An overview of the presentation, clinical and radiographic features, and management of the most common benign pediatric bone tumors will be presented below. Malignant bone tumors (Ewing sarcoma and osteosarcoma) are discussed separately. (See "Clinical presentation, staging, and prognostic factors of the Ewing sarcoma family of tumors" and "Osteosarcoma: Epidemiology, pathogenesis, clinical pre...

breast cancer is common and is considered second cause of cancer related mortality in females. regarding importance of breast cancer, more investigation in this field is recommended. for many years investigators believed that neoplasms were not innervated but new findings have proved otherwise. this descriptive study was carried out to compare number of nerve fibers in benign, malignant and nor...

Osteochondroma is the most common form of benign bone tumors. Chondrosarcoma a rare malignant tumor that may be primary or secondary. We report case 19-year-old man with low grade chondrosarcoma secondary to transformation osteochondroma right distal femur. Here we discuss osteochondroma, chances malignancy chondrosarcoma, work up done in our case, histopathological features differentiate from ...

BACKGROUND Tumors involving the hand skeleton are rare. However, a basic knowledge of hand tumors is necessary for every clinician. This is due to the importance of distinguishing typical benign tumors from life or limb threatening malignant ones. METHODS This study is a review of 99 cases of osseous hand tumors presented to the department of orthopedic surgery, Imam Khomeini Hospital in Tehr...

Malignant fibrous histiocytoma (MFH) is an aggressive soft tissue sarcoma occurring in the late adulthood. It may rarely arise as a primary neoplasm in bone, but usually in the long bones and accounts for less than 1% of the malignant tumors of bone. Its presentation in the facial bones and skull is extremely rare. Malignant fibrous histiocytoma of bone is a highly malignant tumor that recurs, ...

OBJECTIVE To investigate the CT and MR imaging findings and differential diagnosis of malignant vascular tumors of bone. MATERIALS AND METHODS CT and MR imaging findings of 18 patients with histopathology-proven malignant vascular tumors of bone were examined. Assessed image features included age, sex, location, CT findings, and MR imaging appearances and dynamic contrast-enhanced MR imaging....

Aims At the histological level, the differential diagnosis of osteoblastic bone tumors is characterized by several problems that cannot be solved by conventional histological methods, including immunohistology. Differentiating aneurysmal bone cyst from telangiectatic osteosarcoma or giant cell tumor from giant cell-containing highly malignant osteosarcoma are only two examples reflecting the co...

BACKGROUND The treatment of malignant bone tumors in skeletally immature patients is difficult because the required surgery removes the growth plate of one extremity. To date, few techniques for limb salvage have been successful due to complications involving limb expansion and limb-length discrepancy. Newer technology is now available for prosthetic replacements for modular expansion. METHOD...

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,...

The technique of cryosurgery has been used to control local recurrence in a variety of benign and malignant bone tumors. Early studies revealed significant complication rates (25%) that included fracture, infection, and soft tissue injury. Our method of cryosurgery has yielded excellent tumor control with improved complication rates. The objective of this study is to determine the characteristi...