Heron Werner, MD & Pedro Daltro, MD
ClÃnica de Diagnóstico por Imagem (CDPI) & Instituto Fernandes Figueira (IFF) – FIOCRUZRio de Janeiro – Brazil
Dorothy I. Bulas M.D.
Professor of Radiology and Pediatrics
Children"s National Medical Center
George Washington University Medical Center
111 Michigan Ave, NW,  Washington D.C. 20010
Neuroenteric cyst is a rare anomaly. It results from an incomplete separation of endodermal elements of the notochordal plate. In the ultrasound scan, it has an anechoic structure and is usually situated in the posterior mediastinum. The cyst wall contains elements of both gastrointestinal and neuronal origins, being connected with the meninges. There is a high concomitant association with the anomaly of segmentation of the vertebral body.