This is in agreement with one study where high levels of ADA were reported in some cases of parapneumonic effusions and adenocarcinoma.27 Lee et al.28 measured ADA levels in non-tuberculous lymphocytic effusion and found that ADA values were above the cut-off of 40 units/L in one complicated parapneumonic effusion and two cases of lymphoma. The gene discussed is ADA; the disease is lymphoma.