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Difference between revisions of "Meningioma"
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| Micro = whorled appearance, calcification - [[psammoma bodies|psammomatous]], +/-[[nuclear pseudoinclusions]] | | Micro = whorled appearance, calcification - [[psammoma bodies|psammomatous]], +/-[[nuclear pseudoinclusions]] | ||
| Subtypes = Grade I (meningothelial, fibrous, transistional, psammomatous, angiomatous, microcystic, secretory, lymphoplasmacyte-rich, metaplastic), Grade II (invasive, clear cell, chordoid), Grade III (papillary, rhabdoid) | | Subtypes = Grade I (meningothelial, fibrous, transistional, psammomatous, angiomatous, microcystic, secretory, lymphoplasmacyte-rich, metaplastic), Grade II (invasive, clear cell, chordoid), Grade III (papillary, rhabdoid) | ||
| LMDDx = [[schwannoma]], [[solitary fibrous tumour]], others | | LMDDx = [[schwannoma]], [[solitary fibrous tumour]], [[hemangiopericytoma]], others | ||
| Stains = | | Stains = | ||
| IHC = EMA +ve, keratins usu. -ve, CD34 -ve/+ve, S-100 -ve (usu.), PR +ve (-ve in more aggressive ones) | | IHC = EMA +ve, keratins usu. -ve, CD34 -ve/+ve, S-100 -ve (usu.), PR +ve (-ve in more aggressive ones) | ||