RESUMO
Priapism is defined as an erection that persists beyond four hours, lasting beyond or unrelated to sexual stimulation (Salonia et al., 2014). Because the risk of ischemic damage and impotence is high with priapism (35%), management guidelines are directed towards rapid treatment of this condition (Salonia et al., 2014). This report describes the rare case of an 18-year-old male who presented to the Emergency Department (ED) three times with recurrent and worsening episodes of sustained penile erections. On the patient's third visit, he presented with priapism of greater than six-hour duration that was found to be the result of chronic myeloid leukemia. Clinician awareness of the diagnostic semantics and differential diagnosis surrounding priapism is pivotal in its urgent management.