A case of zonal syringocystadenoma papilliferum of the axilla mimicking verruca vulgaris.

Syringocystadenoma papilliferum (SCAP) most frequently arises from an organoid nevus on the head and neck. Zonal or segmental lesions occurring in other locations are rare. Here, we report a case of a 39-year-old woman with an SCAP clinically mimicking verruca vulgaris in a zonal distribution on her right axilla after her birth. Histopathologic examination showed it to be a typical SCAP. Furthermore, the tumor had a warty surface, which histologically revealed some signs of viral infection. Although polymerase chain reactions for low- and high-risk human papilloma virus types were negative, the relationship of SCAP with viral infection needs further investigation.