I would say it does depend on the diagnosis of granulocytic sarcoma. If the predominant cell is a blast cell, this must be regarded as blastic phase CML and treated accordingly, with TKI, cytotoxic drugs and perhaps radiotherapy. The term has also been used, perhaps erroneously for what is merely a collection of fully differentiated cells of the granulocytic series. Here one might make a case for calling it chronic phase, but I still would be dubious.
John Goldman