Abstract
We report a case of a 41-year-old woman who was diagnosed as having the syndrome of inappropriate secretion of ADH (SIADH). There was no evidence of any disorders of the central nervous system, lung diseases, or drugs causing SIADH. Positron emission tomography (PET) using 18F-fluorodeoxyglucose (FDG) was performed and indicated a tumor of the uterine cervix. After resection of the tumor, both serum sodium level and serum osmolarity were normalized concomitantly with a decrease in serum ADH level. This is the first case report suggesting the usefulness of a FDG-PET scan to detect an occult cancer responsible for SIADH. It seems plausible that FDG-PET may be helpful in the diagnosis of other ectopic hormone-producing tumors such as ectopic ACTH-producing tumors that cause Cushing's syndrome.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
