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What is the immunohistochemical appearance of solitary fibrous tumors of the dura?
CD34: positive; vimentin : positive; EMA: usually negative.
What is the characteristic appeareance on T2 weighted secuences?
The "yin-yang" appearance.
Can you think of a few differentials for this tumor?
Meningioma; schwannoma; dural metastases.
Histopathology report of the incisional biopsy confirming the diagnosis of a solitary fibrous tumour of the dura.