TY - JOUR T1 - Spontaneous Ventriculostomy: Report of Three Cases Revealed by Flow-Sensitive Phase-Contrast Cine MR Imaging JF - American Journal of Neuroradiology JO - Am. J. Neuroradiol. SP - 1647 LP - 1652 VL - 20 IS - 9 AU - Alex Rovira AU - Jaume Capellades AU - Elisenda Grivé AU - Maria A. Poca AU - Salvador Pedraza AU - Juan Sahuquillo AU - Alfonso Rodríguez-Baeza Y1 - 1999/10/01 UR - http://www.ajnr.org/content/20/9/1647.abstract N2 - Summary: Spontaneous ventriculostomy is a rare condition that occurs with the spontaneous rupture of a ventricle, resulting in a communication between the ventricular system and the subarachnoid space. Three cases of spontaneous ventriculostomy through the floor of the third ventricle that occurred in cases of chronic obstructive hydrocephalus are presented. The communication was identified via flow-sensitive phase-contrast cine MR imaging. Spontaneous ventriculostomy is probably a result of a rupture of the normally thin membrane that forms the floor of the third ventricle and, with long-standing obstructive hydrocephalus, creates an internal drainage pathway that spontaneously compensates for the hydrocephalus. ER -