Acoustic schwannoma
Updates to Case Attributes
Typical imaging features of an acoustic schwannoma: extension and expansion of the IAC (ice-cream cone appearance), cystic degeneration, and likely micro haemorrhagic foci.
MICROSCOPIC DESCRIPTION: The the sections show a moderately cellular schwannoma. It mainly contains Antoni A areas with fascicles of spindle cells. There is focal palisading but Verocay body formation is inconspicuous. The tumour cells show no significant nuclear pleomorphism. There are abundant foamy macrophages in the stroma. No evidence of malignancy is identified.
DIAGNOSIS: Brain brain tissue: Schwannomaschwannoma.
-<p>Typical imaging features of an <a title="Acoustic schwannoma" href="/articles/acoustic-schwannoma-1">acoustic schwannoma</a>: extension and expansion of the IAC (ice-cream cone appearance), cystic degeneration, and likely micro haemorrhagic foci. </p><p><strong>MICROSCOPIC DESCRIPTION:</strong> The sections show a moderately cellular schwannoma. It mainly contains Antoni A areas with fascicles of spindle cells. There is focal palisading but Verocay body formation is inconspicuous. The tumour cells show no significant nuclear pleomorphism. There are abundant foamy macrophages in the stroma. No evidence of malignancy is identified.</p><p><strong>DIAGNOSIS:</strong> Brain tissue: Schwannoma.</p>- +<p>Typical imaging features of an <a href="/articles/acoustic-schwannoma-1">acoustic schwannoma</a>: extension and expansion of the IAC (ice-cream cone appearance), cystic degeneration, and likely micro haemorrhagic foci. </p><p><strong>MICROSCOPIC DESCRIPTION:</strong> the sections show a moderately cellular schwannoma. It mainly contains Antoni A areas with fascicles of spindle cells. There is focal palisading but Verocay body formation is inconspicuous. The tumour cells show no significant nuclear pleomorphism. There are abundant foamy macrophages in the stroma. No evidence of malignancy is identified.</p><p><strong>DIAGNOSIS:</strong> brain tissue: schwannoma.</p>
Updates to Study Attributes
There is an ill-defined hypoattenuating mass obliterating the left pontocerebellar angle with extension into and apparent enlargement of the left internal acoustic meatus. Elsewhere brain involveAge-related changes usually observed in the age groupare also present.
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