She immediately told her customer that the dark line was likely a symptom of melanoma. Subungual melanoma (aka nail melanoma) ...

In about two-thirds of people with nail melanoma, the main symptom is longitudinal melanonychia, a dark vertical streak or line under the nail plate. It may be thin or thick, and light brown to black.

Foot melanoma is a type of cancer that starts in the feet. It can appear anywhere on the foot, including on the sole or under a nail. Foot melanoma is a type of acral melanoma. It starts in a type ...

A dark spot under his toenail that Marley believed to be the result of a soccer injury was eventually diagnosed as acral lentiginous melanoma (ALM). ALM is an aggressive cancer that usually ...