[Exulcerating cystadenolymphoma of the parotid gland. A case report]

A recurrent adenolymphoma of the left parotid gland occurring in a 79-year-old woman is reported having caused an extensive ulceration of the epidermis, clinically suggestive of a malignant tumour. The ulcerative tumour process cannot be explained by a particular pattern of growth or a malignant transformation of the adenolymphoma. It is assumed that residual tumour cells of the initially incompletely removed adenolymphoma spread via a long-standing postoperative fistula to the epidermis leading to the uncommon ulceration.