Melanonychia - 黒色爪
異常な複数の行が観察されます。 黒色爪 (Melanonychia) はほとんどが良性ですが、このレベルの不規則な線が多数ある場合は、生検が考慮されることがあります。
Muehrcke's lines
References
メラノキアは爪甲が茶色がかった黒色に変色するため、多くの患者がこの病気を心配しています。これは爪の変色のよくある原因であり、その原因は良性から黒色腫など重篤な可能性のあるものまで多岐にわたります。縦方向の帯状メラノキアは、さまざまな局所的または全身的要因に起因する可能性があります。
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.
不規則な線と爪周囲組織への色素沈着の広がりを伴う幅広で深く色素沈着した帯は、黒色腫の兆候です。