“Last week, President Joe Biden was seen for a new finding of a prostate nodule after experiencing increasing urinary symptoms,” his personal office said in a statement. “On Friday he was diagnosed with prostate cancer, characterized by a Gleason score of 9 (Grade Group 5) with metastasis to the bone.”

Prostate cancer experts say that Mr. Biden’s diagnosis is serious, and that once the cancer has spread to the bones — where it tends to go — it cannot be cured.

Tapper's book on Biden's cognitive decline was expected to draw ire from the right, but heated backlash has come from liberals.