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目的：评价ＣＴ在骨盆部软骨肉瘤中的诊断价值。材料与方法：分析总结经手术及病理证实的２０例骨盆部软骨肉瘤的平片及ＣＴ表现（包括７例复发）。结果：ＣＴ能显示所有病例中的软组织包块及肿块内的不同密度，而平片只能在１４例中显示有肿块影。ＣＴ能显示全部病例的肿瘤内有不同形态的钙化，而平片只显示１５例有钙化。ＣＴ能清楚显示肿瘤的范围，而平片显示不清楚。ＣＴ还能对７例术后复发做出可靠诊断。结论：在骨盆部软骨肉瘤中，ＣＴ对肿瘤的定位、瘤内密度的显示、病灶范围及毗邻关系的显示等方面均优于传统Ｘ线平片，而且ＣＴ对复发的判断很有价值。
Objective: To evaluate the diagnostic value of CT in pelvic chondrosarcoma. Materials and Methods: Twenty patients with pelvic cartilage sarcoma confirmed by surgery and pathology were reviewed and the CT findings (including 7 recurrences) were analyzed. RESULTS: CT could show soft tissue masses and different densities within the mass in all cases, whereas plain films only showed mass shadows in 14 cases. CT can show all forms of calcification in all tumors, while plain films only showed calcification in 15 cases. CT can clearly show the extent of the tumor, but the plain film does not show clearly. CT can also make a reliable diagnosis of recurrence in 7 cases. Conclusion: In pelvic chondrosarcoma, CT is superior to traditional X-ray film in localization of tumor, display of intratumoral density, display of lesion range and adjacent relationship, and CT is valuable in the judgment of recurrence.