Chordoma is a malignant, slow growing and locally aggressive tumor. It arises from remnants of the notochord and accounts for 1–4% of all primary bone tumors. They usually arise from anywhere along the spine, from base of the skull to the sacrococcygeal area and usually do not metastasize. Chordomas are slow-growing tumors which are not responsive to conventional chemotherapy or radiation. They...

Email comments/questions to [email protected], fax 800-556-3288, or log on to www.VetLearn.com Osteosarcoma (OSA) is the most common primary bone tumor of the appendicular skeleton in dogs. Chondrosarcoma (CSA), fibrosarcoma (FSA), and hemangiosarcoma (HSA) are also considered primary bone tumors, although they are diagnosed much less frequently. Other tumors with skeletal involvement, s...

introduction: metastatic lesions of the oral cavity are extremely rare, accounting for approximately 1% of all malignant oral tumors. the most common primary sources of metastatic tumors in the oral region are, from the most to the least common, the breast, lung, kidney, bone, and colon. renal cell carcinoma accounts for nearly 3% of all adult malignancies. it usually metastasizes to the lungs,...

Cancer is one of the major leading causes of death all over the world. Primary and secondary bone tumors can significantly deteriorate the quality of life (QOL) and the activity of daily living (ADL) of the patients. These unwelcome diseases become a social and economic burden seriously. Thus, more effective therapies for both primary and secondary bone tumors are actually required. Bone homeos...

abstract background: osteoid osteoma is a benign bony neoplasm and its classic treatment is surgery. in the r ecent decades percutaneous laser therapy was suggested to be replaced by surgery. in this study we have reviewed the results of the first applications of interstitial laser photocoagulation (ilp) for treatment of osteoid osteoma in iranian patients. materials and methods: in this case s...

testicular cancer typically spreads to the lymph nodes, but hematogenous dissemination to distant organs can also occur. bone metastasis is uncommon and is thought to be a poor prognostic indicator. jaw metastasis is exceedingly rare but is of great clinical significance, since it may be the first sign of an occult testicular cancer or the first evidence of relapse of a known tumor. herein, we ...

Ewing Sarcoma is the second most common primary bone cancer. To date, only a few cases of cutaneous have been published. We present unique case Sarcoma, which presented as blue to violaceous mass on young woman’s chest. The lesion clinically did not align with previous reports but pathology and immunohistochemical stains confirmed diagnosis. Because may masquerade benign tumors, dermatologists ...

background: primary malignant bone tumors are heterogeneous groups of neoplasms, which affect mainly children and adolescents. the most common types are osteosarcoma, ewing sarcoma and chondrosarcoma. elevation of scd30 and scd40l has been observed in lymphoma, leukemia and autoimmune disorders. objective: to evaluate serum concentrations of scd30 and scd40l in patients with primary malignant b...

osteosarcoma is a primary malignant tumor of bone, which can involve jaws. this article reviews osteosarcoma of the jaws referred to the department of oral pathology, dental faculty of tehran university of medical sicences and pathology department of cancer institiute in imam khomeini hospital during 30 years from 1349 to 1378 and also reviews jaw osteosarcoma in english literature. the purpose...

Osteochondroma is an osseous protuberance with cartilaginous growth potential that usually forms at the ends of long bones such as knee, hip, shoulder and joints(1). Osteochondromas are one of the most common benign tumours of bone, approximately 35% to 50% of all benign tumors and 8% to 15% of all primary bone tumors (2). Only about 1% of these occur within the head and neck region (1). The mo...