特殊部位异位妊娠的MRI表现

目的:探讨特殊部位异位妊娠的MRI表现及诊断价值。方法:回顾性分析12例经手术病理证实特殊部位异位妊娠的MRI表现,术前均行MRI平扫,其中5例行Gd-DTPA增强扫描。结果:12例中,子宫疤痕妊娠5例,均位于子宫肌壁下段原疤痕处;子宫角妊娠3例(左侧1例,右侧2例);输卵管间质部妊娠2例(左右各1例);左侧卵巢及左侧子宫底部肌壁间妊娠各1例。本组伴发子宫腺肌症4例,腹壁切口子宫内膜异位症1例。MRI显示病灶部位与手术结果基本一致,病灶呈圆形或椭圆形,边界尚清,在T1WI、T2WI及STIR序列上均呈高低混杂信号;增强示病灶明显强化,部分液化坏死区不强化。结论:不同部位异位妊娠的MRI表现具有相同特征,对临床早期明确诊断及治疗有重要价值。

MRI features of special-site ectopic pregnancy

Objective：To investigate the MRI features and the diagnostic value of special-site ectopic pregnancy.Methods：The retrospective analysis was performed on 12 cases with the MRI features of special-site ectopic pregnancy proved by operation and pathology were included.All cases were scanned by MRI and 5 cases enhanced scanning were done.Results：In 12 cases,5 cases of uterine scar pregnancy were lower in the original scars of the uterine;3 cases were cornual pregnancy（1 case in left side,2 cases in right side）;2 cases were in interstitial tubal pregnancy（1 case in left side,1 case in right side）;1 case was in left ovary and 1 case was intramural pregnancy.4 cases of adenomyosis and one endometriosis were accompanied in the group.The lesions showed on MRI were consistent with the surgical site.The lesions were showed round or oval.The boundary was still clear.Images showed homogeneous hyperintensity in T1WI,T2WI and STIR sequences.The lesions were enhanced significantly,the necrotic area was not enhanced.Conclusion：The MRI features of different ectopic pregnancy were similarity and characteristic,it has important value of the early clinical diagnosis and treatment.