Acute leukemia
Myelodysplastic syndrome, myelofibrosis<unk> 
Infiltrative disease (e.g. lymphoma, multiple myeloma, metastatic carcinoma)
Paroxysmal nocturnal hemoglobinuria
Drugs/treatments (*drugs more commonly associated with pancytopenia)
Bone marrow irradiation*
Chemotherapy*(especially anthracyclines, methotrexate)
Anti-inflammatories (rituximab*, sulfasalazine*, colchicine, azathioprine, methotrexate)
Antimicrobials (chloramphenicol, ganciclovir, penicillin G*, dapsone*, quinine
Thiomides (propylthiouracil*, methimazole*, carbimazole)
Antipsychotics (clozapine*, olanzapine
Procainamide*
Cyclophosphamide
Antiepileptics ([[phenytoin], carbamazepine, phenobarbital)
Infection
Tuberculosis
AIDS
Leishmaniasis, brucellosis, histoplasmosis.
Viruses causing<unk>  (viral hepatitis, Epstein-Barr virus, HIV, parvovirus B19)
Systemic lupus erythematosus
Hypersplenism
Acute radiation syndrome
Bone marrow irradiation*
Chemotherapy*(especially anthracyclines, methotrexate)
Anti-inflammatories (rituximab*, sulfasalazine*, colchicine, azathioprine, methotrexate)
Antimicrobials (chloramphenicol, ganciclovir, penicillin G*, dapsone*, quinine
Thiomides (propylthiouracil*, methimazole*, carbimazole)
Antipsychotics (clozapine*, olanzapine
Procainamide*
Cyclophosphamide
Antiepileptics ([[phenytoin], carbamazepine, phenobarbital)
Tuberculosis
AIDS
Leishmaniasis, brucellosis, histoplasmosis.
Viruses causing<unk>  (viral hepatitis, Epstein-Barr virus, HIV, parvovirus B19)
Aplastic anemia
Acute leukemia
Polycythemia vera
Myelodysplastic syndrome, myelofibrosis
Myelodysplastic syndrome
Myelofibrosis
Infiltrative disease 
Acute myeloid leukemia