[Tubulo-papillary apocrine adenoma in association with syringocystadenoma papilliferum].

Tubulo-papillary apocrine adenoma (TAA) is a very rare sweat gland tumor. TAA in association with syringocystadenoma papilliferum (SCP) is exceptional. A 2-year-old Tunisian child developed a mixed tumor on the scalp: TAA in association with SCP. Histologically, the tumor consisted of dilated duct-like areas with some apocrine gland-like areas. The superficial part of the tumor was connected to the epidermis and showed the characteristics of SCP. The characteristics and differences in histopathologic and immunohistochemical findings in this mixed tumor are described.