An experimental study on the vascular alternations of the kidney following biopsy procedure was carried out in 47 kidneys from 28 rabbits to clarify their nature and frequency by renal arteriography and microangiography together with histopathologic investigation. Renal arteriography and microangiography were perforemd immediately 2 days, 1 week, and 2 weeks after percutaneous biopsy and the findings were correlated with histological nature. The results are summerized as follows; 1. Important biopsy injuries verified by renal arteriography and microangiography were arterial spasm, perfusion defect, arteriovenous fistula, injury to vasa recta and renaltubules, intrarenal and extrarenal extravasation of contrast media, and arterial obstruction, in order of frequency. 2. Artierial spasm observed in majority of the cases were relieved during the period of 2 weeks. 3. Detectability of perfusion defect was 57% and 72% by angiography and microangiography, respectively, and this perfusion defect seemed to be mostly caused by renal infarction due to vascular injury, such as arteriovenousfistula, arterial obstruction and other vascular injuries. 4. Arteriovenous fistula was detected in 28% byangiography and 50% by microangiography. Many of the arteriovenous fistula appeared to be closed spontaneously within a week. Above findings suggest that renal biopsy procedure results in various degree of vascular injuries with their sequential modification, and that microangiography is assumed the most effective approach in analysisof biopsy injuries such as small arteriovenous fistula, perfusion defect, injury to vasa recta and renal tubules, overcoming the limitation of traditional angiography.
Angiography ; Arteriovenous Fistula ; Biopsy ; Extravasation of Diagnostic and Therapeutic Materials ; Infarction ; Kidney ; Perfusion ; Rabbits ; Spasm ; Vascular System Injuries

No abstract available.

No abstract available.
Hysterectomy* ; Lymph Node Excision* ; Lymph Nodes*

No abstract available.
Hysterectomy* ; Lymph Node Excision* ; Lymph Nodes*

The purpose of this study is to evaluate the results of bone graft or cement fill for tibial bone defect in total knee arthroplasty. 51 knee in 45 patients which had bone graft or cement fill for tibial bone defect of more than 1cm3 in total knee arthroplasty, between March, 1990 and July, 1994 at the department of Orthopedic Surgery in Hanyang University Hospital were followed for average 30 months. Bone grafts were performed in 33 knees and cement fills in 18 knees. The size of tibial defect was measured after removal of sclerotic and dense bone in the tibial plateau. The average size of tibial defect treated by bone graft was 4.9 cm3 in volume, 11 mm in height and the average size of tibial defects treated by cement fills was 1.5cm3 in volume, 6.8 mm in height. The results were as follows ; 1. In true A-P and lateral x-ray checked by fluoroscopic guide, trabecular union was seen in all 33 knees of bone grafts without collapse, loosening and bone resorption. In one of 18 knees of cement fill, radiolucent line was detected 2 mm in width between cement mantle and the adjacent tibial bone. In other 17 knees, radiolucent was seen 1 mm or less in width. 2. According to the system of Knee Society Score, average knee rating score was improved from 23.2 points preoperatively to 90 points postoperatively in bone graft cases, from 23.4 points preoperatively to 93.2 points postoperatively in cement fill cases. Average functional score was improved from 14.8 points preoperatively to 81.5 points postoperatively in bone graft cases, from 13.3 points preoperatively to 81.4 points postoperatively in cement fill cases. 3. Finally, we obtained the good results by cement fill during cement fixation of tibial component or bone graft without cement fixation of tibial component for small tibial bone defect and by bone graft for large tibial bone defect.
Arthroplasty, Replacement, Knee ; Bone Resorption ; Humans ; Knee ; Orthopedics ; Transplants

The advent of computerized cranial tomography made a greater advance in the diagnosis of very wide variety of intracranial lesions. Authors analyzed 58 pathologically proven sellar and parasellar tumors examined at Kyung Hee Un-iversity Hospital from Oct. 1977 to Jun. 1981 and the results were as follows; 1. The distribution of the tumors is 28 pituitary adenomas, 18 craniopharyngiomas, 5 meningiomas, 4 germinomas, 2 astrocytomas, and 1 sphenoid mucocele. 2. In pituitary adenoma, the precontrast CT scan of tumors appeared as isodensity in 11 cases, mixed density in 8 cases, high density in 6 cases, and low density in 3 cases, and associated with destruction of sellar turcica in 15 cases, calcification in 3 cases, and hydrocephalus in 2 cases. The postcontrast CT scan study revealed 24 cases of contrast enhancement, including 17 cases of homogenous and 7 cases of ring or rim enhancement. 3. In craniopharyngioma, the precontrast CT scan of tumors appeared as low density in 12 cases, isodensity in 4 cases and high density in 2 cases and associated with calcification in 16 cases, hydrocephalus in 15 cases and destruction of sellar turcica in 2 cases. The postcontrast CT scan study revealed no enhancement in 10 cases and contrast enhancement in 8 cases including 6 of ring enhancement and 2 heterogenous enhancement.
Astrocytoma ; Craniopharyngioma ; Diagnosis ; Germinoma ; Hydrocephalus ; Meningioma ; Mucocele ; Pituitary Neoplasms ; Tomography, X-Ray Computed

STUDY DESIGNS: A retrospective study. OBJECTIVES: To analyze the clinical and radiological outcomes of spontaneous reduction via minimally invasive transforaminal lumbar interbody fusion (Mini-TLIF) as the treatment for low-grade symptomatic spondylolisthesis. SUMMARY OF LITERATURE REVIEW: Although minimally invasive transforaminal lumbar interbody fusion is technically demanding, this procedure is an effective method for spontaneous reduction of low grade spondylolisthesis. MATERIALS AND METHODS: We analyzed consecutive series of 41 patients with low grade spondylolisthesis who underwent minimally invasive transforaminal lumbar interbody fusion, between April 2008 and July 2009. The minimum follow-up period was 2 years. Clinical evaluation was performed by an analysis of Visual Analogue Scale and Oswestry Disability Index. For the radiological evaluation, disc space height, slip percentage, and slip angle were analyzed. At the final follow-up, the fusion rate was analyzed according to the Bridwell's anterior fusion grade. RESULTS: For the evaluation of clinical outcomes, the Visual Analogue Scale for back pain decreased from 6.8+/-1.2 to 2.0+/-1.1, and that for radiating pain decreased from 7.9+/-1.3 to 1.7+/-1.1. Oswetry Disability Index decreased from 38.5+/-8.4 to 13.4+/-6.1. For the radiological evaluation, disc space height increased from 8.4+/-2.14mm to 11.8+/-1.54mm(P<0.05), slip percentage was reduced from 18.4+/-5.1% to 13.3+/-3.1%(P<0.05) and slip angle decreased from 10.6+/-4.5degrees to 6.2+/-3.4degrees (P<0.05). At the final follow-up, radiological union was obtained in 38 cases (92.7%). CONCLUSIONS: We conclude that minimally invasive transforaminal lumbar interbody fusion appears to be an effective method for spontaneous reduction of low grade spondylolisthesis if the surgeon becomes familiar with this method.
Back Pain ; Follow-Up Studies ; Humans ; Retrospective Studies ; Spondylolisthesis

No abstract available.
Salivary Glands*

BACKGROUND: Epstein-Barr virus(EBV)-specific Ab ELISA using recombinant antigens is the most widely used method in the diagnosis of EBV infection. Recently sensitivity and specificity were greatly improved. But still the early antigen(EA)-IgM is too sensitive for discriminating the true EBV infection from secondary reactivation by other infectious agents or autoimmune diseases. So we compared EBV-specific panel test with PCR genotyping. METHODS: We studied 944 patients in Yonsei University Medical College Hospital who were suspected to have EBV infection. EBV-specific Ab panel test including EA-IgM, EA-IgG, EBNA-IgG was performed and EBV PCR was also performed in 151 randomly selected patients. The test results were classified into 9 stages by optical density. EBNA 2 region was amplified by PCR using DNAs isolated from peripheral blood mononuclear cells. RESULTS: The seronegative rate was 9.9% given the EBV Ab panel results. Seronegative/primary infection was high in the pediatric group, past infection was high in the adult group, and reactivation was high in the ICU/transplanted group. The overall positive rate of EBV PCR in 151 patients was 35.8%, of which type 1 genotype was 55.6%, type 2 was 20.4%, and coinfection of type 1 and 2 was 24.1%. PCR results were all negative in seronegative group. PCR positive rates of primary infection and reactivation were high(41.7%, 43.5%, respectively). CONCLUSIONS: EBV Ab panel and EBV PCR showed good correlation. EBV panel test was useful in the screening and staging of EBV infection. EBV PCR genotyping was also needed in confirming and determining prognosis of EBV infection especially in an immunocompromised host.
Adult ; Autoimmune Diseases ; Coinfection ; Diagnosis* ; DNA ; Enzyme-Linked Immunosorbent Assay ; Epidemiology ; Epstein-Barr Virus Infections ; Genotype ; Herpesvirus 4, Human* ; Humans ; Immunocompromised Host ; Mass Screening ; Polymerase Chain Reaction* ; Prognosis ; Sensitivity and Specificity

No abstract available.
Amputation* ; Replantation*