No abstract available.
Electrodes* ; Humans* ; Needles*

No abstract available.

No abstract available.

No abstract available.
Ultrasonography*

A lipomatous tumor originating in the uterus is a rare benign neoplasm, and most reported cases have been of the mixed type. Authenticated cases of pure lipomas of the uterus are extremely rare. We report one such case in which the findings of magnetic resonance imaging provided the basis for preoperative diagnosis.
Diagnosis ; Lipoma* ; Magnetic Resonance Imaging ; Uterine Neoplasms ; Uterus

No abstract available.
Asia* ; Paraplegia*

Chronic progressive radiation myelopathy(CPRM) is a rare but serious complication of radiation therapy. It's exact cause is unknown and the diagnosis is usually made based on the exclusion of other causes of myelopathy. Magnetic resonance imaging(MRI) with gadolinium- diethylenetriamine pentaacetic acid(DTPA) enhancement seems to be useful for the diagnosis of CPRM. There is no known effective treatment and the complication is irreversible. We report a case of CPRM after radiation therapy for subglottic cancer which was not respond to high-dose steroid therapy with review of literature.
Diagnosis ; Spinal Cord Diseases*

Recently, botulinum toxin has been widely used for the management of spasticity. However it's mechanism of action in the skeletal muscle has not been well clarified. This study was performed to investigate the histopathologic changes in the skeletal muscle after botulinum toxin injection, and to determine the clinical standards of muscle fiber conduction study as an objective indicator for the changes of muscle fiber. As a study group, 35 Sprague Dawley rats were injected intra-muscularly with the botulinum toxin type A around two heads of right gastrocnemius muscle. After the injection of botulinum toxin, histopathologic studies and muscle fiber conduction studies were performed in 5 rats of the study group at 0, 1, 3, 5, 7, 14, and 28th day respectively. Based on the morphologic studies, the mechanisms of paralysis following the botulinum toxin injection were found to be both myogenic and neurogenic, and the motor function recovered through the formation of new motor end-plate and proliferation of Schwann cells. The muscle fiber conduction study revealed that the mean latencies of study group at 1, 3, 5, 7, and 14th day after the injection of botulinum toxin were significantly prolonged than those of the control group(p<0.05). The prolongation and slow recovery of latencies in a muscle fiber conduction study after the injection of botulinum toxin significantly reflect the morphologic changes of paralized skeletal muscles.
Animals ; Botulinum Toxins* ; Botulinum Toxins, Type A ; Head ; Motor Endplate ; Muscle Spasticity ; Muscle, Skeletal ; Paralysis ; Rats* ; Rats, Sprague-Dawley ; Schwann Cells

PURPOSE: To assess changes in MR signal intensity in the pars interarticularis and adjacent structures in pa-tients with lumbar spondylolysis. MATERIALS AND METHODS: The MR images of 36 patients with lumbar spondylolysis, confirmed by plain radiographs, were retrospectively analyzed. Using a 1.0T unit, we evaluated the signal intensity of a total of 216 parts interarticulares and adjacent structures from L3 to L5, as seen on sagittal images, and differences between areas with and without spondylolysis. The signal intensity of T1-and T2-weighted images was graded 0 (more hypointense than spinal body), 1(as isointense as spinal body), 2(more hyperintense than spinal body and more hypointense than epidural fat), or 3(as isointense as epidural fat). Signal intensity change in end-plates and degree of spondylolisthesis were analyzed, and the relationship between these factors was deter-mined. RESULTS: Spondylolysis was noted at L5 in 61 cases, at L4 in 22, and of L3 in no case. In three cases spondylolysis was unilateral, and in the remainder it was bilateral. The degree of signal intensity was the same on T1- and T2-weighted images, and no case was grade 0. Eighty-six of 133 areas without spondylolysis were grade 1, 43 were grade 2, and four were grade 3. In 42 of 47 cases, signal intensity change was localized at pedicles. Among 83 areas with spondylolysis, on the other hand, nine were grade 1, 48 were grade 2, and 26 were grade 3. Signal intensity change was most commonly observed at the pars interarticularis, pedicle, and lamina (50/74) (p<0.001). Signal intensity change at the pars interarticularis and adjacent structures was accompanied in most cases by degenerative endplate change(10/11) and spondylolisthesis(11/13) (p<0.001). CONCLUSION: In patients with spondylolysis, signal intensity was frequently higher at the pars interarticularis and adjacent structures, and is thought to have a close relationship with degenerative endplate change and spondylolisthesis. Increases in signal intensity at the pars interarticularis and adjacent structures can help diagnose spondylolysis in patients without spondylolisthesis.
Hand ; Humans ; Magnetic Resonance Imaging* ; Retrospective Studies ; Spondylolisthesis ; Spondylolysis*

A 45-year-old man with a long history of nephrotic syndrome presented with low back pain and progressive weakness of both legs for one day. Physical examination showed an acutely ill-appearing patient with a loss of both femoral artery pulses. Immediate digital subtraction angiography of abdominal aorta revealed total occlusion of the distal abdominal aorta. Transvascular embolectomy using urokinase was undertaken 6 hours later. Digital subtraction angiography after embolectomy revealed both common ilicac arteries to be patent with good distal flow. Electrodiagnostic examinations (post embolectomy 5th and 45th day) revealed peripheral polyneuropathy of both lower extremity. Anticoagulation therapy was continued and the patient was discharged several months later. During this period, there was improvement in both lower limbs from power of grade 1 to 4 except for both ankle dorsiflexors which had not recovered. We report a rare case of peripheral ischemic polyneuropathy of both lower extremities as the result of acute abdominal aortic occlusion.
Angiography, Digital Subtraction ; Ankle ; Aorta, Abdominal ; Arteries ; Embolectomy ; Femoral Artery ; Humans ; Leg ; Low Back Pain ; Lower Extremity ; Middle Aged ; Nephrotic Syndrome ; Physical Examination ; Polyneuropathies* ; Urokinase-Type Plasminogen Activator