• Journal of Chest Surgery
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• v.11 no.4
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• pp.433-440
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• 1978

Congenital diaphragmatic hernia is an important cause of respiratory distress in the newborn. Eventration, with which these conditions are easily confused, may also Produce severe respiratory distress in infancy or be an asymptomatic radiographic finding. Harrington`s classification of diaphragmatic hernias into two categories, traumatic and nontraumatic, is most widely accepted. Nontraumatic hernias are [1] the congenital types, composed of the posterolateral [Bochdalek], those through the esophageal hiatus, the parasternal [/Morgagni], and those through a defect left by partial absense posteriorly, and [2] the acquired types, composed of those through the esophagea/hiatus [sliding and paraesophageal] and those the sites mentioned above under the congenital hernias. During the period from 1970 up to October 1978, 21 cases of diaphragmatic hernia were treated in department of cardiovascular and thoracic surgery. 11 cases of Bochdalek hernias, 1 case of Morgagni hernia, 5 cases of diaphragmatic eventration and 3 cases of hiatal hernia [2 cases of paraesophageal and 1 cases of sliding type], were experienced. 3 cases of 20 died of respiratory insufficiency, 2 cases of mortality were combined with left lung hypoplasia with Bochdalek hernia.

• Journal of Veterinary Clinics
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• v.18 no.3
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• pp.273-278
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• 2001

Chronic mitral valvular insufficiency (CMVI) is the most common heart disease in dogs. The prevalence of CMVI is age-dependent. CMVI is usually affected to small to medium size breeds. It is more prevalent in males than females. The characteristic lesions of CMVI are caused by an acquired chronic structural degeneration of the mitral valve defined as endocardiosis or myxomatous degeneration. The main clinical signs are cough, respiratory distress, weakness and pleural effusion and ascites by secondary right-sided heart failure. The most prominent clinical finding is a systolic heart murmur. The thoracic radiography and echocardiography are useful methods in diagnosis of CMVI. Thoracic radiographic findings are left atrial enlargement, left main stem bronchial compression and pulmonary edema. Echocardiography is confirmed to increased left atrial and ventricular dimension, mitral regurgitation, mitral valve thickening and abnormal movement. Thoracic radiography and echocardiography are used to obtain a definite diagnosis of CMVI, and then to study the progression of the condition.

• Imaging Science in Dentistry
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• v.39 no.2
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• pp.99-102
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• 2009

Adenomatoid odontogenic tumor (AOT) is a tumor of odontogenic epithelium with varying degrees of inductive changes in the connective tissue. The common radiographic appearance of AOT is a unilocular radiolucency associated with an unerupted tooth. Detectable radiopacities have been reported in many cases. We present a case of AOT in a 9-year old-female patient. Cystic lesion with numerous, punctuate radiopaque foci was observed on the anterior region of the mandible. These radiopacities were situated mostly on the buccal side of impacted tooth on the multi-planar images of cone beam computed tomograph. Characteristic duct like structures and amyloid like material were observed on histopathologic finding. (Korean J Oral Maxillofac Radiol2009; 39 : 99-102)

• Imaging Science in Dentistry
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• v.36 no.3
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• pp.157-162
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• 2006

Familial gigantiform cementoma is a rare fibre-cemento-osseous disease of the jaws which appears to be transmitted as an autosomal dominant trait with variable expressivity of the phenotype. A 7-year-old girl visited DKUDH complaining of the painless facial deformity. Clinically, significant facio-lingual expansion was observed at the left maxilla, left mandibular body and symphysis portion. Malposition of lower anterior teeth was found. Panoramic radiograph and CT scan showed the extensive expansile mixed lesion at maxilla and mandible. Bone scan revealed hot spot at the maxilla and left side of mandible. Histologic examination revealed moderately dense fibrous connective tissue with scattered masses resembling cementum. The patient's mother had a history of the mandibular resection due to benign tumor. Her younger brother had buccal expansion of right mandible. We report our finding of a family that has exhibited clinical, radiographic and histologic findings consistent with the familial gigantiform cementoma.

• Imaging Science in Dentistry
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• v.46 no.1
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• pp.47-51
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• 2016

Herein, we report and discuss the detection of fossa navicularis magna, a close radiographic anatomic variant of canalis basilaris medianus of the basiocciput, as an incidental finding in cone-beam computed tomography (CBCT) imaging. The CBCT data of the patients in question were referred for the evaluation of implant sites and to rule out pathology in the maxilla and mandible. CBCT analysis showed osseous, notch-like defects on the inferior aspect of the clivus in all four cases. The appearance of fossa navicularis magna varied among the cases. In some, it was completely within the basiocciput and mimicked a small rounded, corticated, lytic defect, whereas it appeared as a notch in others. Fossa navicularis magna is an anatomical variant that occurs on the inferior aspect of the clivus. The pertinent literature on the anatomical variations occurring in this region was reviewed.

• Journal of Korean Neurosurgical Society
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• v.39 no.6
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• pp.451-454
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• 2006

We present a case of a 68-year-old female with an atypical form of spinal tuberculosis, which involved posterior elements with multiple foci in two noncontiguous vertebral levels. The lesions caused spastic paraparesis and urinary hesitation. There was no evidence of pulmonary or other extrapulmonary tuberculous disease. Based on clinical and radiographic findings, this atypical spinal tuberculosis was preoperatively misdiagnosed as metastatic spine tumor. The histopathologic finding confirmed tuberculosis and the patient was treated successfully with surgery and antituberculous therapy. In case of a spinal lesion of unknown origin, it is important to be aware that atypical spinal tuberculosis can mimic metastatic spine tumor and tuberculosis should always be considered.

• Imaging Science in Dentistry
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• v.51 no.1
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• pp.87-90
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• 2021

The increased use of cone-beam computed tomographic (CBCT) scans has made it increasingly necessary to evaluate incidental findings on CBCT scans. This report describes the case of a 66-year-old female patient who presented to the Department of Oral and Maxillofacial Pathology, Radiology and Medicine at the College of Dentistry of the author's institution and underwent a CBCT scan for maxillary alveolar process implant planning. Upon evaluation of the CBCT scan, a radiopaque (soft tissue attenuation) mass in the left superior aspect of the nasal cavity and left locule of the sphenoid sinus with opacification of the left locule of the sphenoid sinus was incidentally noted. These radiographic findings were suggestive of a space-occupying mass with a high possibility of malignancy. A further medical evaluation confirmed renal cell cancer metastasis to the sphenoid sinus. This study shows the significance of reviewing the entire CBCT scan for incidental findings.

• Journal of Korean Dental Science
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• v.1 no.1
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• pp.4-9
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• 2008

Purpose : This study sought to examine the aspects of crestal bone resorption and to evaluate the clinical outcomes of the TiUnite$^{(R)}$ (Nobel Biocare, Sweden) anodized implant system. Materials and Methods : Among the 67 patients (211 fixtures) who were treated using TiUnite(r) implants at Seoul National University Bundang Hospital between March 2004 and January 2007, 26 (91 fixtures) were considered in this study. Initial and secondary stabilities were measured using Periotest$^{(R)}$ and Ostell(tm) Mentor. The radiographic evaluation of crestal bone resorption was carried out by measuring the change in crestal bone level at the time of surgery compared to that 1 year after loading. Panoramic radiograph and periapical radiograph were used. Based on the radiographic findings, the shapes of crestal bone resorption were classified. Results : The average amount of crestal bone resorption after 1 year of functional implant loading was 0.30 mm. There was no saucerization in 40 implant fixtures (43.9%), although more than 1 thread were exposed in 51 implant fixtures (56.6%). The success rate of the implants was 94.5%, and the survival rate was 100%. Conclusions : Good clinical outcomes and minor crestal bone resorption were noted in this study. Saucerization for the establishment of biological width was not a general finding in the TiUnite$^{(R)}$ anodized implant system.

• Journal of Korean Academy of Oral and Maxillofacial Radiology
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• v.19 no.1
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• pp.89-101
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• 1989

The author observed and analyzed the age, sex, chief complaint and radiographic finding of sixty-one cases of benign odontogenic tumors seen in Yonsei Medical Center, for the period of Jan. 1979 to Aug. 1989. The results were as follows: 1. Benign odontogenic tumors of 61 cases included 52 cases (85.3%) of ameloblastoma and odontoma, and 9 cases of other lesions. Radiographically, the border of the lesions were well-defined. 2. Ameloblastoma constituting twenty-seven cases (44.3%) occurred the average age of 31.1 years and had a 3:1 male predominance. The most common complaint was swelling (20 cases, 74.0%) and followed by pain (13 cases, 48.2%). Radiographically, the most common site was mandibular body area (74.0%) and the lesions were mainly multiocular radiolucency; in 17 cases (63.0%) and unilocular radiolucent lesion were seen in 10 cases (37.0%). 16 cases (59.3%) showed the resorption of roots of adjacent teeth. 3. Odontoma constituting twenty-five cases (41.0%) discovered at the average age of 16.9 years and had a 3:2 male predominance. The most common complaint was delayed eruption of tooth (8 cases, 31.0%) and 7 cases (27.0%) detected on a routine radiograph of the area. Radiographically, 17 cases (68.0%) were of compound type and 8 were of complex variety and compound odontomas were common in the anterior maxilla, whereas complex odontomas occurred more frequently in the posterior mandible. 19 cases (76.0%) showed the impaction of adjacent teeth.

• The Journal of the Korean bone and joint tumor society
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• v.20 no.2
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• pp.66-73
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• 2014

Purpose: Various diagnostic imaging modalities have been used to evaluate the effect of neoadjuvant chemotherapy for osteosarcoma early and noninvasively. We evaluated the effectiveness of imaging studies of plain radiographs and positron-emission tomography/computed tomography (PET/CT) in predicting neoadjuvant chemotherapy effect for osteosarcoma and tried to establish a general principle in interpretation of PET/CT parameters. Materials and Methods: Eighteen patients who underwent two cycles of neoadjuvant chemotherapy and surgical excision for osteosarcoma were enrolled. There were 13 males and 5 females, with a median age of 19 (11-63) years. Fifteen patients of 18 had the American Joint Committe on Cancer (AJCC) stage IIB. They had plain radiographs and PET/CT before and after neoadjuvant chemotherapy. The resected tumor specimens were pathologically examined to determine histological response grade using a conventional mapping method. Statistical analysis was performed to evaluate the correlation between histopathological necrosis rate, and radiographic finding category, post-chemotherapy maximum standardized uptake value (SUVmax), average standardized uptake value and metabolic tumor volume (MTV) as well as reduction rates of them. Results: Eight patients were good responders to neoadjuvant chemotherapy based on histological evaluation. Median SUVmax reduction rate was 73 (23-77) % in good responders and 42 (-32-76) % in poor responders. Median MTV reduction rate was 93.5 (62-99) % in good responders and 46 (-81-100) % in poor responders. While radiographic finding category was not different according to histological response (p=1.0), SUVmax reduction rate was significantly different (p=0.041). Difference in MTV reduction rates approached statistical significance as well (p=0.071). Conclusion: While radiographic finding category was not reliable to assess neoadjuvant chemotherapy effect for osteosarcoma, reduction rate of SUVmax was a useful indicator in this study. As parameters of PET/CT can be influenced by various factors of settings, different centers have to make an effort to establish their own standard of judgement with reference of previous studies.