恶性黑色瘤是一种较少见的高恶性肿瘤，以下肢及头颈部多见。由于其对放射线抗拒，一般传统以手术治疗为主．虽然放射治疗对其有效，但大多用于术后残余病灶及复发转移患者的姑息治疗。本文报道2例鼻咽部及阴部恶性黑色素周用‘’co照射后而获得控制者。例1男，67岁，因鼻塞， Malignant melanoma is a rare, high-grade malignancy with more common limbs and head and neck. Because of its resistance to radiation, the general tradition of surgical treatment. Although radiotherapy is effective, it is mostly used for the palliative treatment of postoperative residual lesions and recurrence and metastasis. This article reports 2 cases of nasopharyngeal and pudendal malignant melanin weeks irradiated with ‘’co to obtain control. Example 1 Male, 67 years old, due to nasal congestion,