Fig. 5.

3D penis reconstruction using ROIs highlighted in the original MRI (fig. 4). This penis was externalized upon dissection, so the IP is protracted (not shown) and the EP has been removed. Note, the CCU and MUMP ridge extend further proximally than shown (as can be seen in section histology). The gradients between the proximal most aspects of these structures and the surrounding tissue were too ambiguous to interpret and, thus, are not fully annotated in the color code of the MRI. MUMP CC = MUMP corpora cavernosa.