Table of Contents
ISRN Obstetrics and Gynecology
Volume 2011, Article ID 175916, 3 pages
Case Report

The “Lasso Sign”: An Early Sonographic Sign of Posterior Meningocele

1Department of Obstetrics and Gynecology, The Chaim Sheba Medical Center, Tel HaShomer 52621, Israel
2Pediatric Neurosurgery Unit, The Edmond and Lily Safra Children's Hospital, The Chaim Sheba Medical Center, Tel HaShomer 52621, Israel

Received 20 August 2010; Accepted 22 September 2010

Academic Editor: A. Herman

Copyright © 2011 Alina Weissmann-Brenner et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Posterior meningocele is an uncommon form of spina bifida. We present a case of unique posterior meningocele diagnosed at the early second trimester anatomical scan using 2D and 3D ultrasound. The sonographic appearance resembled “lasso”. The prenatal follow-up was uneventful, with no demonstration of tethered cord. Clinical, neurological and radiological examinations following delivery and at the age of four months were unremarkable.