Calcification is exceedingly rare in schwannomas. In the literatures, we found only three reports of schwannomas with calcification. We report two cases of intracranial calcified schwannomas, one in the anterior cranial fossa and the other in the middle cranial fossa.
Cranial Fossa, Anterior ; Cranial Fossa, Middle ; Neurilemmoma*

No abstract available.
Carcinoma, Renal Cell*

PURPOSE: To determine the necessity of site-specific bone mineral density(BMD) measurement and the difference between the BMD of the two femora using DXA in the evaluation of osteoporosis. MATERIALS & METHODS: Total BMD and regional BMD(Lumbar spine, femoral neck, Ward's area, intertrochanter area) were measured on seventy-eight healthy persons without previons diseases, and the statistical significance analyzed. RESULTS: Total BMD did not reliably reflect the site-specific BMD. There was a high correlation between BMD in opposing femora. Correlation coefficients between the femoral neck, Ward's area, trochanter area were 0. 939, 0.874 and 0.916 respectively. CONCLUSION: We conclude that a measuremnt of site-specific BMD is necessory because the total BMD can not reliably predict the regional BMD. The measurement of BMD in one femur can predict the BMD of the contralateral femur. If there is no history of femoral neck disease, unilateral BMD measurement is recommended for femoral evaluation.
Absorptiometry, Photon* ; Femur ; Femur Neck ; Humans ; Osteoporosis ; Spine

Twenty-two children(4 months to 17 years old)with a clincial diagnosis of complex partial seizure(CPS) were examined with a 0.5T MRI scanner using spin-echo sequences. Eleven patients showed abnormal brain MRI findings; two had focal lesions with corresponding seizure foci on the EEG, one arising from temporal lobe(Hippocampal Formation atrophy) and the other from the frontal lobe. Nine patients showed diffuse lesions with inconsistent seizure foci on EEG. The remaining 11 patients were normal on bran MRI; two of them had normal EEG findings and the others either focal or diffuse abnormalities on EEG.
Brain* ; Child* ; Diagnosis ; Electroencephalography ; Frontal Lobe ; Humans ; Magnetic Resonance Imaging* ; Seizures*

The computed tomography (CT) number is closely related to hematocrit level according to many of the previous reports. We measured the CT number in various organs, such as the frontal white matter, basal ganglia, occipital white matter, cerebrospinal fluid, liver, abdominal aorta, spleen, kidney, and psoas muscle. We correlated the CT numbers of the organs with hematocrit levels which were graded into 10% increments (20.0-29.9%, 30.0-39.9%, 40.0-49.9%). Thus the change of CT numbers in various organs according to the hematocrit level was analyzed. The increased CT numbers according to the 10% increment of hematocrit in the frontal white matter, basal ganglia, occipital white matter, liver, abdominal aorta, spleen, and psoas muscle were 1.3, 1.5, 1.6, 3.3, 5.3, 3.8, 2.4 respectively. Even though the CT numbers of the cerebrospinal fluid and kidney were not influenced by hematocrit level the CT numbers in most of the there organs postitively correlated with hematocrit level. Therefore, it was concluded that in the differential diagnosis using CT numbers, the hematocrit level of patient must be taken into consideration.
Aorta, Abdominal ; Basal Ganglia ; Cerebrospinal Fluid ; Diagnosis, Differential ; Hematocrit* ; Humans ; Kidney ; Liver ; Psoas Muscles ; Spleen ; White Matter

No abstract available.
Child* ; Humans ; Pneumonia, Staphylococcal* ; Thorax*

The vein of Galen malformation is a rare midline intracranial arteriovenous malformation. The majority of themalformations were seen in neonate, infancy and childhood, and the clinical symptoms and prognosis depended on ageof presentation. The authors report a case of the vein of Galen malformation in 17 month-old female withhydrocephalus, which is confirmed by CT and digital subtraction angiography.
Angiography, Digital Subtraction ; Cerebral Veins ; Female ; Humans ; Infant, Newborn ; Intracranial Arteriovenous Malformations ; Prognosis ; Veins

Stress fracture of the metatarsal was first described as March fracture by Breithaupt, a Prussian military surgeon in 1855, According to the classical references, the second metatarsal is the most frequently involved and radiological evidence of fracture appears as late as several weeks. The purpose of this study is to document the incidence and clinical feature of march fractures in Korean military soldiers. From may 1991 to April 1994, at one military hospital in Korea, 52 march fractures in 46 patients were detected among infantry soldiers. There are different findings of fracture site and its clinical features from the previous foreign reports. 1. By physical examination, direct point tenderness on the location of the metatarsal shaft is characteristic, with careful history taking. 2. On roentgenographic examination, cortical fissuring or break is seen one week after onset of symptoms and external callus is seen from two weeks or at the latest four weeks. 3. The third metatarsal is the most frequently involved site(34 cases, 65.4%), and the second metatarsal is less frequent(12 cases, 23.1%) 4. The discrepancy between previous reports and present findings should be emphasized and analyzed in further study.
Bony Callus ; Fractures, Stress ; Hospitals, Military ; Humans ; Incidence ; Korea ; Metatarsal Bones ; Military Personnel ; Physical Examination

PURPOSE: This study was performed to evaluate differentiating features of spinal compression fractures between benign and metastatic lesions. MATERIALS AND METHODS: We reviewed MR imaging in 52 patients (benign 38, metastasis 14) with vertebral compression fracture. Signal intensity of fracture and uninvolved areas, presence of contrast enhancement, fragmentation, and paravertebral mass were analyzed retrospectively. RESULTS: Signal intensity of fracture site was variable in benign lesions, but low signal intensity on T1-weighted image and high on T2*-weighted image were seen in all cases of metastasis. Signal intensity of uninvolved area was high on T1-weighted image and low on T2*-weighted image in 84% of benign lesions. On the contrary, normal marrow signal intensity was not seen in the uninvolved areas of all metastatic fractures. Contrast enhancement were observed in all cases of benign & metastatic compression fractures. Fragmentation were seen in 1 case of metastasis(7%) and in 11 cases of benign lesions(29%). Paravertebral mass were seen in 5 cases of metastasis(36%) and in 7 cases of benign lesions(18%). CONCLUSION: Presence of normal marrow signal intensity in the uninvolved area of fracture site could be the most useful sign for differentiating benign causes from metastasis.
Bone Marrow ; Fractures, Compression* ; Humans ; Magnetic Resonance Imaging* ; Neoplasm Metastasis* ; Retrospective Studies

No abstract available.
Athletes* ; Forearm* ; Humans ; Magnetic Resonance Spectroscopy* ; Metabolism* ; Phosphorus*