We investigated the effect of experimentally induced anisometropia on binocular function. Unilateral myopia, hyperopia, or astigmatism(Axis 90degrees) was induced in eighteen adults with normal binocular function using softcontact lenses. Sensory status was assessed by measuring stereoacuity, Worth four dot test, and Bagolini lens test. Binocular function of all subjects decreased with increasing levels of anisometropia. In Worth four dot test, foveal suppression increased in proportion to the levels of anisometropia. Stereoacuity was similarly degraded by the induced anisometropia. Bagolinilens responses were normal in almost all subjects. Our study suggest that experimentally induced anisometropia cause significant abnormalities in binocular function in adults.
Adult ; Anisometropia* ; Humans ; Hyperopia ; Myopia ; Telescopes* ; Vision, Binocular*

No abstract available.
Borrelia burgdorferi* ; Borrelia* ; Ixodes* ; Korea* ; Lyme Disease* ; Ticks*

BACKGROUND: Canine scabies is caused by an infestation of Sarcoptes scabiei var. canis (S. canis) in dogs and they can be transmitted to humans. Recently pet raising has been increasing in Korea and various parasitic infestations contracted from them have also been increasing including canine scabies. OBJECTIVE: The purpose of this study was to examine the clinical and histopathological features of experimental canine scabies. METHODS: Two dogs experimentally infested were observed for a year. They were examined physically and the numbers of S. cans were counted from scraping samples of the ear, leg and abdomen every 3 to 7 days and skin biopsies were taken. One was given systemic corticosteroids(Dogl) and the other was observed in its natural course(Dog2). RESULTS: Dogl-Clinically severely pruritic, markedly thick hyperkeratotic scales, crust and generalized erythema on the whole body developed with huge numbers(up to 754.9/100mg from scales of the abdomen) of mites, and histopathologically showed features similar to human crusted scabies. Dog2-Clinically showed milder features than Dogl including the number of S. canis(up to 242.6/100mg from scales of the ear), but histopathologically showed similar features with Dogl. Dog2 also showed a prompt response to one topical application of 20% benzyl benzoate solution. CONCLUSIONS: 1) The number of S. canis increased markedly in both normal and corticosteroidtreated dogs, although it was more significantly increased in the corticosteroid-treated one. 2) Histopathology showed features similar to classical scabies in the early stage but features of human crusted scabies in the full-blown stage. 3) Morphologically Sarcoptes canis differs from Sarcoptes scabiei var. hominis.
Abdomen ; Animals ; Benzoates ; Biopsy ; Dogs ; Ear ; Erythema ; Humans ; Korea ; Leg ; Mites ; Sarcoptes scabiei ; Scabies* ; Skin ; Weights and Measures

No abstract available.

A case of extrapulmonary silicosis involving abdominal lymph nodes in a 62-year-old man is presented. The patient underwent subtotal gastrectomy and regional lymph nodes dissection for gastric adenocarcinoma of clinical stage III. On gross examination, two separate gastric adenocarcinomas and multiple enlarged lymph nodes mimicking metastatic lesion were noted. Microscopic examination of the enlaged lymph nodes revealed characteristic sclerohyaline silicotic nodules without metastatic adenocarcinoma. Chest roentgenogram showed diffusely scattered multiple tiny nodular lesions in the entire lung fields, particularly the posterior side of both upper lung fields. He had worked in a mine for 18 years and had been exposed to silica for 5 of those years. We report incidentally found, unusual case of extrapulmonary silicosis.
Adenocarcinoma ; Gastrectomy ; Humans ; Lung ; Lymph Nodes ; Middle Aged ; Silicon Dioxide ; Silicosis* ; Thorax

OBJECTIVE: The authors evaluate the differences in the pedicle screw pull-out strength between an unaugmented screw and a screw augmented by high pressurized PMMA in an embalmed human lumbar cadaveric spine. METHODS: Pedicle screws were inserted in the 50 pedicles of cadaver lumbar spine after measuring the bone mineral density(BMD) of the specimens. The pedicle screw was inserted without augmentation on the left pedicle and with augmentation by a vertebral reconstruction with high pressurized PMMA on the right side. The pedicle screw was inserted before the hardening of bone cement on the right side. A computed tomographic scan was done to evaluate the location of the PMMA and PMMA/ screw interface. After that, a screw pullout strength test was performed. RESULTS: There were positive correlations between the pull-out strength and BMD in the control group (r=0.7339). The average pull-out strength of the augmented group was 168% greater than that of the control group(p<0.05). The pull-out strength of the augmented group was correlated with in the volume of the PMMA. CONCLUSION: A pedicle screw that is augmented with PMMA will provide a more rigid fixation than that of an unaugmented screw, especially in the low BMD group of the specimens.
Cadaver* ; Humans ; Polymethyl Methacrylate ; Spine

Adenosquamous carcinoma originating in the stomach is relatively rare, and the occurrence of such tumor is interesting with respect to its histogenesis. We describe three cases of gastric adenosquamous carcinoma in a 39-year-old man, a 58-year-old woman and a 52-year-old man. They were grossly classified as Borrmann type III or II, revealing no difference from usual advanced gastric adenocarcinomas. Microscopically three cases showed well or moderately differentiated squamous cell carcinoma component occupying large areas of the tumors. Areas of transition from glandular to squamous epithelium were frequently observed. Metastatic foci in the regional lymph nodes also were consisted of two elements. On immunohistochemical study, CEA immunoreactivity was found not only in adenocarcinoma component but also in squamous cell components, in comparison to cytokeratin which was detected only in squamous areas. The immunohistochemical findings of CEA reactivity in both components, and the presence of microscopic transitional zones support the hypothesis of squamous metaplasia occurring in an already existing adenocarcinoma in the development of adenosquamous carcinoma of the stomach.
Female ; Male ; Humans ; Adenocarcinoma ; Neoplasm Metastasis

PURPOSE: The aim of this retrospective study is to analyze the relationship between local factors and survival rate of dental implant which had been installed and restored in Seoul Veterans Hospital dental center for past 10 years. And when the relationship is found out, it could be helpful to predict the prognosis of dental implants. MATERIALS AND METHODS: A retrospective study of patients receiving root-shaped screw-type dental implants placed from January 2000 to December 2009 was conducted. 6385 implants were placed in 3755 patients. The following data were collected from the dental records and radiographs: patient's age, gender, implant type and surface, length, diameter, location of implant placement, bone quality, prosthesis type. The correlations between these data and survival rate were analyzed. Statistical analysis was performed with the use of Kaplan-Meier analysis, Chi-square test and odds ratio. RESULTS: In all, 6385 implants were placed in 3755 patients (3120 male, 635 female; mean age 65 +/- 10.58 years). 108 implants failed and the cumulative survival rate was 96.33%. There were significant differences in age, implant type and surface, length, location and prosthesis type (P<.05). No significant differences were found in relation to the following factors: gender, diameter and bone quality (P>.05). CONCLUSION: Related factors such as age, implant type, length, location and prosthesis type had a significant effect on the implant survival.
Dental Implants ; Dental Records ; Hospitals, Veterans ; Humans ; Kaplan-Meier Estimate ; Male ; Prognosis ; Prostheses and Implants ; Retrospective Studies ; Survival Rate

No abstract available.
Adolescent* ; Humans ; Male* ; Psoriasis*

No abstract available.
Borrelia burgdorferi* ; Borrelia* ; Humans ; Korea*