Pigmented Bowen’s disease over photo protected site in an Indian male: a rare case report

Abstract

Bowen’s disease is a relatively common, yet under-recognized form of squamous cell carcinoma in situ. Pigmented BD (Pigmented BD) is a rare subtype of BD characterized by a hyperpigmented appearance, accounting for only 2% of all reported cases of BD. A 56 year old male presented with a scaly violaceous plaque over the scrotal skin with a dermoscopic picture of structure-less areas and bluish-brown dots, black globules with diffuse light violaceous pigmentation. Biopsy showed full thickness keratinocyte atypia with mitosis at all levels and pigment incontinence. We report this case because of the atypical presentation of BD, supported by dermoscopy and histopathology findings. The rarity of such a clinical presentation signifies the need of a high index of clinical suspicion in such cases.

Keywords

• dermoscopy of skin malignancy
• histopathology
• immunohistochemistry
• pigmented bd
• squamous cell carcinoma