pancreatic Pseudocysts — MCQs
True about pancreatic pseudocysts is:
All of the following statements about pseudopancreatic cysts are true except:
A 55-year-old male, known smoker, complains of calf pain while walking. He experiences calf pain while walking but can continue walking with effort. Which grade of claudication does this patient fall under?
A chronic alcoholic patient came to emergency with severe pain in epigastrium and multiple episodes of vomiting. On examination, guarding was present in upper epigastrium. Chest X-ray was normal. What is the next best step?
Type of necrosis in pancreatitis-
In cystic fibrosis, which of the following structures is affected in the pancreas?
A 35 year old woman presented with a lump in her upper abdomen for two months which was slightly increasing. She also complained of early satiety. She gave a history of acute severe pain in upper abdomen for which she was admitted in hospital for 10 days, about three months ago. On examination, the mass was firm, smooth surfaced and not moving with respiration. She was most likely suffering from:
Which of the following are local complications of acute pancreatitis? 1. Pseudocyst 2. Pleural effusion 3. Ileus 4. Acute fluid collection Select the correct answer using the code given below.
Enteropeptidase enzyme is secreted by:
Which of the following statements regarding annular pancreas is INCORRECT? 1. It results from failure of rotation of ventral pancreatic bud during development. 2. A ring of pancreatic tissue surrounds the second or third part of duodenum. 3. It presents with vomiting due to duodenal obstruction. 4. Duodenoduodenostomy is the preferred treatment of this condition.
Pancreatic Pseudocysts Indian Medical PG Practice Questions and MCQs
Question 1: True about pancreatic pseudocysts is:
- A. No epithelial lining (Correct Answer)
- B. Develops after 4 weeks
- C. Contains solid components
- D. Always needs surgery
Explanation: ***No epithelial lining*** - A pancreatic pseudocyst is defined by its lack of a true **epithelial lining**, distinguishing it from other cystic lesions of the pancreas. - Instead, its wall is formed by **fibrous and granulation tissue** surrounding a collection of pancreatic enzymes, inflammatory exudates, and necrotic debris. *Develops after 4 weeks* - While many pseudocysts do develop after an acute pancreatitis episode, the 4-week timeline is more specifically associated with the definition of a **pancreatic collection becoming a mature pseudocyst**. - However, pseudocysts can sometimes be observed earlier, and the defining characteristic is the absence of epithelium, not the time of formation. *Contains solid components* - Pancreatic pseudocysts are typically **fluid-filled collections** with a relatively uniform, anechoic appearance on imaging studies. - The presence of significant **solid components** would suggest a different lesion, such as a cystic tumor or a walled-off necrosis, rather than a simple pseudocyst. *Always needs surgery* - Many pancreatic pseudocysts, particularly smaller ones, can **resolve spontaneously** and thus do not always require surgical intervention. - Treatment often depends on size, symptoms, complications, and the duration of the pseudocyst, with conservative management or endoscopic drainage being viable options in many cases.
Question 2: All of the following statements about pseudopancreatic cysts are true except:
- A. Serum amylase levels are increased (Correct Answer)
- B. Presents as an epigastric mass
- C. Cystojejunostomy is treatment of choice
- D. May require percutaneous aspiration for diagnosis
Explanation: ***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.
Question 3: A 55-year-old male, known smoker, complains of calf pain while walking. He experiences calf pain while walking but can continue walking with effort. Which grade of claudication does this patient fall under?
- A. Grade I (Mild claudication)
- B. Grade II (Moderate claudication) (Correct Answer)
- C. Grade III (Severe claudication)
- D. Grade IV (Ischemic rest pain)
Explanation: ***Grade II (Moderate claudication)*** - **Grade II claudication** is characterized by **intermittent claudication** where the patient experiences pain while walking but can **continue walking with effort**. - This level of claudication reflects a moderate degree of peripheral arterial disease, where blood flow is sufficiently compromised to cause pain with exertion but not severe enough to force immediate cessation of activity. - The patient in this scenario can continue ambulation despite discomfort, which is the defining feature of this grade. *Grade I (Mild claudication)* - **Grade I claudication** involves discomfort or pain that the patient can **tolerate without significantly altering their gait or pace**. - In this stage, the pain is minimal, and the patient may perceive it as a dull ache or mild fatigue rather than true pain. - Walking can continue without significant effort or limitation. *Grade III (Severe claudication)* - **Grade III claudication** is marked by pain that is **severe enough to stop the patient from walking within a short distance** (typically less than 200 meters). - The pain forces the patient to rest and recover before they can resume walking. - This represents significant functional limitation in daily activities. *Grade IV (Ischemic rest pain)* - **Grade IV**, also known as **critical limb ischemia**, involves **pain even at rest**, especially in the feet or toes, often worsening at night when the limb is elevated. - This stage indicates severe arterial obstruction and is frequently associated with **ulcers, non-healing wounds, or gangrene**. - This represents advanced peripheral arterial disease requiring urgent intervention. **Note:** This grading system is a simplified clinical classification. The standard medical classifications for peripheral arterial disease are the **Fontaine classification** (Stages I-IV) and **Rutherford classification** (Categories 0-6).
Question 4: A chronic alcoholic patient came to emergency with severe pain in epigastrium and multiple episodes of vomiting. On examination, guarding was present in upper epigastrium. Chest X-ray was normal. What is the next best step?
- A. CECT
- B. Alcohol breath test
- C. Serum lipase (Correct Answer)
- D. Upper GI endoscopy
Explanation: ***Serum lipase*** - The patient's presentation with acute epigastric pain, vomiting, guarding, and a history of chronic alcoholism strongly suggests **acute pancreatitis** [1]. - **Serum lipase** is highly sensitive and specific for diagnosing acute pancreatitis, with levels typically elevated to at least three times the upper limit of normal. *CECT* - While **CECT (Contrast-Enhanced Computed Tomography)** is excellent for assessing the severity and complications of pancreatitis, it is generally not the initial diagnostic test for suspected acute pancreatitis [1]. - CT scans are usually performed if the diagnosis is unclear or if complications like **necrosis** or **fluid collections** are suspected after initial laboratory tests. *Alcohol breath test* - An **alcohol breath test** would confirm recent alcohol consumption but does not directly diagnose the cause of the patient's acute abdominal pain [2]. - While chronic alcoholism is a risk factor for pancreatitis, this test does not provide specific information about the underlying medical emergency. *Upper GI endoscopy* - **Upper GI endoscopy** is primarily used to evaluate conditions affecting the esophagus, stomach, and duodenum, such as **ulcers** or **gastritis**. - It would not be the initial diagnostic step for suspected pancreatitis, as it does not directly visualize the pancreas and carries risks in an acutely ill patient.
Question 5: Type of necrosis in pancreatitis-
- A. Coagulative
- B. Caseous
- C. Fibrinoid
- D. Fat (Correct Answer)
Explanation: ***Fat*** - In pancreatitis, the release of **lipases** from damaged pancreatic cells leads to the breakdown of fat cells, resulting in the formation of **fatty acids** and **glycerol** [1]. - These fatty acids then combine with calcium to form **calcium soaps**, which appear as white, chalky deposits and signify **fat necrosis** [1]. *Coagulative* - This type of necrosis typically occurs due to **ischemia** (lack of blood supply) in solid organs, preserving the outline of the cells for a period [1]. - While ischemia can play a role in severe pancreatitis, the primary and distinctive type of necrosis in this condition is not coagulative. *Caseous* - **Caseous necrosis** is characteristic of **tuberculosis** and certain fungal infections, where the tissue has a crumbly, cheese-like appearance [1]. - It involves a combination of liquefactive and coagulative necrosis, but it is not seen in pancreatitis. *Fibrinoid* - **Fibrinoid necrosis** is often associated with **immune-mediated vascular damage**, such as in cases of **vasculitis** or **malignant hypertension** [2]. - It involves the deposition of immune complexes and fibrin in arterial walls, which is not the primary necrotic process in pancreatitis. **References:** [1] Kumar V, Abbas AK, et al.. Robbins and Cotran Pathologic Basis of Disease. 9th ed. Cellular Responses to Stress and Toxic Insults: Adaptation, Injury, and Death, pp. 53-55. [2] Cross SS. Underwood's Pathology: A Clinical Approach. 6th ed. (Basic Pathology) introduces the student to key general principles of pathology, both as a medical science and as a clinical activity with a vital role in patient care. Part 2 (Disease Mechanisms) provides fundamental knowledge about the cellular and molecular processes involved in diseases, providing the rationale for their treatment. Part 3 (Systematic Pathology) deals in detail with specific diseases, with emphasis on the clinically important aspects., pp. 103-104.
Question 6: In cystic fibrosis, which of the following structures is affected in the pancreas?
- A. Acinar cells
- B. Islets of Langerhans
- C. Pancreatic ducts (Correct Answer)
- D. Stromal tissue
Explanation: ***Pancreatic ducts*** - In cystic fibrosis, the **CFTR protein** dysfunction leads to thick, viscous secretions that obstruct the **pancreatic ducts** [2]. - This obstruction prevents digestive enzymes from reaching the intestine, causing **malabsorption** and progressive pancreatic damage [2]. *Acinar cells* - While pancreatic acinar cells are responsible for producing digestive enzymes, they are not directly dysfunctional in cystic fibrosis. - Their function is secondarily impaired due to the **blockage of the ducts** that carry their secretions [2]. *Islets of Langerhans* - The **islets of Langerhans** contain endocrine cells (e.g., insulin-producing beta cells) and are generally unaffected early in cystic fibrosis [1]. - Long-standing inflammation and fibrosis in severe cases can eventually impair islet function, leading to **CF-related diabetes** [1]. *Stromal tissue* - Stromal tissue (supporting connective tissue) is not the primary site of pathology in cystic fibrosis. - While chronic inflammation may lead to **fibrosis** of stromal tissue over time, the initial and primary defect is in the **ductal obstruction**, not in the stroma itself. **References:** [1] Kumar V, Abbas AK, et al.. Robbins and Cotran Pathologic Basis of Disease. 9th ed. The Pancreas, pp. 893-895. [2] Kumar V, Abbas AK, et al.. Robbins and Cotran Pathologic Basis of Disease. 9th ed. The Gastrointestinal Tract, p. 789.
Question 7: A 35 year old woman presented with a lump in her upper abdomen for two months which was slightly increasing. She also complained of early satiety. She gave a history of acute severe pain in upper abdomen for which she was admitted in hospital for 10 days, about three months ago. On examination, the mass was firm, smooth surfaced and not moving with respiration. She was most likely suffering from:
- A. Pseudocyst pancreas (Correct Answer)
- B. Cancer colon
- C. Splenic cyst
- D. Cancer stomach
Explanation: Pseudocyst pancreas - The history of **acute severe upper abdominal pain** followed by a progressively enlarging, firm, smooth-surfaced upper abdominal mass points strongly towards a pancreatic pseudocyst, a common complication of **pancreatitis** [1]. - **Early satiety** can occur due to the mass effect of the pseudocyst compressing the stomach [1]. *Cancer colon* - A rapidly growing upper abdominal mass is **not a typical presentation** of colon cancer, which usually presents with changes in bowel habits, rectal bleeding, or weight loss. - Colon cancer does not typically cause a history of **acute, severe generalized abdominal pain** preceding mass formation in this manner. *Splenic cyst* - While a splenic cyst could present as an abdominal mass, it is **less likely to follow a history of acute severe abdominal pain** (unless trauma-related). - A history of acute pancreatitis is a strong indicator away from a splenic cyst as the primary diagnosis [1]. *Cancer stomach* - Gastric cancer can present with early satiety and an upper abdominal mass, but the specific history of **acute severe pain followed by a mass** is less characteristic of gastric cancer's typical insidious onset. - The "firm, smooth surfaced, not moving with respiration" description, especially in the context of prior pancreatitis, is more aligned with a **pancreatic pseudocyst** [1].
Question 8: Which of the following are local complications of acute pancreatitis? 1. Pseudocyst 2. Pleural effusion 3. Ileus 4. Acute fluid collection Select the correct answer using the code given below.
- A. 2, 3 and 4
- B. 1, 3 and 4
- C. 1, 2 and 4 (Correct Answer)
- D. 1, 2 and 3
Explanation: ***1, 2 and 4*** - **Pseudocyst**, **acute fluid collections**, and **pleural effusions** are all recognized **local complications** of acute pancreatitis due to their direct anatomical proximity or fluid spread from the pancreas [1]. - **Ileus** is a common **systemic complication** rather than a local one, and it arises from inflammation and irritation of the bowel. *2, 3 and 4* - This option correctly identifies **pleural effusion** and **acute fluid collection** as local complications, but **ileus** is typically classified as a **systemic complication** of acute pancreatitis. - While it includes two correct local complications, the inclusion of ileus makes it incorrect as a complete list of local complications. *1, 3 and 4* - This option correctly identifies **pseudocyst** and **acute fluid collection** as local complications, but incorrectly lists **ileus** as a local complication when it is a **systemic complication** [1]. - It also fails to include **pleural effusion**, which is a significant local complication. *1, 2 and 3* - This option correctly identifies **pseudocyst** and **pleural effusion** as local complications but incorrectly includes **ileus**, which is a **systemic complication**. - It also omits **acute fluid collection**, an important local complication of acute pancreatitis.
Question 9: Enteropeptidase enzyme is secreted by:
- A. Ileum
- B. Duodenum (Correct Answer)
- C. Stomach
- D. Jejunum
Explanation: ***Duodenum*** - **Enteropeptidase** (also known as enterokinase) is a key enzyme primarily secreted by the mucosal cells of the **duodenum**. - Its main function is to activate **trypsinogen** (from the pancreas) into **trypsin**, initiating a cascade of protein digestion. *Ileum* - The ileum is primarily involved in the absorption of **vitamin B12** and **bile salts**. - It does not significantly contribute to the secretion of digestive enzymes like enteropeptidase. *Stomach* - The stomach secretes **pepsin** (to digest proteins) and **hydrochloric acid**, and is involved in initial protein digestion. - It does not produce enteropeptidase, which acts much later in the digestive process. *Jejunum* - The jejunum is a major site for the absorption of **nutrients** like carbohydrates, fats, and proteins. - While it has some brush border enzymes, the primary secretion of enteropeptidase occurs in the duodenum.
Question 10: Which of the following statements regarding annular pancreas is INCORRECT? 1. It results from failure of rotation of ventral pancreatic bud during development. 2. A ring of pancreatic tissue surrounds the second or third part of duodenum. 3. It presents with vomiting due to duodenal obstruction. 4. Duodenoduodenostomy is the preferred treatment of this condition.
- A. 4. Duodenoduodenostomy is the preferred treatment of this condition. (Correct Answer)
- B. 3. It presents with vomiting due to duodenal obstruction.
- C. 1. It results from failure of rotation of ventral pancreatic bud during development.
- D. 2. A ring of pancreatic tissue surrounds the second part of duodenum.
Explanation: ***Correct Answer: 4. Duodenoduodenostomy is the preferred treatment of this condition.*** - This statement is **INCORRECT** and hence the correct answer to this question. - The preferred surgical treatment for symptomatic annular pancreas is a **bypass procedure** such as **duodenojejunostomy** or **gastrojejunostomy**, NOT duodenoduodenostomy. [1], [3] - The goal is to **relieve duodenal obstruction** without resecting pancreatic tissue, which carries high risk of complications including pancreatitis and pancreatic fistula. *Incorrect Option 1: It results from failure of rotation of ventral pancreatic bud during development.* - This statement is **correct**. - Annular pancreas is a rare **congenital anomaly** caused by abnormal **rotation and fusion of the ventral pancreatic bud** with the dorsal bud during embryonic development, resulting in pancreatic tissue encircling the duodenum. *Incorrect Option 2: A ring of pancreatic tissue surrounds the second or third part of duodenum.* - This statement is **correct**. - Annular pancreas is characterized by a **ring of pancreatic tissue** that encircles the **second part of the duodenum** (most commonly), though the third part can occasionally be involved. *Incorrect Option 3: It presents with vomiting due to duodenal obstruction.* - This statement is **correct**. - The classic presentation includes **vomiting due to duodenal obstruction**, which can be complete or partial. [2] - In neonates, this manifests as **bilious vomiting** and feeding intolerance; in adults, postprandial fullness and recurrent vomiting are common. [2]
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