Metastatic Prostate Cancer with a Testicular Mass: Rare Metastasis or Unexpected Primary Germ Cell Tumor?
We describe the case of a 78- year- old man with metastatic hormone- sensitive prostate adenocarcinoma who was diagnosed with a metachronous right testicular seminoma during follow- up. He initially presented with low back pain, weight loss, and a PSA level of 909 ng/mL. Prostate biopsy revealed a Gleason 9 (4+5)(4+5)...