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Pineoblastoma : Chromogranin

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Pineal parenchymal tumors show immunoreactivity for a variety of neuroendocrine markers such as neurofilament, synaptophysin, neuron-specific enolase, chromogranin (shown here), and CD56. The immunoreactivity in pineoblastomas is variable, heterogenous, and may even be absent. Courtesy of: Dr. Luciano de Souza Queiroz, Dept. of Pathology, Faculty of Medical Sciences, State University of Campinas (UNICAMP), Campinas, São Paulo State, BRAZIL. Additional images are here.

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