In 1921 Dandy reported a case of hydrocephalus caused by obstruction of outflow of CSF from the fourth ventricle.
12.
Oedema may be found in the regions surrounding the third ventricle, and fourth ventricle, also appearing petechiae and small hemorrhages.
13.
From here, the CSF passes through the interventricular foramina to the third ventricle, then the cerebral aqueduct to the fourth ventricle.
14.
The fourth ventricle narrows at the obex ( in the caudal medulla ), to become the central canal of the spinal cord.
15.
This variation in ventricle size is indicative of a blockage in the aqueduct because it lies between the third and fourth ventricles.
16.
The structure is also called the "'lateral aperture of the fourth ventricle "'or the "'foramen of Luschka "'after anatomist Hubert von Luschka.
17.
If the foramina of the fourth ventricle or the cerebral aqueduct are blocked, cereobrospinal fluid ( CSF ) can accumulate within the ventricles.
18.
He discovered the foramen Magendie, the opening in the roof of the fourth ventricle, but mistakenly believed that CSF was secreted by the pia mater.
19.
From the fourth ventricle, the fluid passes through three openings to enter the subarachnoid space these are the median aperture, and the lateral apertures.
20.
Luckily they found a way, but unfortunately this meant Dia having two vp shunts, one in the cyst and another one in the fourth ventricle.
