The authors studied the early morphologic changes of peripheral nerve, which is known as relatively radioresistant tissue to the X-ray irradiation, but recently clamied by several clinician through development of neuropathies after radiotherapy of the malignacy. Rabbits were received 1,000 or 2,000 cGy of X-ray on the knee joint areas. Sciatic nerves were extracted out 30 minutes, 1, 2, 4, 24 hours, and 3 and 7 days after irradiation. The morphologic changes were observed by light and electron microscopes. The results were summarized as follows: Light microscopically, only mild edema is noted. Electron microscopically, irregular separation and folding of myelin sheath with spherical body formation are noted. Above features were more prominent at later stages and aggregated nests of fragmented myelin were scattered 16 hours after irradiation. Schwann cell necrosis is noted after 24 hours. But above degenerative changes were scarcely present 7 days after irradiation. There is no remarkable axonal changes. The interstitial tissue revealed swelling and irregularity of surface of endothelial cells, and edema. On the basis of the results, it may be concluded that the peripheral nerve is injured by irradiation in early stages, and the main target of irradiation injury is thought to be myelin sheath and Schwann cells, which would be reversible and could be recovered promptly.
Rabbits ; Animals

No abstract available.
Female ; Pregnancy ; Pregnancy, Multiple*

Renal leiomyoma, a rare benign tumor, is a challenging diagnostic and therapeutic condition. The preoperative diagnosis of renal leiomyoma is very difficult, and the only definite method to distinguish between a leiomyoma and other renal tumor is postoperative microscopic evaluation. We report a case of leiomyoma of the kidney which was managed by radical nephrectomy under the impression of malignant renal mass which was incidentally found by ultrasonographic examination for health check in a 43-year-old woman.
Adult ; Diagnosis ; Female ; Humans ; Kidney* ; Leiomyoma* ; Nephrectomy

No abstract available.
Lymphangioma, Cystic*

BACKGROUND: The nature of operation alters the volume of distribution at steady state (Vdss) of drug. The hepatic extraction ratio of midazolam (0.3~0.7) could be influenced by hepatic blood flow (HBF), and hepatic enzyme activity. The pharmacokinetics of intravenous midazolam were determined in patients undergoing lung surgery. METHODS: Midazolam, 0.2 mg/kg, was administered to five patients undergoing lung surgery at 30 minutes after induction of anesthesia. Anesthesia was maintained with O2-enflurane for one lung ventilation. Blood samples from artery were drawn at increasing intervals for 12 h. Plasma midazolam concentrations were measured by gas chromatography. Computer simulations of the times required for 20%, 50%, and 80% decreases in midazolam concentrations were performed. RESULTS: A three compartment model best described the concentration versus time data. The volume of the central compartment (Vc) and volume of distribution at steady state (Vdss) were 4.3 2.8 l and 59.9 20.1 l, respectively. The elimination half-life was 3.4 2.2 h. Simulations indicate that under all the situations, the concentrations would decrease more rapidly in our patients in spite of similar Vdss and elimination half-life of patients undergoing minor gynecological surgery. CONCLUSION: The elimination half-life was in the range of previously reported values. The shorter recovery time is apparently due to relatively faster redistrubution, and relatively greater capacity for redistribution.
Anesthesia ; Arteries ; Chromatography, Gas ; Computer Simulation ; Female ; Gynecologic Surgical Procedures ; Half-Life ; Humans ; Lung* ; Midazolam* ; One-Lung Ventilation ; Pharmacokinetics* ; Plasma

No abstract available.
Aorta, Thoracic* ; Blood Flow Velocity* ; Female ; Hypertension, Pregnancy-Induced* ; Pregnancy ; Umbilical Arteries*

This 22-year-old female patient has had a lozenge shaped hair tuft with terminal hair on the lumbosacral area since birth. A limping gait due to discrepancy of the length of the lower extremities has also been noted since 5 year age. Subsequently multiple, recurrent trophic ulceration developed on the left foot because of sensory loss. Simple cervico-lumbar spine x-ray showed spina bifida occulta of L-2 to sacrum. Lumbar myelography revealed widened vertebral canal without other spinal anomaliea.
Female ; Foot ; Gait ; Hair ; Humans ; Lower Extremity ; Myelography ; Nevus* ; Parturition ; Sacrum ; Spina Bifida Occulta* ; Spinal Dysraphism* ; Spine ; Ulcer ; Young Adult

We report a case of staphylococcal septicemia with skin lesions characteristic of septic emboli in a 55-year-old man. Examination of the skin revealed small pustules surrounded by wide ring of erythema on the trunk and extremities. Histopathologic examination of a pustule showed subcorneal pustule and Gram positive septic emboli within blood vessels. There were neutrophilic infiltration and numerous extravasated erythrocytes within dermis. Staphylococcus aureus was isolated on the bacterial culture of blood and small pustules, He was treated with cloxacillin, but died due to respiratory distress syndrome.
Blood Vessels ; Cloxacillin ; Dermis ; Erythema ; Erythrocytes ; Extremities ; Humans ; Middle Aged ; Neutrophils ; Sepsis* ; Skin* ; Staphylococcus aureus

No abstract available.
Sinusitis*

The importance of tick-borne diseases is increasing because of climate change, with a lack of long-term studies on tick-borne pathogens in South Korea. To understand the epidemiological characteristics of tick-borne diseases, the monthly distribution of field ticks throughout the year was studied in South Korea between May 2014 and April 2018 in a cross sectional study.