Three-dimensional radiographic characteristics of 22 Adenomatoid odontogenic tumors
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.Results Twenty-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％).Conclusion AOT 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.
NETL
NSTL
万方数据
