A Radiographic study of Fibro-osseous lesions of the jaw bones / 대한구강악안면방사선학회지

The purpose of the study was to obtain information on the clinical and radiographic features of the fibro-osseous lesions in the jaws. For this study, the author examined and analysed the clinical records and radiographs of 71 cases of 68 patients in fibrous dysplasia diagnosed by clinical and radiographic or histopathological examinations. The obtained results were as followings : 1. Fibrous dysplasia occured most frequently in the 2nd decade(30.0%), ossifying fibroma in the 3rd-4th decades, periapical cemental dysplasia in the 4th decade, and all of three lesions showed slight predilection in females. In most cases, chief complaints were painless facial swelling in fibous dysplasia and ossifying fibroma, and periapical cemental dyplasia was found accidentally in radiographs. 2. Fibrous dysplasia was occured more frequently in maxilla, ossifying fibroma in mandible and both lesions in premolar-molar area. Periapical cemental dysplasia was larger than that of ossifyng fibroma, and the shape of ossifying fibroma was more round and elliptical than fibrous dysplasia whose was fusiform. 3. Fibrous dysplasia was shown homogeneous radiopaque shadow of 57.6% and ossifying fibtoma & periapical cemental dysplasia were shown mixed appearance of radiolucency and radiopacity shadows at 74.2%, 60.0%, respectively. 4. Fibrous dysplasia was entirely shown poorly defined at 87.7%, but ossifying fibroma & periapical cemental dysplasia were shown well outlined at 60.0%, 70.0%, repectively. 5. Cortical thinning and expasion were observed in fibrous dysplasia and ossifying fibroma, and severe in ossifying fibroma than fibrous dysplasia, and those signs were not seen in periapical cemental dysplasia. Loss of lamina dura was dominant in fibrous dysplasia and root resorption was dominant in ossifyingfibroma. Displacement of mandibular canal and the degree of the increase of vertical dimension were alike in both lesions. Displacement of maxillary sinus or nasal cavity, thinning & expansion of the maxiilary sinus were dominant in fibrous dysplasia. 6. Polyostotic fibrous dysplasia was occured at 5.9%, Multiple periapical cemental dysplasia at 43.7%. Occurrence rate in the edentulous area of fibrous dysplasia and ossifying fibroma were 7.0%, 8.6%, respectively.

Adenoid cystic carcinoma of the minor salivary glands / 대한구강악안면방사선학회지

Adenoid cystic carcinoma is a malignant salivary gland tumor with typical histologic patterns. The majority of the se tumors occurs in the minor salivary glands, especially mucosa of the hard palate. The authors experienced the patient s, who compained the tumor-like soft tissue masses on the palatal and mouth floor area. After careful analysis of clinic al, radiological and histopathological findings, we diagnosed them as adenoid cystic carcinomas in the minor salivary gl ands, obtainted results were as follows: 1. Main clinical symptoms were a slow growing soft tissue mass with normal intact mucosa on the palatal area, and soft tissue mass with mild pain on the mouth floor area. 2. In the radiographic examminations, soft tissue masses were observed with invasion to adjacent structures, and modera te defined, heterogeneous soft tissue mass with enhanced margin, respectively. 3. In the histopathologic examminations, dark-stained, small unifrom basaloid cells in the hyaline or fibrous stroma we re observed as solid and cribriform patterns, respectively.

Adenoid cystic carcinoma of the minor salivary glands / 대한구강악안면방사선학회지

Adenoid cystic carcinoma is a malignant salivary gland tumor with typical histologic patterns. The majority of the se tumors occurs in the minor salivary glands, especially mucosa of the hard palate. The authors experienced the patient s, who compained the tumor-like soft tissue masses on the palatal and mouth floor area. After careful analysis of clinic al, radiological and histopathological findings, we diagnosed them as adenoid cystic carcinomas in the minor salivary gl ands, obtainted results were as follows: 1. Main clinical symptoms were a slow growing soft tissue mass with normal intact mucosa on the palatal area, and soft tissue mass with mild pain on the mouth floor area. 2. In the radiographic examminations, soft tissue masses were observed with invasion to adjacent structures, and modera te defined, heterogeneous soft tissue mass with enhanced margin, respectively. 3. In the histopathologic examminations, dark-stained, small unifrom basaloid cells in the hyaline or fibrous stroma we re observed as solid and cribriform patterns, respectively.