DEAR DR. ROACH: I am 75 and have had Waldenstrom macroglobulinemia for three years, which has been treated with ibrutinib (Imbruvica) and is now in remission. A side effect of Imbruvica is bleeding, and it requires the drug to be withheld before procedures.
I need a colonoscopy and a prostate biopsy now. Ideally, how long before and after the procedures should Imbruvica be withheld? If the procedur…