title: Sonography of islet cell tumor of the pancreas: report of two cases.
mesh_terms: D007516:Adenoma, Islet Cell / Q000175:diagnosis*; D000328:Adult; D000368:Aged; D003937:Diagnosis, Differential; D006801:Humans; D008297:Male; D010190:Pancreatic Neoplasms / Q000175:diagnosis*; D014463:Ultrasonography