NPPB and lymphoma: NT-proBNP levels were 301.0 pg/ml in the case of lymphoma, 357.5 (138.8, 803.5) pg/ml in cases of lung cancer, 705.5 (178.0, 1082.0) pg/ml in prostatic cancer, and 291.0 (85.4, 931.0) pg/ml in all the other patients with malignancies, showing no differences among them (p = 0.720 for the comparison between the last 3 groups).