title: Pituitary oncocytoma presenting as Cushing's disease.
abstract: A 19-year-old girl presented with classical features of Cushing's syndrome. Endocrinal evaluation was consistent with pituitary source of ACTH; but imaging showed normal pituitary. Bilateral inferior petrosal sinus sampling confirmed the diagnosis. A successful remission was achieved after adenomectomy by transphenoidal route. Histopathological examination was consistent with pituitary oncocytoma and immunohistochemistry was positive for synaptophysin, chromogranin, neuron specific enolase, S-100, ACTH, prolactin, and GH.
authors: Department of Endocrinology, Army Hospital (Research & Referral), Delhi Cantt-10, India.
authors: M K
authors: MK
authors: Garg
authors: Reena
authors: R
authors: Bharwaj
authors: H C
authors: HC
authors: Pathak
authors: Sandeep
authors: S
authors: Kharb
authors: Abhay
authors: A
authors: Gundgurthi
authors: Aditi
authors: A
authors: Pandit
authors: K S
authors: KS
authors: Brar
keywords: Cushing's syndrome; pituitary oncocytoma
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