An adrenal teraoma is a very rare adrenal lesion. They account for around 0.7% of all primary adrenal tumors. As with teratomas in general, they are composed of mature tissues arising from more than one germinal layer.
They classically demonstrate a large fatty/lipomatous component as well as calcification/bone with the lesion. Typically present as large tumors (mean diamter around 9 cm according to one study 4). Cystic components may also be present.
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