【摘要】 回顾性分析经手术病理确诊的16例骨旁骨肉瘤的临床表现及影像学特征。16例患者中,男9例,女7例。年龄16～55岁,平均年龄31岁,中位年龄33.5岁。发病部位以股骨下端后方最多见(10/16)。平片显示多数病例为附着于干骺端骨皮质表面的宽基底蘑菇状致密肿块影。4例CT显示于肿块和其下骨皮质间出现狭窄的透亮隙,MRI证实4例骨髓受累及。回顾性分析结果显示,骨旁骨肉瘤具有特征性的影像学表现,CT及MRI能很好地显示骨髓受累程度。本病应与骨化性肌炎和骨软骨瘤等病变相鉴别。更多还原

【Abstract】 The imaging signs and clinical manifestations of 16 cases of parosteal osteosaroma confirmed operatively were analyzed retrospectively. In the 16 cases, 9 were male and 7 were female, aging from 16-55 years, with an average age of 31 years, median age of 33.5 years. The tumor was particularly common on the posterior surface of the distal portion of the femur(10/16). Plain film showed a large, radiodense sessile fungform mass to the surface of the metaphysis of tubular bone in majority of cases. CT scaning demonstrated narrow cleavage plane between the mass and the underlying bone in 4 cases. MR imaging showed the marrow was involved in 4 cases. The retrospective results demonstrated that there were characteristic imaging manifestations of the neoplasm. CT and MRI scanning technique may excellently show the degree of marrow involvement. The radiographic features of parosteal osteosarcoma must be differentiated from other diseases such as myositis ossificans, sessile osteochondroma, etc.更多还原