Fakhry J, Reiser M, Shapiro L R, Schechter A, Pait L P, Glennon A
J Ultrasound Med. 1986 Sep;5(9):489-92. doi: 10.7863/jum.1986.5.9.489.
Ten cases displaying a focal area of increased echogenicity in the lower fetal abdomen on prenatal sonography are reported. This was an isolated finding in each case. Nine cases were noted early in the second trimester. The last case corresponded to a postmature gestation. In all cases, a normal lower abdomen was documented on follow-up prenatal sonography, at birth, or at autopsy. The authors believe that increased echogenicity in the lower fetal abdomen represents a normal variant that is more common than suggested by the literature. A possible explanation of this pattern is offered.
本文报告了10例产前超声检查显示胎儿下腹部局部回声增强的病例。每例均为孤立性发现。9例在孕中期早期被发现。最后1例为过期妊娠。所有病例在后续产前超声检查、出生时或尸检时均记录下腹部正常。作者认为，胎儿下腹部回声增强代表一种正常变异，其发生率比文献报道的更高。本文还对此现象给出了一种可能的解释。
