【摘要】 目的 利用螺旋CT和锥形束CT分析22例牙源性腺样瘤（adenomatoid odontogenic tumor, AOT）的影像学特点，以期为临床诊断和鉴别诊断提供参考。方法 回顾性收集2010年1月～2022年10月于北京大学口腔医院就诊的有完整临床资料、病理诊断及螺旋CT或锥形束CT影像的AOT患者22例，结合临床与病理表现，分析其影像学特点，包括位置、大小、膨隆情况及钙化情况等。根据病变内钙化特点，将病变分为：无钙化型（无明显钙化）、偏侧型（钙化位于病变一侧的边缘）、星环型（钙化环绕病变中心呈圆形或环形）；散发型（钙化在病变内零星分布）。结果 共纳入22例患者，男性9例，女性13例，年龄10～34岁。22例AOT均为骨内型单房病变，其中21例（95.5%）为类圆形，11例（50.0%）位于下颌骨前部。19例（86.4%）病变内可见形态及数目不等的钙化物，包括偏侧型3例，星环型12及散发型4例；余3例（13.6%）无钙化。另外，18例（81.8%）病变唇/颊侧骨皮质膨隆，12例（54.5%）舌/腭侧膨隆；6例（27.3%）存在骨皮质不连续；12例（54.5%）含阻生牙，其中8例（66.7%,8/12）阻生牙为尖牙；仅4例（18.2%）有牙根吸收。结论 本组病例中AOT以年轻女性多见，好发于颌骨前部，病变膨隆明显，近90%的病变内可见钙化物。根据瘤内钙化特点可分为无钙化型、偏侧型、星环型及散发型。更多还原

【Abstract】 Objective To analyze the there-dimensional radiographic characteristics of adenomatoid odontogenic tumors(AOT) using spiral computed tomography(SCT) and cone-beam CT(CBCT).Methods Clinical records, histopathological reports, and SCT or CBCT images of 22 patients were retrospectively acquired, and radiographic features, including site, shape, size, expansion, intralesional calcification, and relationship with surrounding tissues, were analyzed.Radiographically, the lesions were divided into four types: I(non-calcification type): absence of calcification; Ⅱ(partial-circumferential type): multiple calcifications at one side of the tumor;Ⅲ(circumferential type): multiple calcifications around the center of the tumor; Ⅳ(sporadic type): sporadic calcifications in the tumor.ResultsTwenty-two patients involved 9 males and 13 females(age: 10～34 years).Among them, 21 lesions(95.5%) were round-like in shape, and 11(50%) were located in the anterior mandible.According to the calcification map, they included 3 type Ⅰ, 4 type Ⅱ, 12 type Ⅲ and 3 type Ⅳ lesions. Labial/buccal cortex expansion occurred in 18 cases(81.8%), and palatal cortex expansion was seen in 12 cases(54.5%). Moreover, cortex discontinuity occurred in 6 lesions(27.3%). Impacted tooth was found in 12 lesions(54.5%), including canines in 8 cases(66.7%, 8/12).Besides, root resorption was present in 4 lesions(18.2%).ConclusionAOT tended to occur in young females and had a predilection for the anterior jaw bone. Most lesions were round in shape. Calcifications were present in approximately 90% of the cases. According to the calcification map, they can be divided into non-calcification type, semi-circumferential type, circumferential type,and sporadic type.更多还原