This patient went on to have a resection.
MICROSCOPIC DESCRIPTION: The sections show multiple fragments of tumour, comprising spindle cells forming loose fascicles and sheets, with occasional foci of nuclear palisading (Verocay body formation). There are scattered thick-walled vessels, and there are extensive areas of foam cell and lymphocytic infiltration within the tumour. Foci of haemosiderin deposition are also noted. There is no necrosis and mitotic activity is minimal. In some foci, tumour cell nuclei show some hyperchromasia and atypia, (ancient change).
FINAL DIAGNOSIS: Right acoustic schwannoma.