PMC4555908_01
(a) Nodular plaque over the left labia majora. (b) Post-treatment with CO2 laser-day 1. (c) Post-treatment - 2 months, healing with post-inflammatory hyperpigmentation
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F1
Examination revealed a firm, nontender, nodular plaque of 3.5 cm x 2.5 cm along with a few shiny papules along the right labia majora [Figure 1a].
(a) x10 view: Showing numerous horn cysts present throughout the dermis. (b) x40 view: Showing cyst walls lined by eosinophilic epidermal cells, containing keratin
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F2
Histopathology from the lesion showed numerous horn cysts present throughout the dermis surrounded by eosinophilic cells [Figure 2a]. Few of the cyst walls were lined by eosinophilic epidermal cells and contained keratin [Figure 2b]; thereby leading to a diagnosis of a less known adnexal tumor trichoadenoma.