髁状突良性肥大较为少见 ,病因尚不明确。笔者近遇 1例右侧髁状突良性肥大并伴有鸟嘴状畸形 ,现报道如下。患者男性 ,2 9岁 ,自感右侧面部不适 1月余 ,1999年 12月 2 1日来我院就诊。检查见两侧面部基本对称 ,右侧耳前区有轻度压痛 ,开口度 2 0ｃｍ。前牙开牙合 ,后牙咬合关系 Condyle benign hypertrophy is relatively rare, the cause is not clear. Nearly 1 case I encountered the right condylar benign hypertrophy and accompanied by beak-like deformity, are reported below. Male patients, 29 years old, self-feeling right facial discomfort more than 1 month, December 21, 1999 to our hospital. Check the basic symmetry on both sides of the face, right ear area mild tenderness, opening 20cm. Anterior occlusal occlusion, occlusal occlusion