What are the cross sectional imaging features of penile cancer?
A heterogeneous enhancing soft tissue penile mass is seen, most commonly occurring in the glans penis. Tumor invasion of subepithelial connective tissue indicates T1 stage disease. Tumor invasion of the corpora may occur, indicating T2 stage disease, which is best detected by loss of the normal low T2-weighted signal intensity tunica albuginea on MRI. Tumor invasion of the urethra or of adjacent organs may also be seen, indicating T3 and T4 stage disease, respectively. Regional lymphadenopathy, involving the inguinal or iliac nodal stations, and distant metastases, most commonly involving the lungs, liver, bone marrow, and nonregional lymph nodes, may also be visualized on CT or MRI