June 2, 2020
Evan Y. Yu, MD


Case: A 66-Year-Old Man with Metastatic Castration-Resistant Prostate Cancer

Initial presentation

  • A 66-year-old man presented with increasing difficulty walking and sleeping on his back due to lower back and hip discomfort
  • PMH: hypertension, medically controlled; no known family history of cancer
  • PE: DRE revealed a nodular prostate; otherwise unremarkable

Clinical workup

  • Biopsy with TRUS showed adenocarcinoma of prostate
    • Stage T2N0M0
    • Grade group 4
    • Expected survival > 5 years
  • Germline testing: MLH1, MSH2, MSH6, PMS2, BRCA1/2, ATM, PALB2 and CHEK2
  • Chest/abdominal/pelvic CT scan showed no evidence distant metastases or lymph node involvement
  • Bone scan was negative
  • PSA 26 ng/mL

Treatment and Follow-Up

  • EBRT for 8 weeks + neoadjuvant concurrent, and adjuvant ADT for 2 years
  • At 6 months post-ADT follow-up; PSA 5.9 ng/mL
  • At 12 months follow-up:
    • Patient reported continued back discomfort, difficulty walking and loss of appetite
    • PSA 16 ng/mL
    • Bone scan showed multiple lesions in the right femur and pelvis
    • Abiraterone + ADT was initiated for 1 year
  • At subsequent follow-up:
    • Patient complained of increased bone pain in right femur
    • PSA 18.6 ng/mL
    • Abiraterone was ceased; ADT continued
    • Treatment with radium-223 dichloride was initiated; 6 infusions completed and well-tolerated at post-infusion follow-up