Acrospiroma is a rate benign tumor and a clinicopathologically distinctive neoplasm diffdrentiating toward the distal part of the eccrine sweat gland.
I experienced a case of dermal acrospiroma in a 59-year-old man who had a 7.0×6.5×5.3 cm sized, slowly growing, brown colored, smooth-surfaced mass on the right scrotum for 3 years. Histological examination revealed lobular structures composed
of
small fusiform cells and large eosinophilic polyhedral cells. Histochemically some of large polyhedral cells had PAS-positive, DPAS-negaticve glycogen and Alcian-positive mucin in cytoplasm. Immunohistochemical statinings fro vimentin, S-100, low
molecule keratin, and EMA were positive in the tumor cells.
During 6 months follow up period after excision, there was no recurrence. However, it is necessary to follow up for a long period because some acrospiroma may recur after a long silence period.
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