Acoustic schwannoma

Case contributed by Ammar Haouimi
Diagnosis almost certain


Left-sided hearing loss.

Patient Data

Age: 65 years
Gender: Female

Small well-defined left cerebellopontine angle mass with intracanalicular extension. It elicits an isosignal to the normal brain on T1 and T2, high signal FLAIR with vivid heterogeneous enhancement on postcontrast sequences. No mass effect on the brainstem or middle cerebellar peduncle.

Case Discussion

MRI features of a left CPA mass with intracanalicular extension most consistent with an acoustic neuronal.

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