ObjectiveTo identify the right and left difference of the facial soft tissue landmarks three-dimensionally from the subjects of normal occlusion individuals.Materials and MethodsCone-beam computed tomography (CT) scans were obtained in 48 normal occlusion adults (24 men, 24 women), and reconstructed into 3-dimensional (3D) models by using a 3D image soft ware. 3D position of 27 soft tissue landmarks, 9 midline and 9 pairs of bilateral landmarks, were identified in 3D coordination system, and their right and left differences were calculated and analyzed.ResultsThe right and left difference values derived from the study ranged from 0.6 to 4.6 mm indicating a high variability according to the landmarks. In general, the values showed a tendency to increase according to the lower and lateral positioning of the landmarks in the face. Overall differences were determined not only by transverse differences but also by sagittal and vertical differences, indicating that 3D evaluation would be essential in the facial soft tissue analysis.ConclusionsMeans and standard deviations of the right and left difference of facial soft tissue landmarks derived from this study can be used as the diagnostic standard values for the evaluation of facial asymmetry.

(Figs. 2, 3) , 종괴가 4예 (33 % ) (Fig. 4) , 기강 (67 % ) (Fig. 1, Fig. 4 Purpose: To evaluate the CT findings of bronchial anthracofibrosis. Materials and Methods: Fourteen patients with bronchoscopically confirmed anthracofibrosis were involved in this study. CT findings (n=12) were retrospectively analysed;the pattern, distribution and extent of bronchial and parenchymal abnormalities and additional findings such as mediastinal lymphadenopathy and pleural effusion were assessed. Age, sex, and oècupational and disease history were also reviewed.Results: Patients were aged between 63 and 95 (mean, 7 1.3)years, and ten were female . Only one patient had an occupational history, but four had a history of pulmonary tuberculosis. Frequent radiologic findings were bronchial wall thickening(n=6), atelectasis(n=8), mediastinal lymphadenopathy(n=7) and mass(n=4). Other accompanying findings were bronchial wall calcification(n=3), consolidation(n=2) and pleural effusion(n=2). Right upper (n=7) and right middle lobe(n=7) were the most commonly involved sites, and multifocal involvement(n=7) was frequent.Conclusion: Bronchial wall thickening, atelectasis and mediastinal lymphadenopathy were characteristic CT findings of anthracofibrosis. When such findings are noted in older or aged female patients, anthracofibrosis should be included in the differential diagnosis.

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