ADRENAL MICROCYSTIC RETICULAR SCHWANNOMA – A CASE REPORT

Abstract Objective: Schwannomas are usually benign tumors, originating from the Schwann sheath of the peripheral or cranial nerves. Visceral schwannomas are rare, and less than 60 cases of adrenal schwannomas have been reported. Microcystic/reticular schwannoma is the rarest variant of schwannoma and only two cases have been reported in the adrenal gland. Here we describe a third case. Methods: Description of an adrenal microcystic/reticular adrenal schwannoma case with a comprehensive literature review. Results: The patient was a 69 year-old caucasian female with abdominal pain complains. An abdominal Computed Tomography (CT) scan revealed a solid, lobulated, 78 mm mass of the left adrenal gland. Two inconclusive adrenal biopsies were performed and then she was referred to our tertiary center for further evaluation. No clinical or laboratorial signs of endocrine dysfunction were identified. A Positron Emission Tomography with 2-deoxy-2-[fluorine-18]fluoro-D-glucose (18F-FDG PET) showed a single left adre...