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 images3.
- 1. Barkovich A. James. Pediatric neuroimaging. Lippincott Williams & Wilkins, 2005. ISBN: 0781757665, 9780781757669.
- 2. Van beek EJ, Majoie CB. Case 25: Joubert syndrome. Radiology. 2000;216 (2): 379-82. Radiology (citation) - Pubmed citation
- 3. Sattam SL. Nahla A A.Yasser RF. Joubert syndrome: accuracy of neuro-radiological indings. Journal of Pediatric Neurology, Vol. 2, No. 1, 2004, pp. 33-37
Synonyms & Alternative Spellings
|Synonyms or Alternative Spelling||Include in Listings?|
|Bat wing fourth ventricle||✗|
|Bat wing sign||✗|
|batwing fourth ventricle||✓|