Mixed Mullerian tumors are rate uterine malignancy and occur primarily in postmenopausal women. We have experienced three case of pathologically proven mixed Mullerian tumor. Two cases had prior history of pelvic irradiation for uterine cervical carcinoma. We suggest that mixed Mullerian tumor should be suspected when an enlarged uterus with polypoid masses in the uterine cavity are initially observed in postmenopausal women who had history of pelvic irradiation.
Female ; Humans ; Magnetic Resonance Imaging* ; Uterus

Mixed Mullerian tumors are rate uterine malignancy and occur primarily in postmenopausal women. We have experienced three case of pathologically proven mixed Mullerian tumor. Two cases had prior history of pelvic irradiation for uterine cervical carcinoma. We suggest that mixed Mullerian tumor should be suspected when an enlarged uterus with polypoid masses in the uterine cavity are initially observed in postmenopausal women who had history of pelvic irradiation.
Female ; Humans ; Magnetic Resonance Imaging* ; Uterus

A multiple regression analysis using ordinary least square (OLS) is frequently used for the projection of healt expenditure as well as for the identification of factors affecting health care costs. Data for the analysis often have mixed characteristics of time series and cross section. Parameters as a result of OLS estimation, in this case, are no longer the best linear unbiased estimators (BLUE) because the data do not satisfy basic assumptions of regression analysis. The study theoretically examined statistical problems induced when OLS estimation was applied with the time series cross section data. Then both the OLS regression and time series cross section regression (TSCS regression) were applied to the same empirical data. Finally, the difference in parameters between the two estimations were explained through residual analysis.
Health Care Costs ; Health Expenditures*

The total 223 cases of tetralogy of Fallot is analysed angiographically, in which selective biplanecinecardioangiography with axial projection has been done at the Departement of Radiology, Seoul National University Hopital, in recent 2 year and 4 months, with specific refrence to the location of pulmonic stenosis,and associated cardiac anomalies. The summary of the analysis is as follow; 1. Left ventriculogram (long axialoblique view) was necessary to detect the ventricular septal defects including anterior marginal VSD, and washelpful to identify the coronary artery anatomy and presence of PDA and evaluate the size of left ventricle. 2.Right ventriculogram(elongated RAO view) was the best projection for the demonstration of pulmonic infundibulumand was essential to differenciate and localize the ventricular septal defects. 3.In the right ventriculogram(4chamber view), well demonstrated the right ventricular outflow tract, pulmonary valve, and pulmonaryarteries(main, right, left and peripheral), and also perimitted the detection of ASD in levophase. 4. The positionof ventricular septal defects was perimembranous in 199 cases(89.2%), subarterial in 15 cases(6.8%) andinfundibular (intracristal) in 9 cases(4%). Multiple ventricular septal defects (perimembranous& marginal ) werefound in 11 cases(4.5%). 5. In 35 cases(15.5%), pulmonary stenosis is found only in pulmonary infundibulum. Thecombination of its components was most commonly anterior wall and conus septum hypertrophy in 24 cases(68.6%) 6.Combined pulmonary stenosis was identified in 188 cases(84.3%). The most common combination was infundibular andpulmonary valvular stenosis in 56 cases(29.8%) 7. Associated cardiac anomalies were right aortic arch in 53 cases(23.8%), persistent left SVC in 17 cases (7.7%), ASD in 13 cases (5.9%), PDA in 9 cases(4.1%), aberrant subclavianartery in 5 cases(2.2%), IVC interruption with azygos continuation in 2 cases, single coronary artery in 2 cases,and anterior descending artery from right coronary artery in 1 case, etc. 8. Selective biplanecinecardioangiography with axial projection is essential to evaluate the size of left ventricle and to localizethe ventricular septal defects and pulmonary stenosis, and to detect associated cardiac anomalies in T.O.F. Sometimes aortography is necessary when anomaly of coronary arteries is suspected.
Aorta, Thoracic ; Aortography ; Arteries ; Constriction, Pathologic ; Conus Snail ; Coronary Vessels ; Heart Septal Defects, Ventricular ; Heart Ventricles ; Hypertrophy ; Pituitary Gland ; Pulmonary Valve ; Pulmonary Valve Stenosis ; Seoul ; Tetralogy of Fallot

No abstract available.
Angiography ; Contrast Media ; Rabbits

MR imaging of the brain in 34 patients were reviewed to characterize the MR findings of brain damage due to perinatal hypoxic insult All the patients had a history of perinatal hypoxia and showed abnormal brain MR findings. Out of 34, eight infants were born premature and twenty-six were born at term or post-term. MR findings were analysed for the extent and location of abnormalities of the white matter, cortical abnormality. Corpus callosum atrophy, and abnormal progression of myelination. The major abnormalities were abnormal signal lesions or atrophy of the cerebral white matter and gyral atrophy of the cerebral cortex. The distribution of white matter lesions well correlated with maturity of the brain at the time of hypoxic insult. Periventricular and deep white matter lesions predominated in the premature-born patients. Corpus callosum atrophy was frequently seen. Reflecting the location of white matter injury. Delay in myelination was present in 55%. MR is a very useful diagnostic imaging modality and guide for the prediction of prognosis by accurate depiction of the location and extent of brain damage due to perinatal hypoxic insult.
Anoxia* ; Atrophy ; Brain* ; Cerebral Cortex ; Corpus Callosum ; Diagnostic Imaging ; Humans ; Infant ; Magnetic Resonance Imaging ; Myelin Sheath ; Prognosis ; White Matter

We present a case which seems identical to REM(Reticular Erythematous Mucinosis) syndrome in 26 year-old male. The lesion was initiated about 2 years ago and waxed and waned. The clinical findings were localized, grouped, erythematous papules and vesicles on the anterior middle chest with intermittent mild itching. Histopathology showed normal epidermis, extensive mucin deposition, telangiectasia and mild perivascular round cell infiltrations on the upper dermis. The mucin was stainable with alcian blue at pH 2. 5, but was not stained by either PAS or mucicarmine. Skin lesions were not responded to the oral steroid, but improved slowly after topical application of 5% para-aminobenzoic acid in ethanol for 9 months. The lesion does not recur until present time.
4-Aminobenzoic Acid ; Adult ; Alcian Blue ; Dermis ; Epidermis ; Ethanol ; Humans ; Hydrogen-Ion Concentration ; Male ; Mucins ; Pruritus ; Skin ; Telangiectasis ; Thorax

PURPOSE: Pediatric sedation is an important factor for obtaining the images of good quality. We performed this study to analyze the efficacy of our sedation protocol using chloral hydrate. MATERIALS AND METHODS: We collected prospectively 151 sedation records of children(1 day-15 years old), who were sedated with chloral hydrate for MR(n=112) or CT(n=39) studies. We initially administered 50mg/Kg orally(n=94) or rectally(n=57) 30 minutes before the scheduled examinations, and then administered additionali dose (second dose :25-35mg/Kg, third dose:10-15mg/Kg) to patients whom initial dose failed to sedate. RESULTS: Satisfactory sedation was achieved by initial administration in 109 patients(72%) without si difference between oral(per oral: P.O.) and rectal(per rectal: P.R.) administration. Second dose was required in 28% and third dose in 5%. MR and CT examinations required second dose in 36(32%) and 6 patients(15%), respectively. P.O. -patients vomited in 5%. P.R. -patients defecated in 22% after initial administration. There were no other serious complications. Time interval from the drug administration to the start of examinations was 33 minutes in initial-dose-group and 64 minutes in additional-dose-group. Two patients could not complete MR examination due to early arousal. Prolonged sedation, requiring more than 30 minutes for alertness after MR and CT examinations, was encountered in twenty(18%) and two patients(5%), respectively. CONCLUSION: Our protocol using chloral hydrate(P.O. or P.R.) is thought to be an effective and safe method for pediatric sedation for MR or CT imaging.
Arousal ; Child* ; Chloral Hydrate* ; Humans ; Prospective Studies

Abrupt increase in the size of cervico-mediastinal tumor due to infection or spontaneous hemorrhage into cyst can induce severe tracheal compression and therefore sudden death. A 5 year old boy, who had a history of URI, had an enlarging cystic hygroma on the right side of the neck and anterior mediastinum. Under diagnosis of the cervico-mediastinal cystic hygroma, surgical removal was scheduled. After induction of anesthesia, intubation was done without any difficulty. A few minutes later, signs of partial airway obstruction were appeared. And within a very short period, total airway occlusion occurred. The tracheal tube was removed and manual ventilation was performed with positive airway pressure, but ineffective. We attempted to puncture cricothyroid membrane with 14 Gauge needle in order to ventilate manually. As soon as we puncture cricothyroid membrane, straw-colored fluid, not air, gushed out through a needle. After aspiration of about 200ml of cystic fluid, the obstructive signs disappeared and the patency of the airway was maintained. Intraoperatively, no more airway problems occured and vital signs were stable. And postoperatively, patient had no specific complications and discharged on the 7th day after operation.
Airway Obstruction* ; Anesthesia ; Child, Preschool ; Death, Sudden ; Diagnosis ; Hemorrhage ; Humans ; Intubation ; Intubation, Intratracheal* ; Lymphangioma, Cystic* ; Male ; Mediastinum ; Membranes ; Neck ; Needles ; Punctures ; Ventilation ; Vital Signs

PURPOSE: There have been repoty on radiological features of lower respiratory track infection in infants and children caused by RSV(respiratory syncytial virus) in KOREA. The aims of this study were to summarize radiological features of lower respiratory tract infection caused by common viral agents other than RSV and to find any specific radiological features which might provide clue to the etiologic diagnosis. MATERIALS AND METHODS: We retrospectively analyzed radiological features in 51 children with symptoms of lower respiratory tract infection and identification of viral agents(except RSV). They included parainfluenza (n=22), adenovirus(n=16), influenza A(n--11), influenza B(n=2) virus infections. The mean age of the patients was 23 months. RESULTS: Major radiological findings of viral lower respiratory tract infection were bilateral parahilar peribronchial infiltration(62%), bilateral overaeration(60%), atelectasis(59%)(segmental or subsegmental atelectasis(43%), Iobar atelectasis(16%)) and patchy or confluent consolidation(20%). Pleural effusion was seen in only one case and hilar adenopathy was not observed in any of them. In the cares of adeno virus, consolidation was seen in 5 cases(31%) including 3 cases919%) of extensive confluent consolidations and overaerations were less frequent findings(44%) than in other viruses. In 24 patients with radiological follow up for more than 1 week, consolidation improved most rapidly, while was persistent atelectasis. CONCLUSION: The major radiologic features in vital lower respiratory tract infection(except RSV) were overinflation, bilateral peribronchial infiltration and atelectasis. In adenoviral infection, confluent consolidations which are usually seen in bacterial pneumonia were more common findings than in other viral lower respiratory tract infections.
Child ; Diagnosis ; Follow-Up Studies ; Humans ; Infant* ; Influenza, Human ; Korea ; Paramyxoviridae Infections ; Pleural Effusion ; Pneumonia, Bacterial ; Pulmonary Atelectasis ; Respiratory System* ; Respiratory Tract Infections ; Retrospective Studies