melanocytoma

例句：

1. 1. The patient was diagnosed with a malignant melanoma.
   患者被诊断出患有恶性黑色素瘤。
2. 2.Melanoma is a type of skin cancer that can be treated with surgery and radiation.
   黑色素瘤是一种皮肤癌，可以通过手术和放疗进行治疗。
3. 3. Melanoma has a high mortality rate due to its aggressive nature.
   由于其侵袭性，黑色素瘤的死亡率很高。