1 MCQs in Radiology for NEET PG
A 45-year-old man with a history of severe acute pancreatitis 6 weeks ago presents with persistent epigastric pain radiating to the back and early satiety. Ultrasound of the abdomen shows a well-defined anechoic peripancreatic collection with a thin echogenic wall, marked as **A** in the diagram, displacing the stomach anteriorly. The collection measures 6 cm in maximum diameter. Fluid analysis via endoscopic ultrasound-guided fine needle aspiration reveals markedly elevated amylase (>3000 U/L) and low CEA. Which of the following best describes the pathophysiologic basis for the wall characteristics of the structure marked **A**?
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