True Ependymal Rosettes in Ependymoma

The microscopic appearance of ependymomas is dominated by the presence of radially-arranged tumor cells forming rosettes (black arrows), which are named for their resemblance to the flower-like architecture of rose windows in gothic cathedrals.  The perivascular pseudorosette, characterized by tumor cells radially arranged around a central vessel, is more common by far, but it is not specific to... Continue Reading →

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