Abstract
The fine needle aspiration (FNA) cytologic evaluations of most adrenal lesions are straightforward. However, there are diagnostic pitfalls to be avoided.A 34-year-old, pregnant woman was discovered to have an asymptomatic, right upper abdominal mass on ultrasound examination. After delivery, computed tomography-guided FNA showed bland epithelial cells, and a diagnosis of adrenal cortical adenoma was made. However, subsequent resection showed a myelolipoma of the adrenal gland.This case illustrated 2 cytodiagnostic pitfalls in adrenal fine needle aspirates. First, the myeloid cells characteristic of a myelolipoma were not present in the FNA smears because a large portion of the lesion was composed of fibroadipose tissue. Second, extraneous, benign cells of hepatic origin were misinterpreted as adrenal cortical adenoma cells.
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