Melanonychia - 黑甲病
觀察到不尋常的多條線。黑甲病 (Melanonychia) 大多為良性，但若此類型出現許多不規則的條紋，則可考慮進行活檢。
Muehrcke's lines(穆爾克線)
relevance score : -100.0%
References許多患者對黑甲症感到擔憂，因為它會使指甲板呈現棕黑色。黑甲症是指甲變色的常見原因，病因範圍廣泛，從良性狀況到潛在的嚴重疾病，如黑色素瘤。縱向帶狀黑甲症可能由各種局部或全身因素引起。
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 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.
甲床組織上出現寬而深的色素帶，呈不規則走向並伴有色素延伸，可能是黑色素瘤的徵象。