Findings:
The vestibular-cochlear apparatus and internal acoustic canals have a normal appearance. No structural cochlear abnormalities.
The facial and vestibulocochlear nerves have a normal appearance, with no focal lesion or signal abnormality. No CPA mass lesion.
The trigeminal and abducens nerves are normal.
There is a vascular loop of the anterior inferior cerebellar artery (AICA) in both CPA, entering and reaching the medial part of the right internal auditory canal (type II) and the lateral part of the left internal auditory canal (type III).
No intra- or extra-axial mass lesion or collection is identified. The ventricles and sulcal spaces are within normal limits. There is no midline shift.
The brain parenchyma is unremarkable.
The orbits, paranasal sinuses and mastoid air cells are clear.
No bony abnormality is seen.
Conclusion:
No retrocochlear pathology, no CPA mass lesion.
AICA loop entering the internal auditory canals bilaterally (type II on the right and type III on the left).