脑血吸虫肉芽肿的MRI诊断

MRI diagnosis of cerebral schistosomal granuloma

目的通过对脑血吸虫肉芽肿的MRI表现、病理材料及临床特征进行回顾性分析,探讨MRI对该病的诊断价值。方法搜集资料完整的脑血吸虫肉芽肿11例,其中7例经手术病理证实,4例结合临床和实验室检查证实,对MRI表现及病理进行分析。采用1.0TMR扫描机,全部病例均行增强扫描。结果6例单发,5例多发;病灶主要位于顶叶(5例),枕叶(5例),颞叶(4例),额叶(3例),小脑半球(1例)。平扫呈团、片状异常信号,T1WI为低、等信号,T2WI为高信号,周围水肿明显,增强扫描有多个小结节状、斑点状强化,并呈“泥砂样”聚集成团。结论脑血吸虫肉芽肿的MRI表现有很高的特异性,MRI对本病的诊断和鉴别诊断有重要价值。

Objective To discuss the diagnostic value of MRI in cerebral schistosomal granuloma through retrospective analysis of the MRI features, clinical charachteristice, and post - surgery pathological findings. Methods 11 patients with cerebral schistosomal gsanuloma proved by pathological examination （ n = 7） or clinical material （ n = 4） were involved in the study. The MBI features and pathological findings were analyzed retrospectively. Plain and enhanced MBI were performed in all patients with Siemens 1.0T MBI scanner. Results Single lesion was found in 6 cases, and multiple lesions were found in 5 cases. Most lesions were located in parietal lobe （5 cases） ,occipital lobe （5cases）, temporal lobe（4cases）, frontal lobe（3 cases） ,and epencephalon（ 1 case）. All the lesions were iso - or hypo - intensity on T1WI, hyperintensity on T2WI, with multiple nodules, spot or ＂silt - like＂ enhancement and periphery edema. Conclusion MRI manifestations of cerebral schistosomal granuloma have specific features, and MBI is one of the most valuable tools for the diagnosis and differential diagnosis of this disease.