骨盆嗜酸性肉芽肿影像诊断及误诊分析

Imaging diagnosis of pelvic eosinophilic granuloma and analyses of the misdiagnoses

目的探讨骨盆嗜酸性肉芽肿的影像学特征,提高其影像诊断水平。方法回顾性分析经手术病理证实的24例骨盆嗜酸性肉芽肿的临床和影像学资料,并对其中5例误诊病例进行分析,所有病例均经X线平片检查,同时行CT检查17例,MRI检查9例。结果发生于耻骨6例,坐骨5例,髂骨13例,多表现为圆形、类圆形边界清楚的骨质破坏或不规则溶骨性骨破坏,部分病例可见骨膜反应及软组织肿块,发生于髂骨者,可呈轻度膨胀改变,有一定诊断及鉴别诊断意义。结论骨盆嗜酸性肉芽肿的影像表现有一定的特征性,综合分析能提高其诊断准确性。

Objective To explore the imaging diagnosis of pelvic eosinophilic granuloma and improve diagnosis accuracy.Methods A retrospective analysis of the plain film,CT and MRI was conducted in 24 cases of pathologically confirmed eosinophilic granuloma.All the patients received radiography,CT scan was performed in 17 cases and MRI was done 9 cases.Results In the 24 cases of eosinophilic granuloma,6 lesions were located in the pubis,5 in the ischium and 13 in the iliac region.The lesion showed bony destruction or irregular bony destruction,with periosteal reaction and soft tissue mass.Conclusion Pelvic eosinophilic granuloma has characteristic imaging features,and combination of the imaging findings can improve the diagnosing accuracy.