PT  - JOURNAL ARTICLE
AU  - L T Coleman
AU  - R A Zimmerman
AU  - L B Rorke
TI  - Ventriculus terminalis of the conus medullaris: MR findings in children.
DP  - 1995 Aug 01
TA  - American Journal of Neuroradiology
PG  - 1421--1426
VI  - 16
IP  - 7
4099  - http://www.ajnr.org/content/16/7/1421.short
4100  - http://www.ajnr.org/content/16/7/1421.full
SO  - Am. J. Neuroradiol.1995 Aug 01; 16
AB  - PURPOSE To determine the appearance of the ventriculus terminalis of the conus medullaris and the frequency with which it is seen on MR. METHODS Four hundred eighteen normal spine MR examinations were reviewed. RESULTS Eleven (2.6%) of 418 children, all younger than 5 years of age, demonstrated an ovoid, nonenhancing, smooth dilation of the central canal within the conus medullaris. Averaged volume of the oblate spheroid was 0.18 cm3. Fluid within the cavity behaved as cerebrospinal fluid on all pulse sequences, and there was no abnormal signal in the cord tissue surrounding the cavity. CONCLUSION Asymptomatic localized dilatation of the ventriculus terminalis is a normal developmental phenomenon that can be seen on MR.