This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
A symptomatic patient underwent investigations and found out a pancreatic cyst of 7 cm in size. What is the treatment of choice for this patient? 
Select and explain. 
A. External drainage, B. Internal drainage, C. Resection of head of pancreas, D. Antibiotics
B: Internal drainage
Answer: B: Internal drainage 
Explanation: Pancreatic pseudocysts are a well-known complication of acute or chronic pancreatitis. There are different therapeutic strategies: endoscopic transpapillary or transmural drainage, percutaneous catheter drainage or open surgery. Percutaneous drainage is used for infected pseudocysts. Internal drainage and pseudocyst resection are frequently used as surgical approaches with a good overall outcome.