Stage IIIB includes: T3-4, N0, M0, PSA: Any, Grade Group 1-4; T3: Prostate cancer with extraprostatic tumor that is not fixed or does not invade adjacent structures. T4: Prostate cancer in which the tumor is fixed or invades adjacent structures other than seminal vesicles such as external sphincter, rectum, bladder, levator muscles, and/or pelvic wall. N0: Prostate cancer with no positive regional nodes. M0: Prostate cancer without evidence of distant metastasis. Grade Group 1: Gleason Score 6 or less, Gleason Pattern 3 or less+3. Grade Group 2: Gleason Score 7, Gleason Pattern 3+4. Grade Group 3: Gleason Score 7, Gleason Pattern 4+3. Grade Group 4: Gleason Score 8, Gleason Pattern 4+4. (AJCC 8th ed.) [from NCI]