骨旁骨肉瘤(附9例分析)

本文分析了9例骨旁骨肉瘤临床、病理及X线所见。X线典型征象为骨旁不规则分叶状致密肿块,于瘤体基底部较宽,有包绕骨干之特点,好发于股骨下端。肿瘤与皮质间有一窄的透亮带为其特征征象。肿瘤邻近之骨皮质常增厚,称为“骨瘤样反应”。文中特别指出肿瘤深部存在的X线透亮区系提示肿瘤已有间变的可能。文中最后提出了骨旁骨肉瘤的鉴别诊断。

PAROSTEAL OSTEOSARCOMA (ANALYSIS OF 9 CASES)

The clinical, pathological changes and X-ray featuresof 9 cases of parosteal osteosarcoma are analysed. The roentgenogramcharacteristically showed a large dense lobulated mass attached by abroad base to the underlying bone, it has a tendency to encircle thehost bone. Found most commonly in the lower end of the femur.Highly characteristic in the early stage is a fine radiolucent lineseparating the dense mass from the cortex, this line represents thethickness of the periosteum. There is often marked thickening of theadjacent host cortex, called by some an "osteomatous reaction". Theauthor point out: The lucent zones that varied in size and numberwithin the deep area of the tumor are represented anaplasia of thetumor. The differential diagnosis are discussed.