A 54-year-old male presented with shortness of breath and was diagnosed with pulmonary emboli. Laboratory studies revealed hemolytic anemia. Flow cytometry showed a prominent white blood cell clone without CD59 in 85% (NV 0-3.0) and red blood cells with 8.5% CD59 absence (NV 0-3.0) confirming a diagnosis of paroxysmal nocturnal hemoglobinuria. Eculizumab was started to decrease the possibility ...
