1病例介绍患者女,42岁。2012年5月入院,入院诊断为牙龈恶性黑色素瘤放射治疗(放疗)后复发伴多发性皮下转移、淋巴结转移、肺转移、肝转移。入院前18个月,患者首发下牙龈散在黑色点状色素沉着,于外院行局部色素斑块剔除术后随访。入院前9个月,外院诊断发现下牙龈及右颌肿大结节,经牙龈和右颈包块活体组织检查证实为恶性黑色 Case description Patient female, 42 years old. May 2012 admitted to hospital for diagnosis of gingival malignant melanoma recurrence after radiation therapy (radiotherapy) with multiple subcutaneous metastasis, lymph node metastasis, lung metastasis, liver metastases. 18 months before admission, the patient’s first gingival scattered in black spot-like pigmentation in the hospital line of local pigmented plaque removed after follow-up. Nine months prior to admission, the lower extremity was diagnosed with gingival and enlarged nodules in the right jaw by biopsy of the gums and right cervical mass and found to be malignant in black