Peer Reviewed
Perspectives on dermoscopy

An irregularly pigmented lesion on the chest

Steven Kossard
Abstract
Lentiginous naevi in the elderly may have atypical dermoscopic features and may require biopsy to exclude transition to melanoma.
Key Points
    Case presentation

    Over a 12-month period, a 75-year-old man developed an irregular pigmented lesion, measuring 4 mm in diameter, on his anterior chest. Dermoscopy revealed an asymmetrical lesion with an irregular light brown to dark brown network and a black homogeneous area with dark globules. Excision biopsy showed an epidermis with a well formed pigmented rete ridge system containing increased melanocytes and isolated nests. The upper dermis showed focal lymphocytic inflammation and pigment deposits.

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