No abstract available.
Constriction, Pathologic* ; Spinal Canal*

No abstract available.

Fifteen cases of ventricular septal defect with aortic insufficiency were diagnosed radiographically andconfirmed after operation at Seoul National University Hospital in recent two and half years since 1979.Cineangiographies of ascending aorta and left ventricle were done in those cases and revealed some characteristicfindings. The resuls of the analysis are as follow; 1. Among the 15 cases, 14 cases were male and 1 case wasfemale. Age distribution was from 7 years to 23 years. 2. Those 15 cases were corresponded to 8% among total 193cases of ventricular septal defect, to 11% among total 135 cases of aortic insufficiency and especially to 48%among 48 cases of aortic in sufficiency below age of 20 years. 3. After operation, 11 cases were confirmed assubpulmonary type ventricular septal defect and 4 cases as subcristal type. The sizeds of the ventricular septaldefects were ranged between 0.6 and 2.5cm in diameter. 4. Regurgitation of contrast media was noticed in cineaortography of all cases, and the grades of regurgitation were II-III/IV in 13 cases. 5. Various types ofherniated aortic cusp through ventricular septal defect were seen. In the cases of subpulmonary ventricular septaldefect characteristic saccular aneurysm was found in 7 cases. Asymmetry or mild bulging of aortic sinus was foundin the cases of subcristal ventricular septal defect. 6. Infundibular stenosis was found in 3 cases with rightventriculography and those were caused by the herniated saccular aneurysm of aortic cusp. 7. It is essential forthe diagnosis of ventricular septal defect with aortic insufficiency to undertake biplane cineangiography ofascending aorta and left ventricle in long axial view and right ventriculograhy should be done in suspicion ofinfundibular pulmonary stenosis.
Age Distribution ; Aneurysm ; Aorta ; Cineangiography ; Constriction, Pathologic ; Contrast Media ; Diagnosis ; Heart Septal Defects, Ventricular ; Heart Ventricles ; Humans ; Male ; Pulmonary Valve Stenosis ; Seoul ; Sinus of Valsalva

Conventional posteroanterior chest radiographs of 73 patients with mitral valve disease who had surgery were analyzed, and particular attention was directed to the absence of the convexity of the left lower mid cardiacborder (left atrial segment) and to the relation with duration of illness, atrial fibrillation, pulmonary capillary wedge pressure (PCWP) as well as surgical findings. The results obtained are as follows; 1. The flatness or concavity of this segment, despite other evidence of left atrial enlargement, was observed in eleven (64.7%) of17 patients who had left atrial thrombosis and six(10.7%) of 56 patients who did not have thrombosis(false positive diagnosis). Six (35.3%) of the 17 patients who had left atrial thrombosis did not show this finding on radiographs(false positive diagnosis). Six(35.3%) of the 17 patients who had left atrial thrombosis did not showthis finding on radiographs (false negetive diagnosis). Therefore, the accuracy in the diagnosis of thrombosis of left atrium was 64.7%(eleven of seventeen) for patients who had thrombosis of left atrium. 2. The atrial fibrillation was observed in sixteen (94.1%) of 17 patients who had left atrial thrombosis. So, correlation between the presence of left atrial thrombosis and atrial fibrillation was evident. But there was no correlationbetween the duration of illness or the PCWP of patients and the presence of left atrial thrombosis.
Atrial Fibrillation ; Diagnosis ; Heart Atria ; Humans ; Mitral Valve ; Pulmonary Wedge Pressure ; Radiography, Thoracic ; Thorax ; Thrombosis

Postrenal segment anomalies of inferior vena cava such as bilateral inferior vena cava and left-sided inferiorvena cava can simulate lymphadenopathy on CT scan and these anomalous veins need consideration in retroperitonealoperations such as procedures for prevenetion of venous embolism, splenorenal shunt operation and aorticprosthetic repalcement. Retrocaval ureter is a rare cause of obstructive uropathy or medical deviation of ureter.We analysed 16 cases of postrenal segment anomalies daignosed by CT, vena cavography, retrograde pyelography andultrasonography including six rare positional anomalies at hepatic segment of inferior vena cava diagnosed bycardiac angiography. The results were as follows. 1. Postrenal segment anomalies were 6 cases of bilateral IVC, 8cases of left-sided IVC and 2 cases of retrocaval ureters. On CT scan, 3 cases of bilateral IVC and 4 cases ofleft-sided IVC were accompained by malignant tumors, but caval veins could be discriminated from enlarged nodesbecause of continuous tubular nature of vein on consecutive sections with homogeneous strong enhancement. Twocases of retrocaval ureters showed hydroureteronephrosis due to ureteral compression by IVC. 2. Hepatic segmentanomalies were 6 cases. Five cases of IVC on left side of vertebral crossed midline at live to enter right-sidedright atrium and one case of IVC on right side crossed midline to enter left-sided right atrium. Four cases ofcomplex cardiac anomalies, 4 cases of asplenia and 2 cases of situs ambigus were associates with these anomalies.
Angiography ; Embolism ; Heart Atria ; Lymphatic Diseases ; Retrocaval Ureter ; Splenorenal Shunt, Surgical ; Tomography, X-Ray Computed ; Ureter ; Urography ; Veins ; Vena Cava, Inferior

PURPOSE: The purposes of this study were to analyze the MR findings of medulloblastoma, and to evaluate the subarachnoid dissemination and the significance of contrast enhanced MR of brain and spine for tumor.. MATERIALS AND METHODS: The preoperative brain MR studies of 18 patients (9 males, 9 females;mean age, 9.4 years) with surgically proved medulloblastomas were retrospectively reviewed to characterize these neoplasms with regard to their location, size, MR signal intensity, appearance after contrast enhancement, presence of cyst and necrosis, subarachnoid dissemination, and other associated findings. In 14 patients postoperative spine MR studies were evaluated for staging and therapeutic planning. RESULTS: The most frequent location of medulloblastoma was the inferior vermis and the mean tumor size was 4.1 x 3.6 x 3.9 cm. On Tl-weighted image, medulloblastomas generally had low to intermediate signal, predominantly hypointense relative to white matter. On T2-weighted image, medulloblastomas showed modetately high signal, hyperintense relative to white matter. Inhomogeneous contrast enhancement was demonstrated in 13 patients(72.2%) after injection of gadopentetate dimeglumine(Gadolinium). Cyst and necrosis within the tumor were visualized in 15 patients(83.3%). Subarachnoid disseminations of medulloblastomas were noted in 11 patients(61.1%), of which 6 demonstrated intracranial and 2 intraspinal dissemination. Three had both intracranial and intraspinal dissemination. In nine cases with intracranial lesions, there were intraparenchymal mass formation(7), subarachnoid nodules(5), infundibular lesions(2) and diffuse gyral enhancement(I). In five cases with intraspinal lesions, there were extramedullary intradural small nodules(3), central canal nodules(2), intradural masses(I)and fine nodular and sheet-like leptomeningeal enhancement(1). Other associated findings included intratumoral hemorrhage(11.1%), per/tumoral edema(44.4%), tonsillar herniation(44.4%), hydrocephalus(88.9%) and calcification(44.4%). CONCLUSION: Medulloblastomas revealed low to intermediate signal intensity on Tl-weighted image and intermediate to moderately high signal intensity on T2-weighted image, relative to cerebellar white matter. Medulloblastomas were solid tumors with cystic necrosis, which showed inhomogeneous enhancement and subarachnoid disseminations to the intracranial and intraspinal spaces after Gd-DTPA enhancement. Gd-enhanced MR of brain and spine was an useful diagnostic modality in preoperative diagnosis and in staging of postoperative cases of medulloblastomas, which was superior to postcontrast CT or precontrast MR.
Brain* ; Diagnosis ; Gadolinium DTPA ; Humans ; Male ; Medulloblastoma ; Necrosis ; Retrospective Studies ; Spine*

No abstract available.
Blotting, Southern* ; Diagnosis* ; DNA* ; Humans*

No abstract available.

Background: It is quite difficult to distinguish retractile testis from gliding testis, which requires different treatment planning in the clinic setting. We evaluated practice patterns of urologists in Korea regarding the diagnosis and management of retractile and gliding testes. Methods: We mailed or e-mailed self-completion questionnaires consisting of 20 items to 106 urologists practicing in Korean hospitals concerning the diagnosis and treatment of cryptorchidism. We collected and analyzed the responses statistically. Results: Responses were received from 62 urologists. The response rate was 58.5%. Thirtyseven urologists (59.7%) actually felt they had difficulty in distinguishing retractile testis from gliding testis in the clinic setting. This rate was higher for non-pediatric urologists (78.1%) than for pediatric urologists (40.0%) (P = 0.006). In cases of infant retractile testis, only five urologists (8.1%) said that they would perform orchiopexy immediately, with 54 (87.1%) urologists saying they would do follow-up. In cases of preschool-age children with retractile testis, 17 urologists (27.4%) said that they would perform orchiopexy immediately with 41 (66.1%) urologists saying they would do follow-up. In cases of infant gliding testis, 37 urologists (59.7%) said that they would perform orchiopexy immediately with 24 (38.7%) urologists saying they would do a follow-up. Conclusion More than half (59.7%) of Korean urologists revealed it challenging to distinguish retractile testis and gliding testis in the clinical setting. The more it was difficult to diagnose retractile testis with certainty, the more frequent surgical correction was chosen for treatment. Therefore, it is essential to prevent unnecessary surgical treatment by establishing a practical guideline.

Congenital anomaly of IVC is rare, but understanding of this anomaly is important in radiological diagnosis,angiographic procedures and major retroperitoneal and thoracic surgery. We analysed 23 cases of IVC interruptiondiagnosed by cardiac angiography at Seoul National University Hospital. The results were as follows: 1. Theincidence of infrahepatic interruption of IVC was 0.45% of the patients having cardiac angiography and mostpatients showed cyanosis(91%). 2. The most common associated cardiac anomaly was right ventricular outflow tractobstruction (60%). Other associated cardiac defects were VSD, ASD, valvular anomaliesin 9 cases(39%) respectively;double outlet right bentricle, bilateral superior vena cava, single ventricle in 6 cases(26%) respectively; singleatrim, PDA in 5 cases(22%) respectively. 6 cases of situs inversus, 3 cases of situs ambiguus,2 cases of visceralheterotaxia and one case of asplenia were observed also. 7 cases of left-sided IVC were associated with IVCinterruption in normal situs.
Angiography ; Humans ; Seoul ; Situs Inversus ; Thoracic Surgery ; Vena Cava, Inferior ; Vena Cava, Superior