Resolution of presumed arachnoid cyst in utero.

@article{Elbers1999ResolutionOP,
  title={Resolution of presumed arachnoid cyst in utero.},
  author={S E Elbers and Margaret E. Furness},
  journal={Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology},
  year={1999},
  volume={14 5},
  pages={353-5}
}
We present a case of presumed arachnoid cyst that was diagnosed at 18.5 weeks' gestation, developed a hematoma at 28 weeks and had virtually resolved by 32 weeks. Expectant management of antenatally diagnosed cases is suggested.