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１２５例鼻咽癌放疗后出现体表肿块者，行肿块切除后病理检查发现：颌下区肿块以慢性淋巴结炎为多见，占６９．２％，其他区域肿块以转移癌为多见。肿块最长径＞２ｃｍ较≤２ｃｍ者转移癌阳性率差异有高度显著性（Ｐ＜０．０１）。放疗后１年内出现的肿块以转移癌为多见，较１年后出现者阳性率高，两者差异有显著性（Ｐ＜０．０５）。２年～４年间出现者转移癌检出率与非癌结节检出率差异无显著性（Ｐ＞０．０５）。５年后出现的肿块以慢性炎症多见。肿块的质地和活动度因受放疗晚期反应影响，判断其性质需慎重。
125 cases of nasopharyngeal carcinoma body surface mass after radiotherapy, line resection after the pathological examination found: submandibular mass with chronic lymphadenitis is more common, accounting for 69.2%, other areas with metastatic tumor is more common. There was a significant difference in the positive rate of metastatic carcinoma between longest diameter> 2cm and ≤2cm (P <0.01). Metastasis was common in metastases within 1 year after radiotherapy, with a high positive rate after 1 year (P <0.05). There was no significant difference in the detection rates of metastatic cancer and non-cancerous nodules between 2 years and 4 years (P> 0.05). 5 years after the lumps appear more common chronic inflammation. The texture and activity of the lump due to the late response to radiotherapy to judge its nature to be cautious.