骨巨细胞瘤的影像学表现(附57例报告)

Diagnostic value of MRI on osteoclastoma

目的探讨骨巨细胞瘤的影像学表现特点。方法搜集经手术证实的57例骨巨细胞瘤资料,分析MRI、CT及X线平片征象并与病理结果对照。结果X线及CT扫描均见骨端偏心膨胀性改变,无钙化,无硬化,部分病例可见粗大骨嵴;T1WI表现为等、低信号,T2WI为不均匀高信号,Gd-DTPA增强扫描呈中度或明显强化,并可显示瘤内坏死、囊变、出血、含铁血黄素沉着及液平等。结论X线平片结合CT、MRI可显著提高骨巨细胞瘤的诊断准确率,对治疗方案的选择提供重要依据。

Objective To describe the imaging features of esteoclastoma. Methods Fifty - seven patients with osteoclastoma, documented by pathologic examination of resected specimens, and their data of X - ray, CT and MRI were analyzed and correlated with pathologic features of the tumors. Results The tumors of all patients were located in the end of bones with eccentric distentive growth. Large ridge were seen in some tumors. No calfications and sclerotic change were seen. Tumors showed isointensive or slightly hypointensive on MR T1 - weighted images and heterogeneneously h）,perintensive on MR T2 - weighted images with intemal irregular intense areas. Conclusions Imaging examinations, including X - ray, CT and MRI, can show well the tumor and the peripheral structures and improve the diagnosis. Besides above, imaging examinations can also help to facilitate surgical planning.