Middle ear adenoma

We report a case of middle ear adenoma, a rare epithelial tumour composed o f adenomatous and neuroendocrine cells. These tumours have been designated by many different names, leading to controversy regarding their histogenesi s and classification. The diagnosis was based on light microscopy and immun ohistochemistry. A positive immunoreaction was evidenced for antibodies to keratin and chromogranin. The tumour was removed surgically. No additional therapy is recommended in the literature.