作者报告一例右下颌支牙源性角化囊肿。患者50岁,男性,主诉开口障碍,既往患先天性耳聋、喘息。家族中无特殊记载。约二年五个月前,从右颊到下颌角无痛性肿胀,开口障碍,曾诊断为“耳下腺炎”。口内切开,化疗后症状减轻。因相当8(?)部位齿龈持续流脓, The authors report a case of right-sided mandibular odontogenic keratocysts. 50-year-old male, complaining of open mouth disorders, previous congenital deafness, wheezing. No special records in the family. About two years and five months ago, from the right cheek to the mandibular angle painless swelling, opening disorders, had been diagnosed as “ear gland inflammation.” Mouth incision, relieve symptoms after chemotherapy. Due to the considerable 8 (?) Parts of the gum continued pus,