Planum sphenoidale meningioma
Progressively increasing headache and binocular visual loss for one year.
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CT scan shows an extra axial soft tissue mass lesion with extensive peritumoral brain edema which surprisingly extends to the right hemisphere. There is also extension to the sellar region.
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The patient underwent a bifrontal craniotomy, with gross near total resection of the tumor. Histopathology confirmed the mass as meningioma. In my own experience this form of edema, in the floor of the anterior cranial fossa, is only due to the meningioma.