Blue nevus - 青色母斑
＠母斑細胞が深く存在するため、青色に見えます。
References
Blue nevus は、メラノサイトの過剰な増殖によって引き起こされる一群の皮膚腫瘍を指し、頭、腕、または臀部に青から黒の隆起として現れます。通常は単一で後天性ですが、出生時から存在していたり、複数の部位に発生する場合もあります。これらの病変は、黒色腫のような濃い色素沈着の腫瘍と間違われることが多く、通常、頭皮、腕、腰、または臀部では青く見えます。
The term blue nevus describes a group of skin lesions characterized by dermal proliferation of melanocytes presenting as blue to black nodules on the head, extremities, or buttocks. In most cases, they are acquired and present as a solitary lesion but may also be congenital and appear at multiple sites. Blue nevi are melanotic dermal lesions that commonly presents as a blue nodule on the scalp, extremities, sacrococcygeal region, or buttocks. Its characteristic blue to black hue is frequently confused with other darker pigmented lesions, including malignant melanoma.
The term blue nevus describes a group of skin lesions characterized by dermal proliferation of melanocytes presenting as blue to black nodules on the head, extremities, or buttocks. In most cases, they are acquired and present as a solitary lesion but may also be congenital and appear at multiple sites. Blue nevi are melanotic dermal lesions that commonly presents as a blue nodule on the scalp, extremities, sacrococcygeal region, or buttocks. Its characteristic blue to black hue is frequently confused with other darker pigmented lesions, including malignant melanoma.
生検が行われることもあれば、病変全体が外科的に除去されることもあります。臨床転帰は一般に良好で、癌化する可能性はわずかです。鑑別診断には皮膚線維腫と黒色腫が含まれます。