hi, Your husband has lymphocytosis means high lymphocytes count and high monocytes count. it can be seen in simple viral infection to lymphoma and leukemia. and causes of high esr are so many like anemia, inflammation, autoimmune disorder, Tuberculosis, Malignancies, Paraproteinemia etc, so you should consult your doctor, you need to know what is the morphology of lymphocytes, whether it is normal, reactive or atypical, go for flow cytometry study if required. that will give correct diagnosis, then take treatment accordingly. thanks for using health care magic.