恶性肿瘤即癌症是当今世界上威胁人类生命的严重性疾病。癌症的早期信号很多,现将内脏恶性肿瘤在皮肤上的表现分述如下。皮肌炎:它是一种皮肤肌肉发生的弥慢性炎症性疾病,皮损部位多在皮肤暴露或四肢关节背面,其 Cancer, or cancer, is a serious disease that threatens human life in the world today. There are many early signs of cancer, and the performance of visceral malignant tumors on the skin is now described as follows. Dermatomyositis: It is a kind of chronic inflammatory disease of skin and musculature. The skin lesions are mostly on the back of skin or the joints of limbs.