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女性,29岁。因鼻塞10个月,双颈无痛性肿物3个月,1989年3月来我院诊治。检查:整个鼻咽腔及后鼻孔可见一圆形黑色肿物,凹凸不平。颈部可触及多个大小不等的淋巴结,颅神经未见异常。病理诊断为鼻咽部恶性黑色素瘤。CT扫描见整个鼻咽腔被肿物占据,向前侵犯后鼻孔,左侧咽旁及颈动脉鞘区为肿物占据。患者于1989年3月至7月在我科行直线加速器10MV的X线分段照射,采用耳前野、鼻前野、颈前后分割野及垂直侧野照射。每次4Gy,每周两次,鼻咽部
Female, 29 years old. Due to nasal congestion for 10 months, painless masses in both necks for 3 months, in March 1989 came to our hospital for treatment. Examination: A round black mass is seen throughout the nasopharyngeal cavity and the posterior nostril. Multiple lymph nodes of different sizes can be touched in the neck, and no abnormalities are found in the cranial nerves. The pathological diagnosis was nasopharyngeal malignant melanoma. On the CT scan, the entire nasopharyngeal cavity was occupied by a tumor, and the posterior nostril was invaded forward. The left parapharyngeal and carotid sheath area occupied the tumor. From March to July of 1989, the patient was subjected to X-ray segmental irradiation of the linear accelerator 10MV in our department. The ear front field, prenasal field, front and rear neck segmentation, and vertical side field irradiation were used. 4Gy each time, twice a week, nasopharyngeal