Malignant islet cell tumor of the pancreas with multiple hormone production and expression of CEA and CA19-9. Report of an autopsy case.
An autopsy case of malignant islet cell tumor of the pancreas is presented. The patient, a 64-year-old woman showed severe hypoglycemia as the initial symptom, and hyperinsulinemia was demonstrated by laboratory examinations. Metastatic tumors in the liver were found by abdominal computed tomography. Autopsy revealed a tumor measuring 6.5 x 3 x 2 cm occupying the pancreas from the body to the tail. From the results of histological and immunohistochemical studies, this was diagnosed as a malignant islet cell tumor producing multiple hormones such as insulin, glucagon, somatostatin and pancreatic polypeptide, as well as expressing the tumor-related antigens CEA and CA19-9. These findings suggested that the tumor cells showed differentiation to both endocrine cells and pancreatic duct cells.
Arihiro
K
K
Second Department of Pathology, Hiroshima University School of Medicine, Japan.
Inai
K
K
D007516:Adenoma, Islet Cell / Q000378:metabolism* / Q000473:pathology; D015295:Antigens, Tumor-Associated, Carbohydrate / Q000378:metabolism*; D001344:Autopsy; D002272:Carcinoembryonic Antigen / Q000378:metabolism*; D005260:Female; D005934:Glucagon / Q000378:metabolism; D006801:Humans; D007150:Immunohistochemistry; D007328:Insulin / Q000378:metabolism*; D008875:Middle Aged; D010190:Pancreatic Neoplasms / Q000378:metabolism* / Q000473:pathology; D010191:Pancreatic Polypeptide / Q000378:metabolism; D013004:Somatostatin / Q000378:metabolism
D015295:Antigens, Tumor-Associated, Carbohydrate; D002272:Carcinoembryonic Antigen; D007328:Insulin; D013004:Somatostatin; D010191:Pancreatic Polypeptide; D005934:Glucagon