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采用切开鼻咽部粘膜，钳取粘膜下深层组织做病理检查早期诊断粘膜下型鼻咽癌８０例。原发癌灶位于鼻咽部顶后壁及咽后壁者共２９例。纵行切开粘膜０．５～１．０ｃｍ长，用直头活检钳自切口处伸入钳取深层组织，１次活检确诊率为１００％，无并发症。原发癌灶位于鼻咽顶壁５１例，在间接鼻咽镜窥视下用扁桃体手术刀切开粘膜，用翘头式鼻咽活检钳取深层组织，一次活检确诊率８８．２％。有２例（３．９％）术后出血较多，用后鼻孔填塞法止血。
Nasopharyngeal mucosa was cut and 80 cases of submucosal nasopharyngeal carcinoma were diagnosed early by pathological examination. Primary tumor located in the nasopharynx and posterior wall of the posterior wall of 29 cases of pharyngeal wall. Longitudinal incision mucosa 0.5 ~ 1.0cm long, with straight biopsy forceps into the deep tissue from the incision, a biopsy confirmed rate of 100%, no complications. The primary foci were located on the top of the nasopharynx in 51 cases. The mucosa was excised with a tonsil scalpel under indirect nasopharyngoscopy. 88.2% of the patients were diagnosed by biopsy with the Alice head nasal biopsy forceps. There are 2 cases (3.9%) bleeding after surgery, nasal packing method to stop bleeding.