Introduction
Microcystic adnexal carcinoma (MAC), firstly described by Goldstein in 1982 (1), is a rare kind of cutaneous neoplasm with a very aggressive local infiltration that destructs the affected tissues (2). MAC recurs frequently and the ratio of male and female patients affected by, is almost equal. Head and neck are the most involved regions.
Its age range is 11 to 83 years (mostly appears in the 40 to 50) and is described as a firm, colored lesion (papule, nodule, or plaque) which grows slowly (2-6).
Pain, ignition, and decreased sensation or paresthesia (which is a sign of perineural invasion) are considered as the most common symptoms of MAC (2,7-10).
Although MAC is not a metastatic tumor (5); it infiltrates, shelvs, or skates among the facial tissues (including muscle, perichondrium, periosteum, and galea) and aggressively invades the affected region (8) and spreads far beyond the visible margins (11).
According to its clinical and histological features, it can easily be misdiagnosed or confused with other cutaneous neoplasms like basal cell carcinoma, squamous cell carcinoma, desmoplastic trichoepithelioma, syringoma, and trichoadenoma (12).
The correct diagnosis of MAC is very vital because of its aggressive behaviour and high recurrence rate. Here in, we report a case of recurrent MAC and discuss about possible treatments.