Optic nerve gliomas manifest either as a solitary form or a component of von Recklinghausen's neurofibromatosis. The reported incidence of coexistence with neurofibromatosis varies from 12% to 70%. Usually there are no significant cytological differences between the gliomas that accomapny the disease and those that are deemed to be solitary manifestations. The only possible difference between them is the apparently more common association, with the former, of extensive arachnoid hyperplasia and of a more florid local gliomatous infiltration into the leptomeninges, altogether resulting in perineural thickening. Our cases were 8 and 6 years old girls, respectively, presented with slowly progressive proptosis for 4 years and visual disturbance for 2.5 months. There were multiple cafe au lait spots on their trunks, and case 2 showed Lisch nodules in the iris. MRI of brain revealed unilateral optic nerve thickening with involvement of chiasm or multiple intracranial lesions. Resection of optic nerve tumor was performed. Microscopically, variable degree of tumorous change was seen. Most typically enlarged area was composed of intraneural and perineural portions surrounded by a layer of intact dura. Intraneural tumor revealed proliferation of elongated, spindle-shaped pilocytic astrocytes in intertrabecular spaces and distention of the pial septa with fibrovascular thickening. Another segment had areas with reactive gliosis. Perineural tissue was considerably thickened and, associated with proliferation of meningothelial cells and fibroblasts intermingled with astrocytes and Rosenthal fibers. There were increase of the optic nerve diameter and distention of the overlying dura. Foci of arachnoid cell hyperplasia were noted in both cases, although differed in degree. Immunohistochemically, the tumor cells expressed glial fibrillary acidic protein in intraneural and perineural portions particularly in case 2.
Incidence

No Abstract Available.
Humans

Primary malignant lymphoma of the appendix is an unconnnon neoplasm although the gastrointestinal tract is the most common extranodal site of malignant lymphoma. We report a case of primary malignant lymphoma of the appendix in a 54-year-old male, who presented with pain in the right lower abdomen. An appendectomy was performed. The appendix measured 9.5 cm in length and 5.5 cm in diameter. Cut sections showed a solitary circumferential mass in the appendiceal lumen. Light microscopic features were compatible with malignant lymphoma of diffuse large cell type(Working Formulation) and the immunophenotype was B cell type.

Proliferations of the endometrial glands form a continuum from focal glandular crowding through simple hyperplasia, complex hyperplasia and atypical hyperplasia to frank adenocarcinoma. But objective criteria to distinguish these proliferative endometrial lesions are not clear-cut and terminology is confusing. The p53 protein is a nuclear phosphoprotein that can regulate cell proliferation and suppress tumor growth. Mutation in the p53 gene have been reported in a variety of human tumors, and in selected malignancies overexpression of p53 has been associated with poor prognosis. In this study we examined a series of endometrial proliferative lesion, including hyperplasia, adenocarcinoma, and adenomyosis to determine whether or not p53 is overexpressed in these lesions. In the result, p53 immunoreactivity was observed in 3 of 17 (17.6%) simple hyperplasia, one of 6 (16.6%) complex hyperplasia, none of 3 (O%) atypical hyperplasia, 6 of 13 (46.1%) adenocarcinoma and none of 10 (O%) adenomyosis. In conclusion, p53 mutation seems to play a role in oncogenesis of endometrial adenocarcinoma in early phase but there was no significant relationship between p53 overexpression and histologic grade of adenocarcinoma.
Adenocarcinoma* ; Adenomyosis ; Carcinogenesis ; Cell Proliferation ; Crowding ; Endometrial Hyperplasia* ; Female ; Genes, p53 ; Humans ; Hyperplasia ; Prognosis

Paragonimiasis caused by Paragonimus westermani is essentially a pulmonary disorder, but it is also known to cause ectopic parasitism at various sites in human host such as the brain, muscle, liver, spinal cord and spleen. Ectopic parasitism of the female genital tract, especially the ovary is relatively rare. We have experienced a case of a 62-year-old Korean woman with asymptomatic ectopic paragonimiasis in the salpinx , ovary, and cul de sac.
Female ; Humans

Benign cystic mesothelioma (BCM) is a rare mesothelial lesion that forms multicystic masses in the upper abdomen, pelvis and retroperitoneum. Although it is categorized as a benign lesion, it has a tendency to recur. It is uncertain whether the nature of this lesion is reactive or neoplastic, but many articles support the conclusion that it is reactive rather than neoplastic. The majority of cases were associated with a history of a previous abdominal or pelvic operation, or an evidence of endometriosis or a pelvic inflammatory disease, or a combination of these findings. In a 26-year-old woman we experienced a case of BCM which was incidentally discovered at cesarean delivery revealing multilocular thin and translucent walled cysts in the pelvic cavity. Microscopic examination revealed a thin cyst wall that was composed of fibrous connective tissue and lined by internal stratified and external nonstratified single cuboidal epithelia.
Abdomen ; Adult ; Connective Tissue ; Endometriosis ; Female ; Humans ; Mesothelioma, Cystic* ; Pelvic Inflammatory Disease ; Pelvis

Elastofibroma is a rare benign tumor-like condition manifesting as firm and spherical mass with poorly circumscribed margins of fibroelastic tissue, occuring in the subscapular region or the chest wall of elderly persons. It is not a true neoplasm but rather a reactive or degenerative process causing abnormal elastogenesis. It is unilateral in the majority of cases and the right side is affected more commonly than the left. We report a case of bilateral elastofibromas removed from both subscapular regions of a 73-year-old female farmer. She was presented with tender masses on the bilateral subscapular areas for seven years. Microscopically, it consisted of a mixture of intertwining broad eosinophilic collagen bundles and elastic fibers associated with a few fibroblasts and mature fat cells. The elastic fibers had a degenerated beaded appearance or were fragmented into serrated globules in a linear arrangement.
Adipocytes ; Aged ; Collagen ; Elastic Tissue ; Eosinophils ; Female ; Fibroblasts ; Humans ; Thoracic Wall

PURPOSE: In evaluation of the limb fracture, MR scan has been used in limited roles as evaluating the associated soft tissue injury not the fracture itself. This study aims at understanding the possible role of MR in fracture. METHODS AND MATERIALS: thirty three sets of MR scans in twenty nine patients were retrospectively analyzed. They included twelve tibial plateau fractures, four pateliar fractures, four distal femur fractures, five epiphyseal fractures and four others. RESULTS: All MRs except two showed better image and more information about the extent of the injury (93.9%). Evaluation of cartilage (which was impossible on other modalities) was possible in 28 MR scans (84.8%). Surrounding marrow change associated with fracture was also able to be evaluated. Associated soft tissue injury or other abnormality could be evaluated-cruciate or collateral ligament injury, meniscus tear, chodromalacia or osteonecrosis. In epiphyseal injury, direct demonstrability of premature bony fusion on MR took a critical role in making a management plan. CONCLUSION: MR scan in fracture has its value in evaluating the extent and degree of the injury and it is especially advantageous in detecting cartilage injury and early complication of growth plate injury.
Bone Marrow ; Cartilage ; Collateral Ligaments ; Extremities* ; Femur ; Growth Plate ; Humans ; Osteonecrosis ; Retrospective Studies ; Soft Tissue Injuries

STATEMENT OF PROBLEM: When veneering composite resin-metal restoration is prepared, the fact that bond strength between Ti and composite resin is relatively weak should be considered. PURPOSE: The purpose of this study is to evaluate the shear bond strength between the veneering composite resin and commercial pure (CP) Ti / Ti-6Al-4V alloy according to the method of surface treatment. MATERIAL AND METHODS: The disks were cast by two types of metal. Their surfaces were treated by sandblasting, metal conditioner, TiN coating and silicoating respectively. After surface treatment, the disks were veneered by composite resin (Tescera(TM), Bisco, USA) which is 5 mm in diameter and 3 mm in thickness. The specimens were stored in water at 25degrees C for 24 hours, and then evaluated for their shear bond strength by universal testing machine (STM-5(R), United Calibration, USA). These values were statistically analyzed. RESULTS: 1. All methods of surface treatment were used in this study satisfied the requirements of ISO 10477 which is the standard of polymer-based crown and bridge materials. 2. The metal conditioner treated group showed the highest value in shear bond strength of CP Ti, silicoated group, TiN coated group, sandblasted group, in following order. 3. The silicoated group showed the highest value in shear bond strength of Ti-6Al-4V alloy, metal conditioner treated group, sandblasted group, TiN coated group, in following order. CONCLUSION: Within the limitations of this study, all methods of surface treatment used in this study are clinically available.
Alloys ; Calibration ; Collodion ; Crowns ; Tin ; Titanium ; Water

No abstract available.