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Axial non-contrast
Axial C+ arterial phase
Axial bone window
Axial bone window
CT
Axial non-contrast
Axial C+ arterial phase
Axial bone window
Axial bone window
CT scan of the petrous bone demonstrates a right sided CPA mass, with trumpeting of the porus acousticus suggestive of an acoustic schwannoma. Left IAC shown for comparison.