Two new cases of primary extraosseous Ewing's sarcoma of the spinal epidural space, and their histogenesis and differential diagnosis are described. The diagnosis of Ewing's sarcoma, which is essentially an undifferentiated tumour, depends largely on the exclusion of several other neoplasms with morphological similarities. With these two cases, 43 extraosseous Ewing's sarcomas have been reporte...

OBJECTIVE We conducted a retrospective analysis to evaluate the clinical manifestations and outcomes of a population of gastric cancer patients with bone metastasis. METHODS The subjects were 31 gastric cancer patients who were diagnosed with bone metastasis between January 2000 and December 2010. RESULTS The overall median survival time (MST) was 100 days. The results of a multivariate ana...

Bone scintigraphy with 99mTc diphosphonates may exhibit extraosseous lesions in addition to metastatic lesions. Multiple factors can affect extraosseous 99mTc methylene diphosphonate (MDP) uptake. Similar uptake pattern of 99mTc MDP and fluorine-18 fluorodeoxyglucose (18F FDG) in hepatic metastasis was not already notified. In our case, initial tumor necrosis and subsequent intracellular calcif...

Background. Conventional osteochondromas are common bone lesions developing in the metaphyseal region of growing skeleton. Marginal excision is the treatment of choice for such tumours. Extraosseous cartilaginous tumours are rare and their biological potential is poorly characterized. Case Presentation. A-52-year old woman presented with 3-year history of fullness and dull pain and inability to...

Extraosseous osteogenic sarcoma is a very rare malignant neoplasm. Out of the more than 400 cases of soft tissue sarcomas on file in our hospital, only 2 were extraosseous osteogenic sarcomas. Both were situated in the thigh. The first case was initially diagnosed as a hematoma and treated by marginal excision. The diagnosis of high-grade osteosarcoma primarily arising in soft tissue was made f...