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Figure 5: Pathology photomicrographs of case depicted in [Figure 3] showing lobules of round tumor cells displaying fine chromatin and mild atypia (a, H and E, ×200). Tumor cells are diffusely synaptophysin positive (b, immunoperoxidase, ×100) and GFAP negative (c, imunoperoxidase, ×100) with moderate proliferation (d, MIB-1, immunoperoxidase, ×100). A diagnosis of pineal parenchymal tumor with intermediate differentiation (PPTID) was made

Figure 5: Pathology photomicrographs of case depicted in [Figure 3] showing lobules of round tumor cells displaying fine chromatin and mild atypia (a, H and E, ×200). Tumor cells are diffusely synaptophysin positive (b, immunoperoxidase, ×100) and GFAP negative (c, imunoperoxidase, ×100) with moderate proliferation (d, MIB-1, immunoperoxidase, ×100). A diagnosis of pineal parenchymal tumor with intermediate differentiation (PPTID) was made