Bowerman R A
Department of Radiology, University of Michigan Medical Center, Ann Arbor 48109-0030.
J Ultrasound Med. 1993 May;12(5):251-4. doi: 10.7863/jum.1993.12.5.251.
Forty-eight fetuses were prospectively evaluated to (1) determine the normal size range of herniated midgut and (2) correlate sonographically the timing of midgut herniation with CRL. All fetuses of CRL 38 mm or less, and two of six fetuses with a CRL of 40 to 42 mm, demonstrated midgut herniation. No fetuses with a CRL greater than 44 mm had this finding. The cord containing midgut increased roughly from 4 to 7 mm, in maximum dimensions, for CRL of 19 to 41 mm. An anterior abdominal wall mass greater than 7 mm at any CRL, or of any size in a fetus of CRL greater than 44 mm, is suggestive of a fetal anomaly. Alternatively, a cord base "mass" within the 4 to 7 mm range for a CRL of 19 to 44 mm can be considered normal and not to require any follow-up.
前瞻性评估了48例胎儿，以(1)确定疝出中肠的正常大小范围，以及(2)通过超声检查将中肠疝出时间与头臀长(CRL)相关联。所有CRL为38 mm或更小的胎儿，以及6例CRL为40至42 mm的胎儿中的2例，均显示有中肠疝出。没有CRL大于44 mm的胎儿有此发现。对于CRL为19至41 mm的胎儿，包含中肠的脐带最大尺寸大致从4 mm增加到7 mm。在任何CRL时，前腹壁肿物大于7 mm，或在CRL大于44 mm的胎儿中肿物为任何大小，提示胎儿异常。或者，对于CRL为19至44 mm的胎儿，脐带基部“肿物”在4至7 mm范围内可被视为正常，无需任何随访。
