background: bone sarcomas are the most common malignancies of bone tissues in children, and are classified intotwo groups as osteosarcoma and ewing’s sarcoma. treatment and prognosis depend on the subtype and grade ofthe tumor. the goal of this study was to evaluate the features bone sarcoma in patients referred to mahak childrenhospital since 2007 to 2009.materials and methods: this was a retr...

this is the report of a mandibular neuroectodermal/ewing sarcoma in an 8-year-old male cross breed dogthat is unique because of tumor origin location. pedunculated, ulcerative, firm 6.0 × 4.0 × 5.5 cm tumor masseffaced the bone at the rostral part of the mandible and had a white-sanguineous color at cross sectionappearance. histopathologically, small round blue cell tumor was diagnosed. immunoh...

primary or secondary hyperparathyroidism can present with a brown tumor of the mandible. involvement of other skull and facial bones is extremely rare. only a few cases with brown tumor of the orbital bones have been reported. an is year old girl with primary hyperparathyroidism presented with unilateral exophthalmos caused by brown tumor of the orbital roof, lite patient had a 1.5 cm palpable ...

osteoma is a benign bone-forming tumor that usually arises in the craniofacial bones and rarely in the long bones. clavicular involvement is extremely rare. we report a 51-year-old woman with osteoma of the left clavicle. radiograph of the left shoulder showed a well-defined lobulated blastic mass in the proximal and mid-portion of the left clavicle. bone scintigraphy was performed 4 hours afte...

among the rare bone tumors, the osteoblastoma is a fascinating tumor. the rarity, the predisposition to occur in any bone and the diagnostic dilemma makes this infrequent tumor interesting. it is sporadically reported in the literature and what is rarer is its occurrence in the pelvis. the unusual location and inconclusive radiographic findings with diffused diagnostic evidences delays the mana...

Osteosarcoma is a malignant bone tumor that usually affects children and adolescents. Early detection of osteosarcoma tumors increases the likelihood successful therapy. Manual identification requires highly skilled doctors. In this study, we attempt to create model automatically diagnose into three categories; non-tumor, viable-tumor, tumor. The suggested methodology can help medical professio...