DEAR DR. ROACH: My 73-year-old wife has been diligent in getting her mammograms done, plus blood tests and doctor’s visits every three months. In November 2021, she came down with what seemed like a very bad cold that was actually confirmed by X-ray to be pneumonia. After two rounds of different antibiotics, she had lost 35 pounds, and it left her with weakness and a lingering cough. A CT scan lat…