| 江肖松,关键,林玲,孙灿辉,李子平,刘明娟,郭燕.假囊肿型胎粪性腹膜炎的产前MRI和产后CT影像表现[J].中国医学影像技术,2016,32(1):104~108 |
| 假囊肿型胎粪性腹膜炎的产前MRI和产后CT影像表现 |
| Prenatal MRI and postnatal CT image manifenstations of meconium peritonitis pseudo-cyst |
| 投稿时间：2015-07-18 修订日期：2015-11-22 |
| DOI：10.13929/j.1003-3289.2016.01.027 |
| 中文关键词: 胎粪性腹膜炎 假囊肿 胎儿 婴儿 磁共振成像 体层摄影术,X线计算机 |
| 英文关键词:Meconium peritonitis Pseudocyst Fetus Infant Magnetic resonance imaging Tomography,X-ray computed |
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| 中文摘要: |
| 目的 探讨假囊肿型胎粪性腹膜炎(MPC)胎儿期MRI和婴儿期CT的影像学特点。方法 回顾性分析10例经产后病理证实的MPC胎儿期及婴儿期影像资料,4例产前行胎儿MR平扫,4例出生后行腹部CT平扫及双期增强扫描,2例序贯行胎儿MR和产后腹部CT检查。观察其CT及MRI表现,并与病理结果对照。结果 3例病灶位于中上腹,右上腹肝下缘4例,右中下腹1例,左腹2例。MR检查的6胎中病灶T2WI均呈稍高/高信号,T1WI呈高信号1胎,低信号3胎,等/稍低信号2胎。CT检查的6例中5例壁囊薄,1例囊壁较厚;6例病灶囊壁均呈轻-中度强化;5例CT示病灶与邻近肠管关系密切、分界不清;4例囊壁及内部见多发钙化。具有产前及产后影像资料的2例中1例胎儿期腹腔积液于产后消失;2例产后CT检查囊壁及囊内出现多发钙化。结论 MPC的产前MRI及产后CT表现均具有一定特征性;认识MPC的病理生理过程和影像特征,有助于准确诊断胎儿或婴儿MPC。 |
| 英文摘要: |
| Objective To investigate fetal MRI and infant CT features of meconium peritonitis pseudo-cyst (MPC). Methods The fetal and infant imaging data of 10 surgical pathologically confirmed MPC were analyzed retrospectively. Four patients received plain fetal MRI and four cases underwent plain and dual-phase enhanced CT scan, while two patients underwent both fetal MR and postnatal CT scan. Both CT and MRI manifestations were compared with pathological findings. Results Three cases had lesions located in the mid upper abdomen, 4 under the liver in the right upper quadrant, 1 in the right lower abdomen, 2 in the left abdomen. On T2WI, all 6 fetuses showed slightly higher/high signal intensity. On T1WI, 1 fetuse showed high signal intensity, 3 fetuses showed low signal intensity and 2 showed iso-/slightly lower signal intensity. Plain CT showed that 5 cases had thin capsule wall while 1 had thick wall; enhanced CT scan demonstrated that the capsule wall of all 6 cases presented slight to moderate enhancement; a close relationship with adjacent bowel with unclear boundary was found in 5 cases; multiple calcifications in cyst wall and cavity were found in 4 cases. Among the 2 cases with both fetal and infant imaging data, fetal ascites disappeared postpartum in 1 case. Two cases appeared calcification in cyst wall and cavity on postnatal CT which was not seen on prenatal MRI. Conclusion Prenatal MRI and postnatal CT imaging of MPC have some characteristic manifestations. Recognition the pathophysiology and imaging findings of MPC will be helpful for accurate diagnosis. |
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