نتایج جستجو برای: chondroblastic osteosarcoma
تعداد نتایج: 11710 فیلتر نتایج به سال:
Maxillary osteosarcomas are a relatively frequent malignant tumor of the oral cavity. Similarly to other skeletal osteosarcomas, they exhibit different cellular differentiation patterns, i.e. chondroblastic, osteoblastic, or fibroblastic. Although their histological features resemble those of osteosarcomas of the long bones, their pattern of evolution usually differs. Morphometric variations in...
Osteosarcoma is the most frequent malignant bone tumor with a peak incidence in the second and third decades of life. Diagnosis of patients with osteosarcoma is limited to clinico-pathological parameters whereas molecular markers of tumor initiation and promotion have not yet been identified. We aimed to study the expression of the anti-apoptotic survivin gene in osteosarcoma specimens. A total...
From September 1984 to December 1989, 38 patients of pediatric age with localized bone sarcomas received intraoperative radiotherapy (IORT) as part of a multidisciplinary treatment program. The age ranged from 6 to 21 years. The tumor histologies were 22 osteosarcomas and 16 Ewing's sarcomas. Thirty-four had initial primary disease (90%) and 4 were treated for local recurrence (10%). IORT was u...
AIMS To study the immunoexpression of cyclo-oxygenase (COX) 2 in osteoblastomas (OBs) and osteosarcomas (OSs), and to assess the utility of immunohistochemical analysis for COX 2 in the differential diagnosis of the two tumour forms. METHODS The immunohistochemical features of COX 2 were studied in 11 OBs and 30 OSs, including 26 high-grade OSs (16 osteoblastic, 7 chondroblastic, and 3 fibrob...
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