PURPOSE: To correlate the CT findings of renal cell carcinomas with nuclear grading in histopathology. MATERIALS AND METHODS: Preoperative CT scans and pathologic nuclear grading of 60 surgically resected renal cell carcinomas in 55 patients were retrospectively and independently reviewed. RESULTS: As nuclear grade increased, renal cell carcinomas were more likely to be of higher stage(92% of nuclear grade III renal cell carcinomas was of stage Ill, all Grade IV tumors were of stage IIIb or higher) and greater size(84% of grade III tumors and 100% of grade IV tumors>5cm in size) at presentation, and appeared more heterogeneous(84% of grade III tumors and 88% of grade IV tumors showed moderate or severe heterogeneity) and less well marginated(84% of grade Ill tumors and 100% of grade IV tumors had irregular or imperceptible margins). CONCLUSION: Small well-marginated homogeneous renal cell carcinomas were either nuclear grade I or II, and were distinguishable from the more aggressive nuclear grade III or IV lesions, which generally displayed irregular margins and greater inhomogeneity.
Carcinoma, Renal Cell* ; Humans ; Retrospective Studies ; Tomography, X-Ray Computed

No Abstract Available.
Allografts* ; Anterior Cruciate Ligament Reconstruction* ; Anterior Cruciate Ligament* ; Tendons*

No abstract available.
Emphysema* ; Heart Septal Defects, Ventricular*

Objectives: This study aimed to evaluate the changes in clinical indexes related to periodontitis, such as malodor, gingival and plaque indexes, during the adjuvant use of a high pressure oral irrigator (COMORAL ® , SMDsolutions, Seoul, Korea) in volunteers. Methods: We recruited 17 volunteers from an advertisement posted on Dankook University’s bulletin board. The oral malodor, gingival index, and plaque index of each volunteer were during the adjuvant use of a high pressure oral irrigator within a 4-week period. Results: Routine tooth brushing was done together with the adjuvant use of a new high pressure oral irrigator in the 4-week period. The oral malodor, gingival index, and plaque index measured after 2 and 4 weeks of use significantly decreased (P＜0.05) compared with the baseline values obtained before the start of the study. Conclusions The adjuvant use of a new high pressure oral irrigator with routine tooth brushing in volunteers may more effectively manage daily oral hygiene.

No abstract available.
DNA* ; Lymphoma, Non-Hodgkin*

The present study evaluated the effects of guided tissue regeneration using biodegradable membrane, with and without calcium-phosphate thin film coated deproteinated bone powder in beagle dogs. Contralateral fenestration defects(6 x 4 mm) were created 4 mm apical to the buccal alveolar crest on maxillary canine teeth in 5 beagle dogs. Ca-P thin film coated deproteinated bone powder was implanted into one randomly selected fenestration defect(experimental group). Biodegradable membranes were used to provide bilateral GTR. Tissue blocks including defects with overlying membranes and soft tissues were harvested following a four- & eight-week healing interval and prepared for histologic analysis. The results of this study were as follows. 1. The regeneration of new bone, new periodontal ligament, and new cementum was occurred in experimental group more than control group. 2. The collapse of biodegradable membranes into defects were showed in control group and the space for regeneration was diminished. In experimental group, the space was maintained without collapse by graft materials. 3. In experimental group, the graft materials were resorbed at 4 weeks after surgery and regeneration of bone surrounding graft materials was occurred at 8 weeks after surgery. 4. Biodegradable membranes were not resorbed at 4 weeks and partial resorption was occurred at 8 weeks but the framework and the shape of membranes were maintained. No inflammation was showed at resorption. In conclusion, the results of the present study suggest that Ca-P thin film coated deproteinated bone powder has adjunctive effect to GTR in periodontal fenestration defects. Because it has osteoconductive property and prohibit collapse of membrane into defect, can promote regeneration of much new attachment apparatus.
Animals ; Cuspid ; Dental Cementum ; Dogs* ; Guided Tissue Regeneration* ; Inflammation ; Membranes* ; Periodontal Ligament ; Regeneration ; Transplants

No abstract available.
Plasma* ; Spectrum Analysis* ; Trace Elements*

Intracranial meningioma is one of the most easily detectable tumor in the preoperative period with the brain computerized tomographic(CT) scan. Although most of them are of benign nature, they present tendency to invade surrounding brain tissue and to recur in spite of complete surgical removal. Authors analysed the clinical features of 27 cases of histologically verified meningiomas and attempted to study the correlation between CT findings and histological types to predict their clinical invasiveness and aggressiveness. Female was predominated in occurance than male in the ratio of 17:10. Mean age of occurance was 40.5-year-old. The most frequent symptoms and signs were headache, papilledema and visual disturbance in order. The most frequent histological type was meningotheliomatous type(55.6%) which was followed by transitional(18.5%), fibroblastic(18.5%) and angioblastic(7.4%) types. In the finding of the brain CT scan, perifocal brain edema was noticed in nearly almost cases and high density of the tumor mass in the precontrast CT scan was predominated in transitional and fibroblastic types. But, marked perifocal brain edema, irregular tumor margin, loss of homogeneity of the tumor density and marked contrast enhancement, which were considered to be more aggressive and invasive findings, were predominated in the meningotheliomatous and angioblastic types. So, these types seemed to be more aggressive and invasive than other types. Large cystic meningiomas were 14.8% in author's cases.
Brain ; Brain Edema ; Female ; Fibroblasts ; Headache ; Humans ; Male ; Meningioma ; Papilledema ; Preoperative Period ; Tomography, X-Ray Computed

Dural metastasis associated with chronic subdural hematoma is very rare in patients with malignant neoplasms; it may be difficult to distinguish malignant neoplasms from chronic subdural hematoma. Chronic subdural hematoma is usually a late manifestation of malignant tumors, which contributes to the severity of the prognosis. The scans obtained by using magnetic resonance imaging or computed tomography may be misleading when a subdural hematoma masks the underlying tumor. Herein, we report a case of a subdural hematoma with dural metastasis of unknown origin in a 45-year-old woman; however, the neoplasm was not detected until autopsy.
Adenocarcinoma ; Autopsy* ; Female ; Hematoma, Subdural* ; Hematoma, Subdural, Chronic ; Humans ; Magnetic Resonance Imaging ; Masks ; Middle Aged ; Neoplasm Metastasis ; Prognosis

A 31-year-old woman with surgically proven spinal extradural granulocytic sarcoma was examined with magnetic resonance (MR) imaging. This patient had no evidence of systemic leukemia. The signal intensities of the mass on T1-weighted and gradient echo images were higher than those of spinal cord, which were different from iso-intensity of cases reported by other authors.
Adult ; Female ; Humans ; Leukemia ; Magnetic Resonance Imaging* ; Sarcoma, Myeloid* ; Spinal Cord