Acute promyelocytic leukemia associated with insulinoma: a case report.

We report a case of acute promyelocytic leukemia (APL) coexisting with insulinoma in a 61-year-old female. Two years before the onset of APL, she was diagnosed as having insulinoma and underwent resection of the body and tail of the pancreas, but no insulinoma was found in the resected pancreas. The clinical symptoms of hyperinsulinism, however, continued after the operation and were treated with diazoxide (100 mg daily, 37 g in total) for about two years until the onset of APL. During the induction therapy for APL, she died of hemorrhage and infection; autopsy revealed the presence of insulinoma (13 X 9 mm in size) in the residual pancreas head. This is the first case report of coexistence of APL and insulinoma.