[Adenoid cystic sweat gland cancer]

Two primary adenoid cystic carcinomas of the eccrine sweat glands of the skin are presented. This tumor, first described in recent years, represents the rarest form of carcinoma of the eccrine sweat gland. The tumor demonstrates characteristic histological features and clinically often exhibits slow progression and absence of lymph-node metastases. The most important differential diagnosis to be excluded is metastasis of an adenocarcinoma of an internal organ.