No abstract available.
Birds* ; Orientia tsutsugamushi* ; Rickettsia*

The variations of the sigmoid sinus were studied in 50 Korean adults (average age 67). The classification of the shape and a measurement of the diameters of the sinus were done and the morpological. 1. The shape was classified into 4 types, and the round type was the most common in both sides. S shaped type was below 10% in both sides. 2. The breadth was regular in 54% of the right and in 70% of the left sinuses. According to the breadth change, the shape was classified into 4 shapes. 3. The average diameter was 8.6mm on the right side and 7.2mm on the left side. 4. Symmetry was present in 16% of all. 5. The right transverse sinus was absent in 1 case (2%) and the superior petrosal sinus did not open into the sigmoid sinus in 2 cases (4%). 6. Petrosqamous sinus was observed in 16%.
Adult* ; Classification ; Colon, Sigmoid* ; Humans

BACKGROUND: Controversy exists as to whether or not inhalation anesthetics and intravenous anesthetics impair arterial oxygenation (PaO2) during one lung ventilation (OLV). Accordingly, we examined the effect of enflurane and propofol on PaO2 and pulmonary vascular resistance (PVR) during OLV. METHODS: Forty patients, who had prolonged periods of OLV anesthesia with minimal trauma to the nonventilated lung were studied in a cross over design. Patients were randomized to four groups; Group 1 received 1 MAC of enflurane and oxygen from induction until the first 20 min after complete lung collapse, then were switched to propofol 100 g/kg/min (P100). In group 2, the order of the anesthetics was reversed. Group 3, Group 4 received the same order of the anesthetics as Group 1, Group 2, respectively but received propofol 200 g/kg/min (P200). RESULTS: During OLV, the PaO2 values were lower than those with two lung ventilation (TLV), there were no significant differences among each groups and between propofol and enflurane in PaO2, but in the selected patients (n=10, PaO2<120 mmHg during OLV), PaO2 in propofol group was higher than that of enflurane group (p<0.05). Conversion from TLV to OLV caused a significant increase in PVR, but there were no difference in PVR between propofol and enflurane group. CONCLUSIONS: These results suggest that the usual clinical dose of propofol affords no advantage over 1 MAC of enflurane anesthesia except low PaO2 patients during OLV. Propofol might be of value in risk patients of hypoxemia during thoracic surgery when OLV is planned.
Anesthesia ; Anesthetics ; Anesthetics, Inhalation ; Anesthetics, Intravenous ; Anoxia ; Cross-Over Studies ; Enflurane* ; Humans ; Lung ; One-Lung Ventilation* ; Oxygen* ; Propofol* ; Pulmonary Atelectasis ; Thoracic Surgery ; Vascular Resistance ; Ventilation

To evaluate the role of MR in the examination of Legg-Calve-Perthes(LCP) disease, we retrospectively analysed the signal intensity of the osseous lesion, thickness of the articlar cartilage, change of surrounding soft tissue. Joint effusion and femoral head containment in 32 cases of LCP diseases in 27 patients. The bony lesion was limited witin the epiphysis in 19 cases(59%) and extended to the physis and metaphysis in 13 cases(41%). The epiphyseal lesion showed homogeneous(26/32) or heterogeneous(6/32) low signal intensity(ST) on T-1 weighted images(T1WI). And homogeneous (16/28) or heterogeneous(12/28)low SI on T-2 weighted images(T2WI). The metaphyseal lesion showed low SI(13/13) on T1WI, and low(9/11) or iso(3/11)SI on T2WI. Associated metaphyseal cyst showed low SI on T1WI and high SI on T2WI. An althought physeal involvement(13/32) was indistinct, the lesion showed increased SI on both T1 and T2WI. Thickening of articular cartilage(32/32), swelling f the ligamentum teres(7/32), synovial hypertrophy(7/32) and joint effsion(27/32) were demonstrated. Lateral subluxation of the femoral head on coronal image indicated incongruity of the femoral head in 25cases(78%) We conclude that MR is an useful tool for the diagnosis as well as treatment planning in LCP disease.
Cartilage ; Containment of Biohazards ; Diagnosis ; Epiphyses ; Head ; Humans ; Joints ; Legg-Calve-Perthes Disease* ; Retrospective Studies

Well differentiated osteosarcomas are variants of osteosarcoma composed mainly of fibrous and osseous tissue with minimal cystologic atypia. This tumor may be misinterpretated as a benign lesion if the radiologic and clinical features are not taken into account. We report a typical case of intraosseous well differentiated osteosarcoma occuring in the left distal femur of a 58-year-old woman. Radiologically, it appered as an ill-defined lesion with a mixture of sclerotic and osteolytic ares. But there was a lack of highly destructive appearance of conventional osteosarcoma. Grossly, the mass occupied a metaphysis of the distal femur with extension into the diaphysis and epiphysis. Multifocal cortical destruction and sclerosis were also associated. Histologically, the mass showed typical features of intraosseous well differentiated osteosarcoma. There were various patterns of osteoid deposits and bone formation mimicking those of fibrous dysplasia, nonossifying fibroma or parosteal osteosarcoma.
Female ; Humans

PURPOSE: This study was designed to evaluate the clinical charateristics, surgical treatment and outcome of carcinoid tumors of the rectum. METHODS: A retrospective review of the charts of all patients treated for rectal carcinoid tumors at Kangbuk Samsung Medical Center between Jan 1989 and April 1998. Thirteen patients with rectal carcinoids tumors were treated. Follow-up data, histopathological information and surgical procedures were obtained from case notes. RESULTS: There were 10 men and 3 women. The ages ranged from 28 to 60 years (mean 41.1 years for all, 43.8 years for men and 32 years for women). Eight patients (61.5%) had no symptoms. Of the five patients, four complained of rectal bleeding (30.8%), and one complained of defecational difficulty (7.7%). Size of rectal carcinoid tumor was less than 1 cm in 7 patients (53.8%), between 1 cm and 2 cm in 2 patients (15.4%), in four patients (30.8%) larger than 2 cm. Three patients were treated in Abdominoperineal resection. Two patients underwent stapled low anterior resection. The remaining 8 patients underwent conservative resection (3 colonoscopic polypectomy and electrocauterization, 2 colonoscopic snaring biopsy, 2 transanal resection and one Mason's operation). The depth of invasion was contained within sutmucosa in 3 patients. Liver metastasis was found in 2 patients. Average follow-up time was 35.6 months. Two patients died of mutiple mestastasis (liver, bone, peritoneum) 9 and 30months later. CONCLUSION: We concluded that tumors smaller than 1 cm could be managed by local treatment whereas larger than 2 cm should be managed by radical treatment.
Biopsy ; Carcinoid Tumor* ; Female ; Follow-Up Studies ; Hemorrhage ; Humans ; Liver ; Male ; Neoplasm Metastasis ; Rectum ; Retrospective Studies ; SNARE Proteins

We report here on a case of solitary fibrous tumor of the retroperitoneum, and the tumor displayed a predominantly myxoid histology. A 56-year-old man presented with an incidentally detected retroperitoneal mass. On the MR images, the mass was observed as having iso-signal intensity on the T1-weighted images and high signal intensity on the fat-saturated T2-weighted images. The mass showed intense enhancement on the Gd-DTPA enhanced T1-weighted images. At surgery, a well-defined solid mass was found in the left retroperitoneum. The histological diagnosis was made as solitary fibrous tumor with a predominantly myxoid histology.
Humans ; *Magnetic Resonance Imaging ; Male ; Middle Aged ; Retroperitoneal Neoplasms/*diagnosis/pathology ; Solitary Fibrous Tumors/*diagnosis/pathology

Postoperative recurrence is a major cause of mortality and morbidity for the patients suffering with colorectal cancer. Therefore, patients with colorectal cancer are routinely followed up with CT to detect the presence of locoregional recurrence and distant metastases. A central goal of postoperative surveillance for colorectal cancer is to improve survival through the earlier identification of tumor recurrence. Locoregional recurrence refers to tumor occurring at or adjacent to the surgical site and at the regional lymph nodes. It has been reported that metastatic spread based on the site of the primary tumor shows a relatively predictable pattern. Given the prevalence of colorectal cancer and the role of CT for postoperative surveillance, radiologists should be familiar with the CT findings of locoregional recurrence after curative resection for colorectal cancer.
Colorectal Neoplasms* ; Humans ; Lymph Nodes ; Mortality ; Neoplasm Metastasis ; Prevalence ; Recurrence*

STATEMENT OF PROBLEM: It has been proved that Pleurotus eryngii Quel and Eleutherococcus senticosus have antiinflammatory action and not only stimulates the proliferation and activity of osteoblast but inhibits the generation and activity of osteoclast in vitro. Pleurotus eryngii Quel and Eleutherococcus senticosus are the main component of OPB-K(R). PURPOSE: The purpose of this study was to evaluate OPB-K(R) which enhances the healing rate of peri-implant bone and the bone mineral density. MATERIALS AND METHODS: Thirty six specially designed implants were installed in the tibia of rats. The group medicated with OPB-K(R) was the experimental group, and that without was the control group. hen the implant stability was measured by Periotest(R). Bone mineral density and histological measurement were conducted at the 2nd, 4th and 6th week Periotest(R) and bone mineral density values were analyzed statistically with independent t-test at 95% confidence level(P<0.05). RESULTS: The results of this study were as follows : 1. There was no statistically significant difference in Periotest(R) values between the experimental group and control group at the 2nd week, however, on the 4th and 6th week there was significant difference(P<0.05). 2. There was no statistically significant difference in bone mineral density between the experimental group and control group at the 2nd and 4th week, however on the 6th week there was significant difference(P<0.05). 3. Histological analysis showed difference in osseointegration on the 4th and 6th week between the groups. CONCLUSION: From the results, it is concluded that the OPB-K(R) medicated group showed statistically better results in bone density and stability than the control group. Clinically it would be better to medicate OPB-K(R) to patients for a long period of time after implantation to get superior results.
Animals ; Bone Density ; Eleutherococcus ; Humans ; Osseointegration ; Osteoblasts ; Osteoclasts ; Pleurotus ; Rats ; Tibia

The nfa1 gene was cloned from a cDNA library of pathogenic Naegleria fowleri by immunoscreening; it consisted of 360 bp and produced a 13.1 kDa recombinant protein (rNfa1) that showed the pseudopodia-specific localization by immunocytochemistry in the previous study. Based on the idea that the pseudopodia-specific Nfa1 protein mentioned above seems to be involved in the pathogenicity of N. fowleri, we observed the effect of an anti-Nfa1 antibody on the proliferation of N. fowleri trophozoites and the cytotoxicity of N. fowleri trophozoites on the target cells. The proliferation of N. fowleri trophozoites was inhibited after being treated with an anti-Nfa1 polyclonal antibody in a dose-dependent manner for 48 hrs. By a light microscope, CHO cells co-cultured with N. fowleri trophozoites (group I) for 48 hrs showed severe morphological destruction. On the contrary, CHO cells co-cultured with N. fowleri trophozoites and anti-Nfa1 polyclonal antibody (1: 100 dilution) (group II) showed less destruction. In the LDH release assay results, group I showed 50.6% cytotoxicity, and group II showed 39.3%. Consequently, addition of an anti-Nfa1 polyclonal antibody produced a decreasing effect of in vitro cytotoxicity of N. fowleri in a dosedependent manner.
Animals ; Antibodies, Protozoan/*immunology ; Antigens, Protozoan/genetics/*immunology ; CHO Cells ; Dose-Response Relationship, Immunologic ; Female ; Hamsters ; Mice ; Mice, Inbred BALB C ; Naegleria fowleri/growth & development/immunology/*pathogenicity ; Protozoan Proteins/genetics/*immunology ; Recombinant Proteins/immunology ; Support, Non-U.S. Gov't