PDGFRA and polycythemia: The other samples belonged to patients with MLN with a PDGFRα rearrangement (1 case), lymphoid neoplasms (5 cases: 1 ALL, 1 CLL, 1 hairy cell leukemia, and 2 NHL), or reactive disorders/non-conclusive final diagnoses (75 cases of thrombosis, polycythemia, eosinophilia, anemia).