[Primary adrenal schwannoma]

We report a rare case of retroperitoneal schwannoma arising from left adrenal gland. A 45-year-old man with upper abdominal discomfort was found to have a tumor in the left adrenal gland by abdominal ultrasonographic scan. The laboratory findings were all normal but angiogram indicated slightly hypervascular adrenal tumor. Eventually, he was underwent left adrenalectomy. The removed mass was measured 6.5 x 5.7 x 5.0 cm and weighed 75.5 g. Pathological study revealed benign schwannoma arising from the adrenal gland, consisting mainly of the Antoni A type. A review of the literature on adrenal schwannoma is included.