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慢性复发性唇皲裂属于癌前病变,有文献报道其癌变率为6.2%。促成皲裂发生的因素.唇干燥,牙齿的慢性刺激,不利的气候条件,吸烟,有害习惯(舔、咬口唇),下唇过紧,糖尿病等。由于局部神经血管性营养障碍,皲裂难以愈合而易复发。癌变的原因.病程长,就诊晚,长期保守治疗,用腐蚀剂等。作者观察慢性唇皲裂57例,男38例,女19例,年龄12～81岁,下唇皲裂28例,上唇13例,上下唇16例。一处皲裂39例,2～4处18例。合并干燥型脱屑性唇炎18
Chronic recurrent lip chalks are precancerous lesions, the incidence of cancer reported in the literature was 6.2%. Factors contributing to the occurrence of chapped lips dry lips, chronic tooth irritation, unfavorable weather conditions, smoking, harmful habits (licking, biting lips), lower lip too tight, diabetes and so on. Due to local neurovascular dystrophy, chapped difficult to heal and easy to relapse. Causes of cancer. Long course of treatment, treatment late, long-term conservative treatment, with etchants. The authors observed in 57 cases of chronic lip chapped, 38 males and 19 females, aged 12 to 81 years old, lower lip chapped in 28 cases, 13 cases of upper lip, upper and lower lip in 16 cases. A rupture in 39 cases, 2 to 4 at 18 cases. Combined dry desquamate cheilitis 18