Sylvius aqueduct septum.

@article{Coolen2013SylviusAS,
  title={Sylvius aqueduct septum.},
  author={Tim Coolen and Laurent M{\'e}dart and Malek Tebache and Laurent Collignon},
  journal={JBR-BTR : organe de la Societe royale belge de radiologie (SRBR) = orgaan van de Koninklijke Belgische Vereniging voor Radiologie},
  year={2013},
  volume={96 6},
  pages={
          369-71
        }
}
We present a case of chronic hydrocephalus discovered in adulthood through an episode of acute decompensation. Multimodal imaging revealed the cause of this hydrocephalus to be a membranous septum of the aqueduct of Sylvius, a condition for which few reports exist.