Figure 1From: Supratentorial primitive neuroectodermal tumor in an adult: a case report and review of the literature Histopathology. Photomicrographs of tumor showing small, round, and undifferentiated cells with scant cytoplasm and round or oval nuclei with dense chromatin or prominent nucleoli, forming structures reminiscent of Homer-Wright rosettes (black arrowheads), as well as mitosis.Back to article page