| 王新霞,栗河舟,王铭,董艳会,韩瑞征,刘灵,徐嵩龄.胎儿菱脑融合产前超声表现[J].中国医学影像技术,2024,40(11):1642~1646 |
| 胎儿菱脑融合产前超声表现 |
| Prenatal ultrasonic manifestations of fetal rhomboencephalosynapsis |
| 投稿时间：2024-05-09 修订日期：2024-07-09 |
| DOI：10.13929/j.issn.1003-3289.2024.11.003 |
| 中文关键词: 菱脑 胎儿 先天性畸形 超声检查 |
| 英文关键词:rhombencephalon fetus congenital abnormalities ultrasonography |
| 基金项目:河南省医学适宜技术推广项目(SYJS2022066)。 |
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| 中文摘要: |
| 目的 观察胎儿菱脑融合(RES)产前超声表现。方法 回顾性分析15胎单胎RES,观察其产前颅内、外超声表现。结果 15胎(15/15,100%)均表现为小脑横径低于同孕周胎儿正常值第3百分位数及双侧小脑半球融合;其中14胎(14/15,93.33%)小脑蚓部完全、1胎(1/15,6.67%)部分缺失;4胎(4/15,26.67%)第四脑室不显示,11胎(11/15,73.33%)第四脑室指数(4Vi)＜1;未见蚓部与小脑半球间"分裂线"征。14胎(14/15,93.33%)合并颅内、外畸形,其中13胎(13/14,92.86%)合并颅内其他畸形、10胎(10/14,71.43%)合并颅外畸形;1胎(1/15,6.67%)未见其他畸形。结论 产前超声中,胎儿RES主要表现为小脑横径小、小脑蚓部完全或部分缺失、第四脑室不显示或发育异常及双侧小脑半球融合,易合并颅内、外其他畸形。 |
| 英文摘要: |
| Objective To observe prenatal ultrasonic manifestations of fetal rhomboencephalosynapsis (RES). Methods Data of 15 singletons with RES were retrospectively analyzed, and the prenatal intracranial and extracranial ultrasonic manifestations were observed. Results All 15 fetuses were found with transverse cerebellar diameter lower than the 3rd percentile of normal value in the same gestational week and bilateral cerebellar hemisphere fusion (15/15, 100%). Cerebellar vermis completely loss was observed in 14 fetuses (14/15, 93.33%), while partially loss was noticed in 1 fetus (1/15, 6.67%). Invisible of the fourth cerebral ventricle was detected in 4 fetuses (4/15, 26.67%), while the fourth cerebral ventricular index (4Vi) ＜1 was found in 11 fetuses (11/15, 73.33%). No "split line" sign between vermis and cerebellar hemisphere was detected. A total of 14 (14/15, 93.33%) were found with combining intracranial or extracranial malformations, including 13 (13/14, 92.86%) with other intracranial malformations, 10 (10/14, 71.43%) with extracranial malformations, whereas 1 (1/15, 6.67%) fetus had no other malformation. Conclusion Prenatal ultrasonic manifestations of fetal RES mainly included small cerebellum transverse diameter, complete or partial loss of vermis, invisible or dysplasia of the fourth cerebral ventricle, fusion of bilateral cerebellar hemispheres, as well as combining with other intracranial and extracranial malformations. |
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