患者,女,2 5岁,以右下颌牙床肿块3个月来诊。检查见:面部两侧不对称,右颌面部肿胀,口内6 1|处可见唇颊侧、舌侧明显膨隆,表面光滑、质硬,牙齿无明显松动,颌下未触及肿大淋巴结。下颌骨侧位片见6 2 |区域有5cm×3 .5cm低密度影,边界清楚,5 -2 |牙根位于其内,5 |根尖吸收。诊断: Patients, female, 25 years old, to the right lower jaw gum mass 3 months to visit. Check see: facial asymmetry on both sides of the face, right maxillofacial swelling, mouth 6 1 | Department can see lip buccal, bulging bulging tongue, smooth surface, hard, no obvious loosening of the teeth, submandibular lymph nodes did not touch the swollen. The mandibular lateral radiographs are seen in the 6 2 | region with a 5 cm × 3.5 cm low-density shadow with a clear boundary and a 5 -2 root in the root and a 5 cm apical absorption. diagnosis: