**Core Concept:** Pseudocysts of the pancreas are fluid-filled cysts that develop as complications of acute or chronic pancreatitis. They are benign lesions and can be confused with pancreatic malignancies on imaging.

**Why the Correct Answer is Right:** Statement C is false because pseudocysts of the pancreas are benign lesions. In contrast, statement D is true because pseudocysts are a common complication of pancreatitis, often seen in cases of severe acute or chronic pancreatitis. Statement A is true as well, as pseudocysts are fluid-filled cysts that can be misinterpreted as malignant lesions on imaging studies. Statement B is also true, as pseudocysts can lead to complications such as rupture, infection, or obstruction, requiring intervention in some cases.

**Why Each Wrong Option is Incorrect:**

A. False: Pseudocysts are benign lesions, not malignant ones.
B. True: Pseudocysts are common complications of pancreatitis and can be misinterpreted as malignant lesions.
C. False: Pseudocysts are benign lesions, not malignant ones.
D. True: Pseudocysts can lead to complications that require intervention in some cases.

**Clinical Pearl / High-Yield Fact:** Pseudocysts of the pancreas are a consequence of pancreatitis, which can be acute or chronic. Their presence should alert physicians to the possibility of a history of pancreatitis and prompt further evaluation to identify the underlying cause.