melanocytoma of optic nerve

例句：

1. 1. The patient's melanotic tumor was removed successfully.
   患者的黑色素瘤成功切除。
2. 2.Melanoma is a rare but deadly form of skin cancer.
   黑色素瘤是一种罕见的但致命的皮肤癌。
3. 3. The melanotic tumor has been causing concern for the patient.
   这个黑色素瘤一直让病人感到担忧。