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[en] The formation of a pretibial ganglion cyst after the reconstruction of an anterior cruciate ligament is an uncommon complication which may be a result of the degradation of the biodegradable screw or a variety of other reasons. The authors report a case of a significantly large pretibial cyst, which probably occurred as a result of no treatment over a long period, along with a description of the clinical manifestations and radiologic findings
[en] The purpose of this study was to investigate the changes of the shape of the panoramic innominate line and also to examine the relation of the panoramic innominate line to maxillary posterior wall according to positional changes in panoramic radiographs of the patients who had no pathoses in the maxillary sinus and adjacent bony structures. Thus these panoramic radiographs were obtained and evaluated in standard, forward 10 mm, backward 10 mm, chin down 10o, and chin up 10'o positions. The following results were obtained; 1. Panoramic innominate lines were not changed in shape according to various positional changes in panoramic radiography. 2. The panoramic innominate line was observed to be more clear images and decreased distance to the posterior wall of maxillary sinus at forward 10 mm and chin down 100 positions. And the panoramic innominate line was observed more blurred images and increased distance to the posterior wall of maxillary sinus at backward 10 mm and chin up 100 positions.
[en] To evaluate the difference of the movement of the mandibular condyles between transcranial and panoramic TMJ radiographs to view the movement of the mandibular condyles. Thirty-four paired transcranial and panoramic TMJ radiographs of patients were used to evaluate the movement of the mandibular condyle. The distances, from the most superior point of the mandibular condyle to the most inferior point of the articular eminence on both radiographs, were measured. The measurements were taken at closed state and maximum opening state of each radiograph on both side. Differences between matched pairs were analysed by paired t-test, with significance established at P<0.05. The mean distance, from the most superior point of the mandibular condyle to the most inferior point of the articular eminence on both radiographs, was statistically different at each side (P<0.05). At closing state, the mean distance measured on panoramic TMJ radiographs was longer than on transcranial radiographs (0.85 mm at right side, 1.20 mm at left side). But at maximum opening state, the mean distance on transcranial radiographs was longer (1.00 mm at right side, 0.62 mm at left side) than panoramic TMJ radiographs.
[en] To evaluate the usefulness of ultrasonographic findings of the common extensor and flexor tendon in evaluation of patients with lateral and medial epicondylitis. Thirty eight elbows from twenty four patients (mean age=45.2 years) were included. Ultrasonographic examination was performed to evaluate lateral or medial epicondylitis. Epicondylitis was divided into five groups according to the severity of disease: 1) normal, 2) tendinopathy, 3) tendinopathy with a partial tear, partial tear and 4) complete tear. Change in the size of a tendon, bony change of the epicondylitis, presence or absence of calcification or echogenic foci in the common tendon and hypervascularity for each categories were also assessed. In addition, these lesions were divided into the superficial and deep according to the location of lesions. According to the severity, there were 15 cases of normal, 13 tendinopathies, 8 tendinopathies with a partial tear, 2 partial tears and 0 complete tear. Bony change was seen only in tendinopathy, tendinopathy with partial tear and partial tear. Calcification or echogenic foci were only observed in cases with tendinopathy and tendinopathy with partial tear. Hypervascularity was only seen in one case of tendinopathy. With thorough understanding of ultrasonographic findings of epicondylitis, ultrasonographic examination can be especially useful and effective in evaluating the severity and location of lesions.
[en] Non-Hodgkins lymphoma seldom, if ever, involves the tracheobronchial tree, and it manifests as a diffuse infiltrating pattern with clinically apparent systemic lymphoma. Endobronchial involvement presenting as an endobronchial polypoid mass is far rarer. We report here on a case of diffuse large B-cell non-Hodgkin lymphoma that presented as an endobronchial polypopid mass obstructing the central bronchi and this led to lobar atelectasis
[en] Glioblastoma multiforme (GBM) within the lateral ventricle is relatively rare and it is predominantly found in the frontal horn or body of the ventricle. It is highly unusual to find a GBM in the trigone of the lateral ventricle. We present here a very rare location of a GBM (the trigone of the lateral ventricle)
[en] The author has evaluated the panoramic image of the mandibular condyle according to its horizontal condylar angle (0 degree, 10 degree, 20 degree, 30 degree, 40 degree) and mandibular position (standard, 25 mm forward and reverse position). The results were as follows: 1. The larger the horizontal condylar angle was, the larger the horizontal magnification was in all positions. 2. In case of small horizontal condylar angle, profile view could be obtained in 25 mm forward and reverse position. 3. In case of large horizontal condylar angle, profile view could not be obtained in any positions.
[en] To estimate the visual lossless threshold of Joint Photographic Experts Group (JPEG) 2000 compression digital chest radiograph images. Fifty (n=50) selected chest radiograph images were compressed to 5 different levels: reversible (as negative control) and irreversible 5:1, 10:1, 15:1, and 20:1. By alternately displaying the original image and its paired compressed image on the same monitor, five radiologists independently determined if the image pairs had detectable differences. For each reader, we compared the proportion of the image pairs (the compressed image and the original image) rated to have detectable differences between reversible compression and each of the four irreversible compressions using the exact test for paired proportions. For each reader, the proportion of the image pairs rated to have detectable difference was not significantly different between the reversible and irreversible 5:1 and 10:1 compressions. However, the proportion significantly increased with 15:1 and 20:1 irreversible compressions, versus reversible compression in all readers (p=7.4 x 10-22 -0.027). 10:1 compressed chest radiograph images can be considered visually lossless and are therefore potentially acceptable for primary interpretation
[en] The purpose of this study was to evaluate the prevalence, the distribution, and the relation with adjacent roots of idiopathic osteosclerosis in the jaws by means of 7,837 person's panoramic radiographs. The following results were obtained; 1. The prevalence of idiopathic osteosclerosis in the jaws in panoramic radiographs was revealed to be 9.76% in total examined persons. There was a higher prevalence in males (10.10%) than in females (9.76%). 2. There was also a higher prevalence in the mandible (97.92%) than in the maxilla (2.08%). The most frequently involved area was the mandibular molar area (34.72%), followed by mandibular premolar area (33.37%). 3. According to the types of idiopathic osteosclerosis with relation to adjacent root, separated type (51.59%) was the most frequent, followed by apical type (32.52%), interradicular type (7.95%), apical and interradicular type (7.95%) in descending order of frequency.