[Clinical and pathological characteristics of vocal fold leukoplakia and influential factors of recurrence and malignancy].

To investigate the clinical and pathological characteristics of vocal fold leukoplakia and influential factors of recurrence and malignancy. The study included 555 cases of vocal fold leukoplakia. All patients received surgical treatment. The relationship between the clinical and pathological features, and influential factors of recurrence and malignancy were analyzed. The pathological types included squamous epithelial simple hyperplasia in 58.0%, mild hyperplasia in 15.5%, moderate hyperplasia in 10.1%, severe hyperplasia and carcinoma in situ in 8.1%, infiltrative carcinoma in 8.3%. The different pathological types varied among different ages significantly(<0.01). The tobacco and alcohol abuse had no relationship with pathological types(>0.05). The more severe the pathology were, the more decreasing of the mucosal waves would be(<0.01). The pathologic severity had an apparent correlation with p53 positivity and the level of p53 and Ki67 positivity. The p53 positive proportion may increase with the increasing pathological severity(<0.01), so were the p53 and Ki67 positive levels(<0.01).Among 232 cases of postoperation follow-ups, 83 cases(35.8%) relapsed while 8 cases(3.4%) malignancy. Bilateral lesions had a higher rate of relapse and malignancy than unilateral lesions(95% 0.378 ［0.197-0.723］，<0.01). The relapse and malignancy had a relationship with the pathologic severity. The incidence of disease recurrence and malignancy were positively correlated with pathological severity(<0.05). p16 positive patients relapsed for more times(<0.01) and with an uprising tendency of relapse and malignancy（>0.05）. Pathological types of vocal fold leukoplakia are different. The older men, decreasing of mucosal wave of vocal folds and bilateral lesions were very important factors to predict disease severity. p53 and Ki67 positive rating and pathological severity were positively correlated. The bilateral lesions, pathological severity and p16 positivity had a tendency to increasing relapse and malignancy.