Histopathology:
Histopathology showed tubular and cribriform proliferation of cuboidal
cells as an epithelium with granular amphophilic cytoplasm with round
dark blue nuclei. There was no evidence of necrosis, atypia or increased
mitotic activity.
The tumor cells demonstrated positive staining for synaptophysin, and
cytokeratin (AE1/AE3) also display patchy positivity for CD 56 and EMA
and No sustentacular cells were identified are negative for S100. The
tumor had a low proliferation index of 1%.