PURPOSE: This study was attempted to investigate the prevalence of the expression of c-fos protein, TGF-alpha and -beta, PCNA , DNA ploidy pattern and histopathological parameters of giant cell tumor (GCT) of bone and to correlate with prognosis and to extend our understanding on tumorigenesis of GCT. MATERIALS AND METHODS: Twenty eight cases of paraffin-embedded tissue were studied, classified as recurrent (5 cases) and non-recurrent group (12cases) within the limits of the cases which afforded surgical material on first operation. RESULTS: No significant difference was observed in cellularity of stromal cells, atypia of stromal and giant cells, presence of hemorrhage and necrosis between recurrent and non-recurrent group. However, presence of more than 10 mitotic figures in 10 high power fields in recurrent group was significantly higher than non-recurrent group (p<0.05). The immunoreactivity for PCNA was seen only in nuclei of stromal cells, whereas nuclei of giant cells showed negative staining. The positivity of PCNA revealed no significant difference between non-recurrent (mean; 40.9%) and recurrent group (34.4%). The expression of c-fos oncogene was seen in 5 cases (100%) in recurrent group, and 8 cases (66.7%) in non-recurrent group, and no significant difference was seen. No significant difference of expression of TGF-alpha was seen in 5 cases (100%) in recurrent group and in 11 cases (91.7%) in non-recurrent group. The expression of TGF-beta in stromal cells was significantly higher in non-recurrent group (80%) compared to recurrent group (100%) (p<0.05). In DNA analysis out of 18 cases, 4 cases (22.2%) were aneuploidy and 14 cases (77.8%) were diploidy. Among 4 aneuploidy cases, 3 cases (75%) had no recurrence, and 1 case (25%) had metastasis to lung and expired. No significant difference of DNA ploidy pattern was seen between the recurrent and non-recurrent group. CONCLUSION: Presence of more than 10 mitotic figures in 10 high power fields and less expression of TGF-beta are related to higher possibility of recurrence and it is suggested that the number of mitotic figure (more than 10/10HPF) and expression of TGF-beta could be helpful parameters in predicting recurrence of GCT.
Aneuploidy ; Carcinogenesis ; Diploidy ; DNA* ; Giant Cell Tumor of Bone* ; Giant Cell Tumors* ; Giant Cells* ; Hemorrhage ; Lung ; Necrosis ; Negative Staining ; Neoplasm Metastasis ; Oncogenes ; Ploidies ; Prevalence ; Prognosis ; Proliferating Cell Nuclear Antigen* ; Recurrence ; Stromal Cells ; Transforming Growth Factor alpha ; Transforming Growth Factor beta ; Transforming Growth Factors*

No abstract available.
Liver* ; Neoplasm Metastasis*

No abstract available.
Pre-Eclampsia* ; Toxemia*

No abstract available.
Paget's Disease, Mammary*

No abstract available.
Postpartum Period* ; Pregnancy*

The result of artificial skins made with collagen is poor after grafting over the full thickness wounds due to their rapid degradation by enzymatic cleavage. This study is an in vivo study of an artificial skin made with a biodegradable polymer, which can better address the problem of the collagenous artificial dermis. To investigate the availability of a biodegradable polymer for an artificial dermis and to get an information about the optimal degradation rate of a polymer for an artificial dermis, we made an artificial dermis by seeding of fibroblasts within the vicryl mesh and made a bilayer artificial skin by covering the artificial dermis with cultured keratinocytes. And these artificial dermis and artificial skin were evaluated in a full thickness wound model. The results are as followings: 1. The artificial dermis was available for grafting for 1 week culture of vicryl mesh-fibroblast. 2. The artificial dermis retarded the contraction of full thickness wounds. 3. The artificial dermis generated the granulation tissue and accepted the STSG completely. 4. The generated tissue from the artificial dermis had incorporated into the surrounding tissue by 4 weeks postgrafting. 5. Vicryl in the artificial dermis became to biodegrade from the culture period and absorbed completely by 5 weeks. 6. The epidermal portion was poorly differntiated during in vitro culture period. In conclusion, the polymer-fibroblast graft can retard the wound contraction and generate a new tissue permitting a useful dermal replacement. And to get more optimal results, another polymer which has slower biodegradation rate than vicryl should be used for the artificial dermis and the epidermal portion should be differentiated after in vivo grafting.
Collagen ; Dermis* ; Fibroblasts ; Granulation Tissue ; Keratinocytes ; Polyglactin 910 ; Polymers ; Skin, Artificial ; Transplants ; Wounds and Injuries

Medical school admission policies vary from country to country. In Korea, medical school admission policies reflect the policy choices made by the Ministry of Education. After the Korean War, universities implemented their own entrance exams, and since then, various admissions processes have been implemented with consideration of the fairness of the exam and the increase in private education expenses. The introduction of the medical graduate school system has led many universities to implement tests separate from the academic ability test. Currently, 40 medical schools have been approved by the government and are responsible for providing medical education, but there is a growing movement to open new medical schools in various regions. The excessive interest in medical school admissions in Korea is creating an unfavorable social atmosphere, where academies are even being operated for elementary school students to help them achieve an eventual goal of entering medical school. Furthermore, an irresponsible and sudden increase in the number of students admitted to medical school is causing a disruption in medical education. Medical schools need unconditional government support to strengthen their role in the community and the nation, and policy consideration is needed to ensure that universities are as autonomous as possible.

PURPOSE: To compare the short-term effects of intravitreal versus posterior subtenon injection of triamcinolone acetonide for diabetic macular edema. METHODS: This is a prospective and interventional study. Sixty eyes of 60 patients who had diffuse diabetic macular edema were assigned to receive a single intravitreal injection (4 mg) or a single posterior subtenon injection (40 mg) of triamcinolone acetonide. The central retinal thickness was measured using optical coherent tomography before injection and at 1 and 3 months after injection. Visual acuity and intraocular pressure (IOP) were also measured. RESULTS: Both intravitreal and posterior subtenon injections of triamcinolone acetonide resulted in significant improvements in visual acuity at 1 month and 3 months after injection. Both groups resulted in a significant decrease in central macular thickness (CMT) at 1 month and 3 months post-injection. IOP in the intravitreal injection group was significantly higher than in the posterior subtenon injection group at 3 months after injection. CONCLUSIONS: The posterior subtenon injection of triamcinolone acetonide had a comparable effect to the intravitreal triamcinolone injection and showed a lower risk of elevated IOP. Posterior subtenon injection of triamcinolone acetonide may be a good alternative for the treatment of diffuse diabetic macular edema.
Vitreous Body ; Visual Acuity ; Triamcinolone Acetonide/*administration & dosage/therapeutic use ; Treatment Outcome ; Tomography, Optical Coherence ; Prospective Studies ; Orbit ; Middle Aged ; Male ; Macular Edema, Cystoid/*drug therapy/etiology/pathology ; Injections ; Humans ; Glucocorticoids/*administration & dosage/therapeutic use ; Fundus Oculi ; Follow-Up Studies ; Fluorescein Angiography ; Female ; Diabetic Retinopathy/*complications/pathology ; Aged

PURPOSE: Febrile convulsions are the most common form of childhood seizures, appearing between in children 3 months and 5 years of age and are predominantly of benign nature. Febrile convulsions occurring after 5 years of age might be estimated as epilepsy. Most data for these disorders are from mainly epilepsy populations and might not be relevant to these children, and the requirement of any specific treatment or workup is not yet established either. Thus we tried to obtain a unique perspective. METHODS: Clinical data for episodes of febrile convulsions were collected in Eulji hospital in Deajeon. These were obtained from anonymised copies of a standardised admission note, emergency, nursing, and intensive care unit notes and interviews with parents, medical, nursing, and paramedic staff. RESULTS: Finding of 259 episodes of febrile seizure in over 5 year olds. 121(46.7%) were confirmed epilepsy or afebrile seizure in under 5 year olds, 13(5.0%) were caused by infection, metabolic disorder, leukemia and so on, and 23(8.9%) had previous neurological defect. Lastly, 102(39.4%) were included to febrile convulsion in over 5 year olds. 28(27.5%) of the subjects had their initial febrile convulsions in children over 5 year olds while 74(72.5%) of the subjects were under 5 years of age. The male to female ratio of the seizure group was 2:1. In the duration and type of convulsions, generalized convulsions occurred predominantly within 15mins in both of them. 5(17.9%) of group A and 16(21.6%) of group B showed electroencephalogram abnormality. The most common causes of seizure were common colds. Most of the convulsions occurred less than 24hrs after fever but, there were no abnormal findings in lumbar puncture and brain MRI. CONCLUSION: Febrile seizure in over 5 year olds without organic problems has similar characteristics to febrile convulsion in under 5 year olds. In light of these findings, lumbar puncture and brain MRI do not require a routine checkup for the evaluation of febrile seizure in over 5 year olds. However, encephalography needs to be examined.
Allied Health Personnel ; Brain ; Child ; Coat Protein Complex I ; Common Cold ; Electroencephalography ; Emergencies ; Epilepsy ; Female ; Fever ; Humans ; Intensive Care Units ; Leukemia ; Light ; Male ; Parents ; Seizures ; Seizures, Febrile ; Spinal Puncture

Congenital biliary atresia is the commonest cause of prolonged obstructive jaundice in the neonatal period, and is due to the pathologic closure of a major portion or segment of the biliary tree. The neonate with prolonged obstructive jaundice poses a diagnostic dilemma that may be insoluble by routine clinical and laboratory studies. This applies particularly to the most common entities, neonatal hepatitis and biliary atresia. We esperienced one case of congenital biliary atresia associated with ectopic pancreatic tissue in 23 day-old female which was confirmed by autospy. Literature about congenital biliary atresia were reviewed.
Biliary Atresia* ; Biliary Tract ; Female ; Hepatitis ; Humans ; Infant, Newborn ; Jaundice, Obstructive