<div><p>Primary lung neoplasms are rare in children. Lung masses in children are approximately 10 times more likely to represent a benign developmental or reactive lesion than a neoplasm, with a ratio of primary tumors to metastatic tumors to nonneoplastic lesions of 1:5:60.1 Common malformations forming solid and cystic masses of the ...

<div><p>The term malignant fibrous histiocytoma (MFH) was first coined by Ozzello et al1 in 1963 and described by O'Brien and Stout2 in 1964. During the next 10 years, 5 variants of the tumor were introduced. The origin of the tumor cells has been a cause of an ongoing debate but it has become ...

<div><p>Primary osteosarcoma of the breast, which is histologically indistinguishable from conventional osteosarcoma of the bone and other extraskeletal sites, is an extremely rare tumor. In comparison, bone-producing spindle cell neoplasms with an epithelial origin, so-called metaplastic (sarcomatoid) carcinomas, are far more common. The histogenesis of primary osteosarcoma of the breast is not clear, but ...

<div><p>INTRODUCTION</p><p>Osteoid osteomas are benign circumscribed tumours of spongy bone occurring most often in the bones of the extremities and vertebrae of young people. They are often missed in the small bones of the hands and feet because of their atypical presentations. Common causes of ankle pain in ...