No abstract available.
Cholesteatoma* ; Semicircular Canals* ; Temporal Bone* ; Tomography, X-Ray Computed*

Measurement of the normal pituitary gland height was performed on magnetic resonance (MR) images of 144 subjects with no known or suspected pituitary or hypothalamic diseases. Midsagittal T1 weighted images (T1WI) were used for measurement, and mean vertical height according to age and sex group was obtained. In all age groups, the pituitary height was greater in females than in meles, The group of 0-9 years in both genders showed the minimum mean pituitary height, The maximum mean height was observed in the 10-19 years age group in both genders. The height gradually decreased with increasing age after age 20 years. There was no subject with a height more than 9.0 mm in females or 8.0 mm in males. In conclusion the measurement of the normal pituitary pland height using mid sagittal MR imaging can be used for the evaluation of the pituitary gland lesions.
Female ; Humans ; Hypothalamic Diseases ; Magnetic Resonance Imaging ; Male ; Pituitary Gland* ; Sex Differentiation*

PURPOSE: To establish signal intensity characteristics of the trachea according to the histologic layers, we performed in vivo and in vitro MR studies. MATERIALS AND METHODS: We performed MR imaging of the trachea at 1.5T unit in 11 patients mediastinal masses, vascular anomalies, tracheal stenosis or iatrogenic tracheoesophageal fistula, aryepiglottic fold thickening or mass, tracheal carcinoid, one healthy volunteer and one cadaveric trachea. By using anterior, volume neck or 3 inch dual coil with various pulse sequences, axial and coronal images of the trachea were obtained. The tracheal layers with different signal intensity on MR images were correlated with the histology. RESULTS: In vivo and in vitro MR studies revealed two layers of the trachea ;the inner layer had intermediate to high signal and the outer had low signal. The tracheal cartilage showed low signal intensity in all pulse sequences. The submucosa appeared as intermediate signal intensity on T1 weighted images but high signal intersity on other images due to its abundant mucous and mucoserous glands. However, the mucosa and perichondrium could not be defined on MR images. CONCLUSION: Characterization of the signal intensity according to the histologic layers of the trachea might be helpful for the evaluation of intrinsic lesions of the irachea or the possibility of tracheal invasion from the adjacent tumors.
Cadaver ; Carcinoid Tumor ; Cartilage ; Healthy Volunteers ; Humans ; Magnetic Resonance Imaging* ; Mucous Membrane ; Neck ; Trachea ; Tracheal Stenosis ; Tracheoesophageal Fistula

Teratoma is very rarely developed in the third ventricle. We report a case of third ventricular mature teraroma in 12 year old boy with headache and precocious puberty. In TlWl and Gd-DTPA enhanced TlWl, the mass in the third ventricle showed mixed signal intensities with signal void and partial contrast enhancement. The tumor was confirmed as a mature teratoma including teeth and fatty tissue.
Adipose Tissue ; Child ; Gadolinium DTPA ; Headache ; Humans ; Magnetic Resonance Imaging* ; Male ; Puberty, Precocious ; Teratoma* ; Third Ventricle* ; Tooth

This study was carried out to determine the accuracy of Doppler echocardiography for predicting the pulmonary arterial pressure from right ventricular systolic time intervals in 52 patients with ventricular septal defect. The diagnosis of ventricular septal defect was made by cardiac catheterization and angiocardiography at Dong San hospital, Keimyung University during the period of one year from jan. 1988 to Dec. 1988. Doppler measurements of acceleration time (AT), right ventricular ejection time (RVET), right ventricular preejection period (RPEP), AT/RVET, and RPEP/AT were compared with pulmonary arterial pressure (PAP), measured by cardiac catheterization. The patients were divided into 3 groups : PAP< or =30mm Hg, PAP 31-59mm Hg, PAP??0mm Hg. The following results were obtained. 1) In the groups of PAP< or =30mm Hg, AT was 0.12+/-0.01sec, AT/RVET was 0.47+/-0.07 and RPEP/AT was 0.50+/-0.05. 2) In the groups of PAP> or =60mm HG, AT was 0.06+/-0.01sec. AT/RVET was 0.28+/-0.05. RPEP/AR was 1.51+/-0.21. As the level of PAP increased, Doppler AT, AT/RVET and RPEP/AT showed significant change(P<0.001). 3) The Doppler AT showed relative high correlation(r=-0.76) with PAP measured by cardiac catheterization in all group. 4) The Doppler AT/RVET showed correlation(r=-0.70) with PAP. 5) The Doppler RPEP/AT showed high correlation(r=0.91) with PAP. The Doppler echocardiography was easy to apply in all age groups, and was found useful for detecting pulmonary hypertension in ventricular septal defect and for the follow-up check of the patients. It may help to determine the optimal time for surgery and evaluation of the treatment.
Acceleration ; Angiocardiography ; Arterial Pressure* ; Cardiac Catheterization ; Cardiac Catheters ; Diagnosis ; Echocardiography* ; Echocardiography, Doppler ; Follow-Up Studies ; Heart Septal Defects, Ventricular* ; Humans ; Hypertension, Pulmonary ; Systole

No abstract available.
Hypopituitarism* ; Magnetic Resonance Imaging ; Pituitary Gland*

Acute suppurative thyroiditis is uncommon in children. The relative rarity of thyroid infection is thought to reflect its complete fibrous encapsulation, generous vascular and lymphatic supply and high local iodine level. The bacterial involvement include the normal oropharyngeal microflora, and broad spectrum antibiotic therapy including anaerobic coverage should be utilized initially. We have experienced three cases of acute suppurative throiditis. All of them had painfull swelling on anterior cervical area and diagnosed by clinical and radiological features. Since two of them occured repeatedly, we report with brief review of literatures.
Child* ; Humans ; Iodine ; Thyroid Gland ; Thyroiditis, Suppurative*

The peripheral vascular occlusion in the diabetes was studied in fifty-nine male and forty-six female diabetic patients by means of doppler flow meter performed on the dorsalis pedis arteries & post. tibial arteries of the both lower limbs. Patients were divided into two groups, one with occlusion and the other without occlusion. Various predisposing factors causing peripheral vascular occlusions were examined. The results are summerized as follows: 1. Peripheral vascular occlusions were more prevalent in male than in female (male: 25.4%, female: 17.4%). 2. In male patients age, plasma cholesterol level & smoking were statically significant among the various predisposing factors between occlusion & nonocclusion groups. 3. In female patients, duration of diabetes mellitus and the sugar levels of fasting blood and post prandial 2 hours were statiscally significant.
Arteries ; Causality ; Cholesterol ; Diabetes Mellitus ; Fasting ; Female ; Foot ; Humans ; Lower Extremity ; Male ; Open Bite ; Plasma ; Smoke ; Smoking ; Tibial Arteries

Lipomas are the most common benign neoplasm and usually arise in the subcutaneous tissue. The trunk and proximal limbs are the most frequent sites. Mediastinal lipoma is an uncommon benign neoplasm of mediastinum(1-5% of all lipomas). They are most often located in the anterior mediastinum. They can occur singly or multiply in the mediastinum and can stimulate cardiomegaly or pleural effusion on chest X-ray. They are usually well circumscribed and encapsulated but can grow to be quite large:greater than 20 cm and 4 kg in size. A 13-year-old boy was asymptomatic and coincidentally found to have a large soft tissue density in chest X-ray. Computer tomography showed an anterior mediastinal mass consistent of a fat density and vascular structure. Thymus, in the right upper lobe showed mass effect. The mass was surgically excised and pathologically confirmed lipoma. We hereby present the case with review of literature.
Adolescent* ; Cardiomegaly ; Child ; Extremities ; Humans ; Lipoma* ; Male* ; Mediastinal Neoplasms ; Mediastinum ; Pleural Effusion ; Subcutaneous Tissue ; Thorax ; Thymus Gland

No abstract available.
Carcinoid Tumor*