Lateral apertures (of Luschka)

The lateral apertures (of Luschka) (also known as the foramina of Luschka) are two of the foramina in the ventricular system and link the fourth ventricle to the cerebellopontine cistern. Together with the median aperture (of Magendie) they comprise two of the three sites that CSF can leave the fourth ventricle and enter the subarachnoid space.

They are located al the lateral-most aspect of the fourth ventricle and drain into the subarachnoid space at the cerebellopontine angle cistern immediately posterior to the root of the glossopharyngeal (IX) nerve.

Related pathology

Choroid plexus can protrude through one or both of the foramina and simulate subarachnoid hemorrhage or a cerebellopontine angle (CPA) mass.

When the protruding choroid plexus is calcified, it is known as the Bochdalek flower basket.

Anatomy: Brain
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Article information

rID: 5861
Section: Anatomy
Tag: stub, stub, refs
Synonyms or Alternate Spellings:
  • Lateral aperture of Luschka
  • Lateral apertures of Luschka
  • Foramen of Luschka
  • Foramina of Luschka

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Cases and figures

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  • Figure 3: diagram of ventricular system
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