黑痣不是肿瘤。多数黑痣位于真皮内,叫做“皮内痣”,是永久良性的。黑痣如位于表皮和真皮交界外,叫做“交界痣”,此种黑痣可恶变,但罕见;近年我院遇到二例,现报道于下: 例一:杨××、男、48岁,住院号3886。1980年1月11日就诊。自诉6个月前,右内踝及右脚跟分别长一绿豆大和蚕豆大黑痣,近一月来黑痣迅速增大,伴有疼痛,影响走路。门诊诊断黑色素瘤收住院。检见右内踝 Black mole is not a tumor. Most black cockroaches are located in the dermis, called “intradermal fistulas,” and are permanently benign. Black lice are located at the junction of the epidermis and the dermis. They are called “junction junctures.” Such black lice can be malignant but rare; in recent years, our hospital has encountered two cases, which are reported below: Example 1: Yang X, male, 48 years old , Hospital number 3886. Visited on January 11, 1980. Six months before the private prosecution, the right internal malleolus and the right heel were respectively one mung bean and one broad bean. In the past month, the black mole rapidly increased, accompanied by pain and affected walking. The outpatient diagnosis of melanoma was admitted to hospital. Check right inside