pneumoventricle

pneu·mo·ven·tri·cle

(nū'mō-ven'tri-kĕl), Air in the ventricular system of the brain; occurs as a complication of a fracture of the skull that passes through the accessory nasal sinuses.

pneumoventricle

(nū″mō-vĕn′trĭ-k'l) [″ + L. ventriculus, little belly] Air accumulation in the cerebral ventricles.