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对 ２５ 例下咽癌的手术切除标本连续切片进行组织病理学研究，以探讨保留喉功能下咽癌手术的可行性。发现 Ｔ１ 、 Ｔ２ 病变很少累及喉结构，随 Ｔ 分级的升高，下咽癌侵犯喉结构的频度增加。下咽癌多累及部分喉组织，病变对侧的喉组织则常是正常的。因此，对于 Ｔ１、 Ｔ２ 病变及某些细心选择的 Ｔ３、 Ｔ４ 下咽癌，行保留喉功能手术不会影响下咽癌切除的彻底性，并能提高患者的生存质量。
Twenty five cases of hypopharyngeal carcinoma were examined by histopathology on serial sections of the resected specimens to explore the feasibility of preserving laryngeal function under pharyngeal cancer. It was found that T1 and T2 lesions rarely involve the laryngeal structure. With the increase of T grade, the frequency of hypopharyngeal carcinoma invading the laryngeal structure increases. Hypopharyngeal cancer involving more than part of the laryngeal tissue, lesions on the contralateral laryngeal tissue is often normal. Therefore, T1 and T2 lesions and some careful selection of T3, T4 hypopharyngeal carcinoma, line preserving laryngeal surgery does not affect the thoroughness of hypopharyngeal resection, and can improve the quality of life of patients.