The lateral aperture, lateral aperture of fourth ventricle or foramen of Luschka (after anatomist Hubert von Luschka)Hubert Von Luschka
at whonamedit.com is an opening at the lateral extremity of either

lateral recess The lateral recess or lateral recess of fourth ventricle, is a projection of the fourth ventricle which extends to the lateral border of the brainstem at the pontomedullary junction. At this point the fourth ventricle is at its widest. The late ...

of the

fourth ventricle The fourth ventricle is one of the four connected fluid-filled cavities within the human brain. These cavities, known collectively as the ventricular system, consist of the left and right lateral ventricles, the third ventricle, and the fourth ...

opening anteriorly into (sources differ) the pontine cistern/ lateral cerebellomedullary cistern at cerebellopontine angle. A tuft of

choroid plexus The choroid plexus, or plica choroidea, is a plexus of cells that arises from the tela choroidea in each of the ventricles of the brain. Regions of the choroid plexus produce and secrete most of the cerebrospinal fluid (CSF) of the central ...

commonly extends into the lateral aperture, partially obstructing CSF flow through this aperture. The opening of the lateral aperture occurs just lateral to cranial nerve VIII, and proximally to the flocculus of cerebellum.

References

Ventricular system {{Neuroanatomy-stub