This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pancreas, Subject name: Medicine
Most common complication of acute pancreatitis is: 
Select and explain. 
A. Pancreatic abscess, B. Pseudocyst, C. Phlegmon, D. Pleural effusion
B: Pseudocyst
Answer: B: Pseudocyst 
Explanation: Ans. is 'b' Pseudocyst (Ref Schwartz Handbook, 7/e, p. 704, Harrison 17/e p 2011)."Pseudocyst is the most common complication usually occurring after 2-3 weeks" - Schwartz Handbook, 7/e, p. 704.