Stage III includes: (T3a, N0, M0); (T3b, N0, M0); (T4a, N0, M0). T3a: Tumor microscopically invades perivesical tissue. T3b: Tumor macroscopically invades perivesical tissue (extravesical mass). T4a: Tumor invades prostatic stroma, uterus, vagina. N0: No regional lymph node metastasis. M0: No distant metastasis. (AJCC 6th and 7th eds.) [from
NCI]