Figure 2From: Polycythemia vera revealed via a bladder tumor in a patient with erectile dysfunction: a case report Subjective fluctuations of the erectile response related to the hematuria episodes and correlated with hemoglobin levels. The x- axis represents the hematuria episodes while the y-axis represents the erectile response (red curve) with hemoglobin levels (blue curve). HE = hematuria episode; Hb = hemoglobin.Back to article page