My dad, just this me that he's started to see black specks or sediment in his urine. He said it just started this past few days while we've been vacationing together. Any idea what this could be?
He's stage 4 Mets to nearby lymph node. Original PSA 257, down to .07. Last PSA was .13. Had chemo in June 2015 and has been on hormone therapy ever since.