Tilted telephone receiver sign

Last revised by Roland Warner on 14 Mar 2020

The tilted telephone receiver sign (TTRS) has been described as a specific imaging feature of PHACES syndrome in fetal MRI 1

On the coronal plane, the TTRS sign is described as:

  • upward displaced unilateral hypoplastic cerebellar hemisphere;
  • asymmetric dilated 4th ventricle connected to as ipsilateral retrocerebellar cyst
  • elongated oblique connection between the hemispheres formed upwardly rotated and deviated vermis merging with the contralateral cerebellar peduncle


ADVERTISEMENT: Supporters see fewer/no ads

Updating… Please wait.

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

 Thank you for updating your details.