良性牙骨质母细胞瘤(benign cemento-blastoma)是一种发生于颌骨的少见疾患,位于上颌腭侧者更属罕见.现将我院所见一例报导如下:患者男,22岁,1978年6月12日入院.患者于半年前发现右上腭有一黄豆大小的肿块,伴右后牙龈部疼痛.后肿块逐渐增大,于5月8日在当地拔除8,以后腭部肿块生长较快而至我院就诊.局部检查:右上腭7腭侧见一明显隆起的肿块,约2×1.5厘米大小,质硬 Benign cemento-blastoma is a rare condition that occurs in the jawbone and is more common in the maxillary palatal.A case report of our hospital is as follows: Patient male, 22 years old, 1978 The patient was admitted to hospital on June 12. He was found with a soy-size mass in the upper right palate six months ago with pain in the right posterior gingival area, a gradual enlargement of the mass, and removal of the mass 8 on May 8, after which palatal masses grew faster But to our hospital. Local examination: the right palate 7 palatal see a clear bulge of the tumor, about 2 × 1.5 cm in size, hard