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Do not know the areas of the stains. Seems the last several areas are not epithelial cells. cytomorphologic features look like histiocytes, but CD68 neg does not support it. Is ki67 true positive for these cells? Or Ki67 just stains soem lymphocytes.
Strange case????
They are not like classic granular cell tumor. Try to stain S100 ???
Interested to know your final result.