PURPOSE: Obesity is a significant health problem with medical and psychological consequences for children and adolescents. The purpose of this study was to assess the correlation between body fat percent using bioelectrical impedance(BI) and other variable methods. METHODS: We measured height, weight, body mass index(BMI) and body fat percent by skinfold thickness(ST) and BI in 1,035(496 male; 539 female) children from seven to 18 years of age. The correlation coefficients between BI and each of the other different methods were obtained. The sensitivity and specificity to predict obesity by these several methods were studied. RESULTS: Fat percent estimated by BI analysis and BMI showed a strong correlation(r=0.749). Fat percent estimated by BI analysis and ST showed a very strong correlation(r=0.835). At the 95th percentile cut-off point for BI, ST showed a sensitivity of 57.7%, and a specificity of 97.6% for estimating body fat. At the 95th percentile cut-off point for BI, BMI showed a sensitivity of 84.9%, and a specificity of 99.3% for estimating body fat. CONCLUSION: The fat percent estimated by BI analysis correlated strongly with ST or BMI. BI analysis is an objective and accurate method for estimating body fat in childhood obesity.
Adipose Tissue* ; Adolescent ; Body Mass Index ; Body Weight ; Child ; Electric Impedance* ; Humans ; Male ; Obesity ; Pediatric Obesity ; Sensitivity and Specificity ; Skinfold Thickness

Maffuccis syndrome was first reported by Maffucci, in 1881. This syndrome is manifested by multiple enchondromas and hemangiomas, characterized by non-hereditary mesenchymal neoplasia that has a propensity for malignant transformation. Involvement of long bones, particularly the bones of the hands and feet, is most common. The most important complication of this syndrome is the high frequency of chondr osarcomatous metaplasia. We report a case of Maffuccis syndrome in a 56-year-old woman with multiple hemangioma on both the hands and forearms, left foot and enchondromas of multiple bones. The disease started at the age of 8 and was associated with deformity, but malignant transformation was not found.
Chondroma ; Congenital Abnormalities ; Enchondromatosis ; Female ; Foot ; Forearm ; Hand ; Hemangioma ; Humans ; Metaplasia ; Middle Aged

Dermatofibrosarcoma protuberans is an uncommon, locally aggressive fibroblastic tumor, characterized by infrequent metastasis and a marked tendency of local recurrence after excision. Histologically, it shows large uniformed spindle shaped cells arranged in a cartwheel or storiform pattern. We report a case of dermatoribrosarcoma protuberans on the lower abdomen of a man aged of thirty, treated with Mohs micrographic surgery and purse-string suture repair.
Abdomen ; Dermatofibrosarcoma* ; Fibroblasts ; Mohs Surgery* ; Neoplasm Metastasis ; Recurrence ; Sutures*

From January to December of 1990, we have evaluated VDRL reactivity among 17,142 apparently normal Korean adults which consisted of 9,151 blood donors in Seoul area, 2,682 pregnant woman delivered at Severance Hospital, Yonsei University and 5,309 physical examinees. The VDRL-positive rates were 0.3% in the blood donors, 0.1% in the pregnant women and 0.8% in the physical examinees but the rates were higher in the age group of 50 years or older. The VDRL titers were below 1:2 in 94% of the VDRL-positive pregnant women and physical examinees. From the comparison of the results obtained by the present author group since 1977, i.e., 2.5 % in 1977, 1.1 % in 1981, 0.6 % in 1986 and 0.4 % in 1990, it is evident that the prevalence of syphilis in Korea is continually decreasing.
Adult ; Blood Donors ; Female ; Humans ; Korea ; Pregnant Women ; Prevalence* ; Seoul ; Syphilis*

No abstract available.
Drug Therapy, Combination* ; Humans ; Leukemia, Myeloid, Acute*

Langerhans sell bistiocytosis(LCH) is a reactive disease in which abnomal Langerhans cells accurnulate in various body sites and cause damage to affected organs. LCH usually occurs in childrea bur can also affect adults although rarely. LCH in a case of 65-year-old man initially involwed the lymph nodes (left supraclacicular and right inguinal area) and pelvis bone, and eight months later curancous involvement was noted. The skin lesions were waxy from the waxy papules showed that the dense infiltrate, ptedominantly of histiocytes, was present in the dermis, Immunohistochemistry for S-100 protein showed positive staining snd electron miscoroscopy disclosed Birbeck granules, which is characteristic findings of Langerhans cells.
Adult* ; Aged ; Dermis ; Histiocytes ; Histiocytosis, Langerhans-Cell* ; Humans ; Immunohistochemistry ; Langerhans Cells ; Lymph Nodes ; Pelvis ; S100 Proteins ; Skin

Linear focal elastosis was first described by Burket et al. in 1989 in three elderly men with palpable striae-like yellow bands on their backs. Microscopic examination revealed many fine wavy bundles of elastic fibers separating the collagen in the mid to reticular dermis. The patients' ages range a from 17 to 87 years but this disease seems to be more common in younger age; men are more commonly affected. The cause of this disease has been suggested to be hereditary predisposition, unusual form of striae distensae or keloidal repair of striae distensae. We report linear focal elatosis with typical clinical and pathological features in a 15-year-old boy.
Adolescent ; Aged ; Collagen ; Dermis ; Elastic Tissue ; Humans ; Keloid ; Male ; Striae Distensae

No abstract available.
Pelger-Huet Anomaly*

STUDY DESIGN: This study analyzes the results of selective thoracic fusion by segmental pedicle screw fixation in King type II adolescent idiopathic scoliosis(AIS). OBJECTIVES: To verify the efficacy of selective thoracic fusion by segmental pedicle screw fixation in King type II adolescent idiopathic scoliosis. SUMMARY OF BACKGROUND DATA: Decompensations following selective thoracic fusion in King type II adolescent idipathic scoliosis have been attributed to relative inability of the lumbar curves to accommodate correction of the thoracic curves. However, with segmental pedicle screw fixation, selective thoracic fusions yielded satisfactory results in most of the patients regardless of the lumbar curve characteristics. MATERIALS AND METHODS: Eighty patients subjected to selective thoracic fusion by segmental pedicle screw fixation were analyzed after a minimum follow-up of 2 years for deformity correction and spinal balance. Deformity correction was performed by derotation of rod contoured to the normal sagittal curve without additional compression or distraction. RESULTS: Mean preoperative thoracic curve of 53.3 was corrected to 20.3 showing a correction of 63.2%. The mean preoperative lumbar curve was 34.4 with a flexibility of 97.2% and mean lumboapical distance(LAD)of 18.0mm, L4 tilt of 8.0, and lumbar apical rotation (LAR) of 10.9. It was corrected to 16.5 showing a correction of 55.5%. All the patients were balanced clinically and radiologically. CONCLUSIONS: Selective thoracic fusion with segmental pedicle screw fixation and rod rotation offers a satisfactory correction of the deformity and maintenance of spinal balance in King type g AIS regardless of lumbar curve magnitude, LAD, L4 tilt or LAR.
Adolescent* ; Congenital Abnormalities ; Follow-Up Studies ; Humans ; Pliability ; Scoliosis*

The employment of segmental pedicle screw instrumentation has greatly enhanced the correction of scoliotic deformity. However there is still much controversy on the ability of the system to correct the rotational deformity. This prospective study with 12 idiopathic throacic scoliosis patients subjected to segmental pedicle screw instrumentation was performed to determine the effect of the system on the rotational deformity of idiopathic throacic scoliosis. In addition to the standing films to measure the magnitude of scoliotic curvatures, preand postoperative CT were utilized for the measurement and comparison of angle of rotation relative to the sagittal plane(RAsag.), relative rotation with reference to the upper and lower end vertebrae(RAend), relative rotation with reference to the sacrum(RAsac.), frontal translation(TF) and sagittal translation(TS) for the apical vertebrae. Despite the high correction rate obtained in the frontal plane(average 71.1%) and normalization of sagittal contour, the rotational corrections were statistically insignificant in all parameters and showed no significant correlation to the correction of the curvatures nor horizontal plane displacement as represented by the frontal and sagittal displacement. In conclusions, the segmental pedicle screw instrumentation with rod derotation does not produce significant derotation by itself.
Congenital Abnormalities ; Employment ; Humans ; Prospective Studies ; Scoliosis* ; Spine