THE area postrema in the cat is a region which protrudes from, the dorsal surface of the medulla into the fourth ventricle. It begins in the midline ventral to the obex and passes rostrally as a ...

A 44 year-old woman presented with headaches, worse when lying down. Her neurological examination was normal. Non-Communicating Hydrocephalus: Axial CT scans. Note the prominent enlargement of the ...

A 32 year-old man with a ventriculoperitoneal shunt presented with headaches and progressive confusion. Non-Communicating Hydrocephalus: T1-weighted with gadolinium coronal MRIs. Note the prominent ...