Cystic insulinoma.
D007516:Adenoma, Islet Cell / Q000000981:diagnostic imaging*; D000792:Angiography; D001707:Biopsy, Needle; D006801:Humans; D007340:Insulinoma / Q000000981:diagnostic imaging*; D008297:Male; D008875:Middle Aged; D010181:Pancreatic Cyst / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed