[The detection of basement membrane and dendritic cells in laryngeal carcinoma]

The state of basement membrane(BM) and dendritic cells(DC) were observed by immunohistochemical methods with the use of anti-laminin antibody, anti-type IV collagen antibody, anti-S-100 protein antibody in 68 cases of laryngeal carcinoma and 21 cases of non-cancer laryngeal tissues. The results showed that among 68 patients with laryngeal carcinoma 39 cases had discontinuous BM. A continuous, linear BM was found mostly in normal larynx, atypia hyperplasia and papilloma, only 3 cases had discontinuous BM. 43 positive DC were detected in 68 cases of laryngeal carcinoma. There were rarely positive DC in non-cancer laryngeal tissues. The poorer the differentiation of carcinoma, the more the discontinuous BM and the lesser the number of DC. The discontinuous BM and DC(-) were seen more in advanced stages of carcinoma. The five-year survival rate in patients with continuous BM was significantly higher than that in patients with discontinuous BM, the five-year survival rate in patients with DC positive was also higher than that in patients with DC negative; the survival rate was highest in patients with continuous BM and DC positive. Our results indicated that the detection of the state of BM and dendritic cells were of value to the prognostic analysis in patients with laryngeal carcinoma.