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Tilted telephone receiver sign

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


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Article information

rID: 75039
Section: Signs
Synonyms or Alternate Spellings:

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