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Melanonychia is a black or brown pigmentation of a nail, and may be present as a normal finding on many digits in Afro-Caribbeans, as a result of trauma, systemic disease, or medications, or as a postinflammatory event from such localized events as lichen planus or fixed drug eruption.
A longitudinal melanonychia, for example, is a brown or black vertical nail streak that’s typically benign. “It’s more likely that you have the benign streak. It’s a lighter streak.
Mohs surgery is the gold standard method for obtaining complete margin control during removal of a skin cancer (complete circumferential peripheral and deep margin assessment - CCPDMA) using frozen section histology. [1] CCPDMA or Mohs surgery allows for the removal of a skin cancer with very narrow surgical margin and a high cure rate.
Mole removal surgeries are performed for various reasons. Atypical mole removal is performed when moles look dysplastic, as this is associated with an increased risk of melanoma; Cosmetic mole removal is performed when moles are non-cancerous, but are preferred to be eliminated due to aesthetic or practical considerations. [25]
Melanonychia (longitudinal streaking that darkens or does not grow out), especially on the thumb or big toe, may indicate subungual melanoma. White lines across the nail (leukonychia striata, or transverse leukonychia) may be Mees' lines or Muehrcke's lines. Small white patches are known as leukonychia punctata.
Acral lentiginous melanoma (ALM) is a type of skin cancer. [6] It typically begins as a uniform brownish mark before becoming darker and wider with a blurred, irregular border. ALM is most frequently seen on the foot of a person with darker skin but can also be found in non-sun exposed areas such as the palms , soles , and under finger and ...