The man was diagnosed with Acute Promyelocytic Leukemia (APL), the M3 subtype of Acute Myeloid Leukemia (AML).

Mystery cells are fun to identify and we will do our best in finding more and again engage your interest. In the meantime you may find this recently published article in Nature interesting; it’s about the Role of the Promyelocytic Leukaemia protein in cell death regulation.