Abdullah Selwan B, Dietz Kelly R, Holm Tara L
Diagnostic Radiology and Nuclear Medicine, University of Maryland Medical Center, Baltimore, MD, USA.
Medical School, University of Minnesota, Minneapolis, MN, USA.
Pediatr Radiol. 2016 Nov;46(12):1736-1743. doi: 10.1007/s00247-016-3680-1. Epub 2016 Aug 23.
Fetal magnetic resonance imaging (MRI) is a routinely used tool in prenatal diagnosis; however, there is a lack of studies evaluating incidental findings observed in the mother.
This study describes and quantifies incidental findings observed in the mother during fetal MRI.
We reviewed all fetal MRI studies at the University of Minnesota Medical Center from February 2008 to September 2014. Two pediatric radiologists retrospectively conducted a consensus evaluation. The maternal findings were categorized into neurologic, gynecologic, urinary, gastrointestinal and musculoskeletal. Hydronephrosis consistent with the stage of pregnancy was recorded but was not included as an abnormal finding. Abnormal findings were classified into three groups, depending on their clinical significance: level I (low), level II (medium) and level III (high).
We evaluated 332 pregnant patients with a mean age of 29.3 years and a mean gestational age of 29 weeks. Of these, 55.4% had at least 1 incidental finding, for a total of 262 incidental maternal findings. Of the 262 abnormalities, 113 (43.1%) were neurologic, 69 were gynecologic (26.3%), 36 (13.7%) urinary, 24 (9.2%) gastrointestinal and 20 (7.6%) musculoskeletal. Of the 262 incidental findings, 237 (90.5%) were level I, 24 (9.2%) were level II and 1 (0.4%) was level III.
Our results suggest that although the vast majority of incidental maternal findings are benign, more significant findings are still encountered and should be expected.
胎儿磁共振成像（MRI）是产前诊断中常用的工具；然而，缺乏对母亲身上偶然发现情况的研究。
本研究描述并量化胎儿MRI检查时在母亲身上发现的偶然情况。
我们回顾了2008年2月至2014年9月在明尼苏达大学医学中心进行的所有胎儿MRI检查。两位儿科放射科医生进行了回顾性的一致性评估。母亲的检查结果分为神经、妇科、泌尿、胃肠和肌肉骨骼方面。与孕期阶段相符的肾积水被记录下来，但不被视为异常发现。根据临床意义，异常发现分为三组：I级（低）、II级（中）和III级（高）。
我们评估了332名平均年龄为29.3岁、平均孕周为29周的孕妇。其中，55.4%的孕妇至少有1项偶然发现，母亲身上共发现262项偶然情况。在这262项异常中，113项（43.1%）为神经方面，69项为妇科方面（26.3%），36项（13.7%）为泌尿方面，24项（9.2%）为胃肠方面，20项（7.6%）为肌肉骨骼方面。在这262项偶然发现中，237项（90.5%）为I级，24项（9.2%）为II级，1项（0.4%）为III级。
我们的结果表明，虽然母亲身上绝大多数偶然发现是良性的，但仍会遇到更严重的发现，对此应有所预期。
