Melanonychia - 黑甲病
觀察到不尋常的多行。 黑甲病 (Melanonychia) 大多是良性的，但如果這個級別有許多不規則的線條，則可以考慮進行活檢。
Muehrcke's lines(Muehrcke線條)
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，範圍從良性病變到可能的惡性疾病，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.
在甲基組織上可見一條寬而深的色素帶，呈不規則線條並向周圍延伸，這可能是黑色素瘤的警訊。