title: False positive 18F-FDG PET scan in adrenal oncocytoma.
abstract: 18F-FDG whole-body positron emulsion tomography (18F-FDG PET) has become an established imaging modality for a variety of cancers. Today, 18F-FDG PET is utilized to differentiate benign from malignant non-functioning adrenal masses. In this report, a 25-year-old woman presented with a 2-month history of left flank pain. Abdominal CT revealed a left 6.5 x 4.5 cm adrenal mass with regular margins and focal calcification. To make a differential diagnosis, 18F-FDG PET was performed. Preoperative laboratory studies showed that the mass was non-functioning. A left adrenalectomy was performed through a left subcostal incision. The final pathologic evaluation revealed adrenal oncocytoma. We present the disassociation between preoperative 18F-FDG PET and pathologic findings of a benign adrenocortical oncocytoma.
authors.affiliation: Department of Urology, Gazi University School of Medicine, Ankara, Turkey. acarcenk@hotmail.com
authors.forename: C
authors.initials: C
authors.lastname: Acar
authors.forename: B E
authors.initials: BE
authors.lastname: Akkas
authors.forename: I
authors.initials: I
authors.lastname: Sen
authors.forename: S
authors.initials: S
authors.lastname: Sozen
authors.forename: M T
authors.initials: MT
authors.lastname: Kitapci
mesh_terms: D018249:Adenoma, Oxyphilic / Q000000981:diagnostic imaging* / Q000473:pathology* / Q000601:surgery; D000310:Adrenal Gland Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology* / Q000601:surgery; D000315:Adrenalectomy / Q000379:methods; D000328:Adult; D003937:Diagnosis, Differential; D005189:False Positive Reactions; D005260:Female; D019788:Fluorodeoxyglucose F18; D005500:Follow-Up Studies; D006801:Humans; D007150:Immunohistochemistry; D009367:Neoplasm Staging; D049268:Positron-Emission Tomography / Q000379:methods*; D011300:Preoperative Care / Q000379:methods; D016896:Treatment Outcome
chemical_list: D019788:Fluorodeoxyglucose F18