Which description best defines a pseudocyst in pancreatic pathology?

Which description best defines a pseudocyst in pancreatic pathology?

• A. Abscess
• B. Phlegmon
• C. Pseudocyst
• D. Ascites

Answer: (C)

Pancreatic pseudocysts are localized fluid collections that occur after pancreatitis. The defining feature is that they are surrounded by a fibrous or granulation tissue wall but lack an epithelial lining. This absence of an epithelial lining distinguishes a pseudocyst from a true cyst, which would have an epithelial lining. The fluid inside is typically rich in pancreatic enzymes and can result from leakage of pancreatic juice into the surrounding tissue, becoming encapsulated over time. Clinically, a pseudocyst may resolve on its own or develop complications such as infection, rupture, or hemorrhage. It’s not an abscess, which is an infected purulent collection, nor a phlegmon, which is a diffuse inflammatory mass without a discrete cavity, nor ascites, which is free fluid in the peritoneal cavity without a capsule.

Pancreatic pseudocysts are localized fluid collections that occur after pancreatitis. The defining feature is that they are surrounded by a fibrous or granulation tissue wall but lack an epithelial lining. This absence of an epithelial lining distinguishes a pseudocyst from a true cyst, which would have an epithelial lining. The fluid inside is typically rich in pancreatic enzymes and can result from leakage of pancreatic juice into the surrounding tissue, becoming encapsulated over time. Clinically, a pseudocyst may resolve on its own or develop complications such as infection, rupture, or hemorrhage. It’s not an abscess, which is an infected purulent collection, nor a phlegmon, which is a diffuse inflammatory mass without a discrete cavity, nor ascites, which is free fluid in the peritoneal cavity without a capsule.