osteosarcoma (os) is the eighth common cancer of childhood and its incidence is 4 cases in one million in children younger than 14. facial os incidence is estimated between 8 and 10% of os cases. the main etiology of os is unknown, but various predisposing factors are proposed such as radiation, radiotherapy, some benign bone diseases like paget’s disease or fibrous dysplasia. there is a 5-year...

background: understanding the differences in genetics of malignancies is crucial for therapeutic decisions. this systematic review was conducted to evaluate the current evidence on genetics of bone tumors in the context of pediatric cancer. material and methods: we performed a systematic review of the literature published on genetics of pediatrics bone tumors, using pubmed, google scholar, scie...

osteosarcoma (os) is a malignant mesenchymal tumor, which rarely occurs in the maxilla. although variable histologic and radiographic features of os have been reported previously, in the majority of the cases painful swelling of the jaw is mentioned as the first clinical presentation. furthermore, early diagnosis and wide surgical resection of the tumor are the most important determinant factor...

a case of bilateral intraosseous tumor of the calcaneus with different mri imaging is presented. on the left, radiological findings suggest intraosseous lipoma, but on the right-sided lesion, imaging studies were not convincing. the microscopic report showed foreign body granulomatous reaction, a rare clinical pathological discordant.

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...

the majority of osseous tumors of the hand are benign. the surgeon who evaluates and treats osseous tumors of the hand has to be familiar with limb anatomy, tumor biology, various presentations of the tumors and the range of treatment possibilities and their limitations. lesions in the hand more often present earlier in their course than those at other sites, just because they are more likely t...

we report occurrence of a rare case of giant cell tumor (gct), in a 28-year old woman, arising from anterior arc of right 6 th rib during pregnancy. it progressed rapidly during breast-feeding period, mimicking malignant bone tumor at delayed presentation.

background: giant cell tumor is a benign but locally aggressive bone neoplasm which uncommonly involves the skull. giant cell tumor (gct) of the sphenoid bone is relatively rare. in this report, we describe a tumor of the greater wing of left sphenoid bone. case presentation: a 31-year-old female was presented with headache, proptosis and diplopia of her left eye. cranial magnetic resonance ima...

introduction: thermal ablation by microwave (mwa) has proven efficacy in treatment of primary and metastatic cancers. soft tissue tumors could be ablated completely using mwa. however, bony tissue metastasis particularly spinal vertebral metastasis ablation has not reported yet. case presentation: a 50 year old male patient with primary diagnosed colon cancer undergone surgical resection of tum...

background: massive bone allograft is an option in cases of limb preservation and reconstruction after massive benign and malignant bone tumor resection. the purpose of this study was to analyze the outcome of these procedures at imam reza hospital, mashhad university of medical sciences. methods: in this study, 113 cases have been presented. eleven cases were excluded (patients has a traumatic...