Hello,
If you have a normal white blood count but low neutrophil, the increased percentage of lymphocytes is not considered true elevation and is named relative lymphocytosis. This is true as long as the absolute lymphocyte number is not greater than 4000/mcl.
So, your absolute lymphocyte count is considered truly high since it exceeded 4000/mcl . Your absolute neutrophil count is within the normal range although the percentage is less than normal. Neutropenia is defined by an absolute neurophilic count less than 1500 cells/mm3.
So, your main problem is absolute lymphocytosis with a total while blood cells count in the high normal.
Common causes of lymphocytosis include viral (e.g. influenza) and bacterial infections. That is why your doctor wanted to exclude viral causes by the tests he recommended since it is a common cause for lymphocytosis. Your CRP is also suggestive of inflammatory condition but this is not specific and is not that high to allow any conclusion. If you have suffered from any recent illness like sore throat, sinusitis, dental or oral infection or inflammation this could be the cause of these results.
In addition enlarged nodes are commonly seen in this part of the body due to inflammations and infections in the oral cavity and nasopharynx. After recovery from infections they regress in size but remain palpable. They are non specific if small <1cm, mobile, soft to firm and are not increasing in size or number.
However, serious causes like
chronic lymphocytic leukemia should be excluded especially in very high lymphocytic counts. Blood smear (blood film seen under microspcope) is very helpful in the diagnosis. If
leukemia is suspected bone marrow examination should be done.
I would advise you to follow up with your doctor. Only by thorough history and physical examination the proper diagnosis can be reached.
Please keep us updated.
Best regards.
This answer does not substitute for direct medical consultation.
Dr. Safaa Mahmoud.
MB BCh, MSc Internal Medicine. MD Medical Oncology.
PhD Experimental Medicine and Biochemical Science.