Zosteriform lymphangioma circumscriptum.

Lymphangioma circumscriptum (LC) is a form of lymphangioma involving skin and subcutaneous tissue. It is evident as translucent vesicles of varying size, though commonly 2 to 4 mm, and of a pink, red, or black hue. It is localized to the dermis, frequently extending deeply and laterally.

Subungual melanoma: a deceptive disorder.

Subungual melanoma is an uncommon form of acral melanoma that arises within the nail bed. The incidence for acral melanomas is similar worldwide, but the proportion is higher in dark-skinned individuals. The subungual form represents about 2% of cutaneous non-sun induced melanomas in the western world, and up to 75% in Africans, 10% in Japanese, and 25% in the Chinese of Hong Kong.