Syringocystadenoma papilliferum: A case series and review of the literature in Indian context

Abstract

Syringocystadenoma papilliferum (SCAP) is a rare benign skin adnexal tumour commonly (50%) found in infants and children and less commonly (15–30 %) found at puberty and in adolescents. It usually presents as irregular papule or smooth hairless plaque on the scalp and forehead, however, nodular or verrucous transformation is reported at puberty. Microscopically it is characterized by ducts connecting to the surface, containing papillary processes and lined with two epithelial layers. Head and neck is the commonest (75%) and lower extremity is the rarest reported location. Here we report a case series of SCAP at five different locations throughout the body. The clinical and histological features and the differential diagnoses are also discussed.