Visual representation of the relationship between number of CMBs and significant risk factors. (A) Platelet count at time of MRI. (B) Nadir platelet count (lowest recorded). (C) Disease duration. (D) Organ bleeding score. Each data point corresponds to a different patient with ITP. For better visualization, patients without CMBs were labeled with a different shape, the outlier patient with 56 bleeds was excluded, and the range of panel D was set to a maximum of 8 (not all patients shown in panels A-C had organ bleeding scores).