Fig. 2
From: A rare case report of pituicytoma with biphasic pattern and admixed with scattered Herring bodies
a The hypocellular area (top) and hypercellular area (bottom) showed apparent geographical separation. b In the hypocellular area, the spindle cells had blunted-ended to irregular nuclei with abundant, palely eosinophilic, fibrillary cytoplasm, and admixed with scattered Herring bodies (arrow). c In the hypercellular zone, a large number of pseudorosettes reminiscent of ependymoma. d Strong and diffuse nuclear staining for TTF1 in the hypocellular and hypercellular areas