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
relevance score : -100.0%
Referencesメラノキアは爪甲が茶色がかった黒色に変色する状態であり、多くの患者がこの症状を心配します。これは爪の変色の一般的な原因で、原因は良性から黒色腫などの重篤なものまで多岐にわたります。縦方向の帯状メラノキアは、さまざまな局所的要因や全身的要因に起因することがあります。
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.
不規則な線や爪周囲組織へ色素が広がる、幅広く深い色素帯は、黒色腫の兆候です。