Hello doctor, I had a viral infection before two months with fever for five days and cough and increased mucus production for more than two weeks. On a follow-up visit with a PCP, I was given antibiotics for five days Azithromycin and antihistamine Levocetirizine to make sure there is no secondary infection and to help with mucus (allergies were also suspected). I feel great by now for a few weeks and currently, I am not taking anything. I have attached my blood work done yesterday, including CBC and peripheral blood smear. As you can see, although my overall WBC count is normal, there is a relative lymphocytosis (42%, up from 40% two weeks ago). The blood smear is normal. My hs-CRP is 0.9 and ESR (denoted as VHS) is at 2 mm/hr. What can cause this relative elevation in lymphocytes? Should I be concerned about leukemia or lymphoma?
Hello. I have seen your attached report. (attachment removed to protect patient identity). The lymphocytes are slightly elevated. The lymphocytosis seems most likely to be due to previous viral infection of the upper respiratory tract. The peripheral smear report not showing any abnormality. So you need not worry about any leukemia or lymphoma according to provided history and reports. Do not worry. You can repeat your CBC (complete blood count) after a week. The count of lymphocytes will fall within range after a week mostly. I hope this helps.