Fig. 3
From: Primary neuroendocrine tumor of the pineal gland: a case report
Photomicrographs of the tumor tissue. A The tumor consists of uniform round cells arranged in diffuse sheets and trabeculae. Cells contain minimal cytoplasm and indistinct nucleoli. B Immunohistochemistry. Tumor cells stain positive for CK 8/18. C Immunohistochemistry. Tumor cells stain positive for NSE. D Immunohistochemistry. Tumor cells stain positive for synaptophysin