Bat wing 4th ventricle

Bat wing 4th ventricle sign refers to the morphology of the fourth ventricle in the Joubert anomaly and related syndromes. The absence of a vermis with apposed cerebellar hemispheres give the fourth ventricle an appearance reminiscent of a bat with its wings outstretched.

It is best demonstrated on axial imaging plane and could be easily missed on sagittal and coronal images 3.

Edit Article Share Article

Article Information

rID: 8242
Section: Signs
Tag: cardiology
Synonyms or Alternate Spellings:
  • Bat wing fourth ventricle
  • Bat wing sign
  • Drag
    Fruit bat
    Figure 1: fruit bat
    Drag here to reorder.
  • Drag
    Case 1
    Drag here to reorder.
  • Drag
    Case 2
    Drag here to reorder.
  • Drag
    Case 3
    Drag here to reorder.
  • Updating… Please wait.


    Error Unable to process the form. Check for errors and try again.

    Alert_accept Thank you for updating your details.