Melanonichia (Melanonychia) is ’n swart of bruin pigmentasie van die normale spykerplaat, en kan teenwoordig wees as ’n normale bevinding by baie Afro‑Karibiese mense.
’n wye, diep gepigmenteerde band met onreëlmatige lyne en gepigmenteerde verlengings op die periunguale weefsel is ’n teken van melanoom.
Melanonychia is a black or brown pigmentation of the normal nail plate, 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.
Ongewone veelvuldige lyne word waargeneem. Melanonichia (Melanonychia) is meestal benigne, maar as daar baie onreëlmatige lyne op hierdie vlak is, kan 'n biopsie oorweeg word.
Baie pasiënte vind melanonië kommerwekkend, aangesien dit bruin‑swart verkleuring van die naelplaat veroorsaak. Dit is 'n algemene rede vir naelverkleuring, met oorsake wat wissel van goedaardig tot potensieel ernstig, soos melanome. Longitudinale bandagtige melanonië kan voortspruit uit verskeie plaaslike of sistemiese faktore. Melanonychia is a very worrisome entity for most patients. It is characterized by brownish black discoloration of nail plate and is a common cause of nail plate pigmentation. The aetiology of melanonychia ranges from more common benign causes to less common invasive and in situ melanomas. Melanonychia especially in a longitudinal band form can be due to both local and systemic causes.
Melanonychia represents a brown to black discoloration of the nail plate that may be induced by benign or malignant causes. Two main mechanisms are involved in the appearance of melanonychias, i.e., melanocytic activation and melanocytic hyperplasia.
Muehrcke's lines (Muehrcke se lyne)
’n wye, diep gepigmenteerde band met onreëlmatige lyne en gepigmenteerde verlengings op die periunguale weefsel is ’n teken van melanoom.