Fig. 3
From: A huge cerebral parenchymal meningioma in sylvian fissure: case report and literature review
Hematoxylin and eosin staining (A and B) of the tumor consisted of polygon-shaped cells with a transparent cytoplasm rich in glycogen, with Ki-67 labeling index of 15% (C). The result of periodic acid-Schiff staining (PAS) was positive (D), and Trichrome staining revealed rich interstitial collagen fibers stained blue (E). Cells of the tumor were also positive for SSTR2 (F), which is a characteristic indicator for meningiomas. These findings suggested a clear cell meningioma