Abstract
A 34-year-old male was found to have a tumor in the posterior auricular region. Malignancy was strongly suggested by a preoperative fine needle aspiration biopsy and CT scan. Complete enbloc resection of the tumor was carried out.Histopathological diagnosis revealed hyaline-vascular type of Castleman's lymphoma.Until now 74 cases of Castleman's lymphoma in the head and neck region have been reported in Japan, but none in posterior auricular region.The pathogenesis and differential diagnosis are discussed, and the literature is reviewed.
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