Clivus ependymoma.
A 8-month-old girl had an ependymoma in the clivus, 2 X 6 cm in size, connected with the fourth ventricle by a cord of tissue 0.5 cm thick. There were no indications to make us suspect the origin of the tumour in the fourth ventricle, or that it was a case of ependymoma.
Angiography↗