Hidradenoma Papilliferum

Abstract

A 45-year-old female patient presented with an asymptomatic
nodule of 6-months duration in the vulva. On examination,
a well-circumscribed nodule of size 1 cm was seen on inner aspect
of left labium majus (Figure 1). The nodule was firm and
non-tender. Dermoscopy showed pink and white structures with
curvilinear vessels (Figures 2 and 3). Differential diagnoses considered
were hidradenoma papilliferum or some other adnexal tumor,
pyogenic granuloma, and a remote possibility of donovaniosis or
amelanotic melanoma. The nodule was excised and sent for histopathological
examination, which showed a dermal tumor with
cells in papillary folds, tubules, and cystically dilated spaces. These
findings were those of hidradenoma papilliferum.