Abstract

Malignant acrospiroma (MA)-is rather rare tumor with eccrine ductal and secretory differentiation, including clear cell component. This type of tumor appears more often in elderly people (average male patient age is 51 years, female patient-55 years). The tumor corresponds to solitary intradermal, exophytic or mixed type node 0.5-2cm or more in diameter, hemispheric, tight-elastic texture, on wide base, covered with unchanged skin, sometimes with ulcers. Small percent of cases have clear discharge from tumor. Considering the same architecture of malignant nodular hydradenoma and benign analogue, it is difficult to find the difference between them, although undisputed manifestation of malignance is vessel and perineural invasion, lymphogenic metastasis.