Figure 3From: A supratentorial primitive neuroectodermal tumor presenting with intracranial hemorrhage in a 42-year-old man: a case report and review of the literature The histological findings were compatible with primitive neuroectodermal tumor. (a) Photomicrograph (original magnification, ×100; hematoxylin-eosin stain) demonstrating small tumor cells with round to oval hyperchromatic nuclei and scant cytoplasm with distinct outline (white arrows). (b) Photomicrograph (original magnification, ×400; immunohistochemical stain) showing intense positivity for synaptophysin (black arrows).Back to article page