Anaplastic ependymoma, light micrograph. Classic ependymoma is a well-circumscribed and a cellular neoplasm with sheet-like growth pattern. The tumour cells are frequently arranged around blood vessels creating perivascular pseudorosettes. Vast majority of ependymomas are infratentorial and involve the 4th ventricle, mostly in children. The diagnosis of anaplastic ependymoma (WHO Grade III) requires hypercellularity, cytologic atypia, increased mitotic activity, and microvascular proliferation as shown in this image. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / WEBPATHOLOGY |
Bildgröße: | 4096 px × 3200 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |