Endocrine Abstracts

Oncocytic adrenocortical neoplasm (OAN) represents a rare variant of adrenocortical carcinoma (ACC) with less than 150 cases reported in the literature. OANs account for 1.8% of adrenal masses, predominantly in adults and usually presenting as large tumors featuring hormonal secretion in 20% of cases. Accurate histological characterization of OANs is crucial as this subtype is believed to be more indolent in clinical behavior. There are 3 categories of OANs: pure oncocytic, mi...

Oncocytic adrenocortical neoplasms (OAN) were first described by Kakimoto et al. in 1986. Since then, only 160 cases have been reported in the literature. There are 3 categories of OANs: pure oncocytic, mixed oncocytic and ordinary adrenocortical with focal oncocytic changes. Although the majority of OANs are considered benign tumors, certain OANs may present similar characteristics to adrenocortical carcinoma, correct histological caractherisation is therefore crucia...