1儿童骨肿瘤及瘤样病变的特点国内外现有资料表明小儿骨肿瘤及瘤样病变虽然不是儿童的多发病,但它却是儿童死亡的重要原因之一。因而正确诊断儿童骨肿瘤十分重要。由于儿童骨肿瘤及瘤样病变发病率、发病部位以及预后均有规律性,与成人比较有一定的差异。所以临床及放射科医师有 1 characteristics of bone tumors and tumor-like lesions in children at home and abroad available information shows that pediatric bone tumors and tumor-like lesions, although not more than children, but it is one of the important causes of child death. Therefore, the correct diagnosis of bone tumors in children is very important. Due to the incidence of bone tumors and tumor-like lesions in children, the incidence of sites and prognosis are regular, compared with adults there are some differences. So clinicians and radiologists have