骨源性毛细血管瘤的CT与MRI影像表现及其诊断价值

Study on the significance of manifestations of CT and MRI scanning of bone-derived capillary hemangioma and its diagnosis

目的探讨骨源性毛细血管瘤的CT与MRI影像表现及其诊断价值。方法选择12例资料完整的骨源性毛细血管瘤患者,采用CT与MRI的影像学检查方法,分析其影像学特征。结果 CT平扫均可见不均匀低密度病灶,病灶内常混有网格状的骨小梁。动态增强显示了渐进性的强化,在动脉期强化出现较早,在静脉期则能达到高峰。12例患者的MRI出现信号不均匀的情况,T1 WI表现为混杂的低信号,T2 WI则呈现为不均匀的高信号。动态增强扫描会表现出明显的递进式强化,周缘血供充足。大体病理标本显示骨小梁出现分离的软组织肿块。显微镜下可见骨皮质大多完整,分化成熟,纤维结缔组织增生,局部多有新生毛细血管增生,管壁薄,大小不一。结论骨源性毛细血管符合绝大部分良性骨肿瘤的生长、发育特点,其影像表现和骨良性肿瘤的一般表现较为相似,应在临床工作中结合CT和MRI影像表现进行诊断。

Objective To explore the performance and diagnostic significance of CT and MRI scanning in bone-derived capillary hemangioma. Methods The complete data of 12 cases with bony capillary hemangioma diagnosed by CT and MRI scanning and their imaging features were analyzed. Results The figures of CT scanning were seen as lesions with uneven density mixed with a grid-like trabecular bony lesion. Enhanced dynamic scanning showed gradual strengthening,which appeared earlier in arterial phase,and it in venous phase could be reached the peak. 12 patients undertaken MRI scanning showed signally uneven situation. T1WI showed mixed low signal,the high signal in T2WI was rendered uneven. Dynamic contrast-enhanced scanning showed progressive strengthening,with peripheral blood supply. Gross pathologic specimens showed trabecular bone mass visible in the presence of soft tissue separation. Microscopic finding showed mostly complete bone cortex with well differentiation and maturation,proliferation of fibrous connective tissue,a local proliferation of new capillaries with thin wall and large or small size.Conclusion The bone-derived capillary hemangioma is mostly characterized as benign growth bone tumor. Benign bone imaging findings consistent with the general performance,which should be important in diagnosis by combination of CT and MRI scanning in clinical practice.