title: Combined autoimmune cytopenias.
abstract: BACKGROUND
  Autoimmune neutropenia (AIN) can occur in association with autoimmune hemolytic anemia (AIHA) and/or immune thrombocytopenic purpura (ITP), although these associations have not been studied in detail.
  
  
  RESULTS
  Twenty cases of AIN were found in a group of 55 adults with unexplained neutropenia over a five-year period. Eight subjects with AIN had an associated AIHA and/or ITP (AIN+ITP, n = 2; AIN+AIHA, n = 2; AIN+ITP+AIHA, n = 4). Thorough investigations identified no underlying disease in four patients, and none has appeared during follow-up. Of the other 4, one was found to have been suffering from systemic lupus erythematosus when the combined immunocytopenia was diagnosed, one patient from idiopathic myelofibrosis, one from a combined variable immunodeficiency and the other from disseminated tuberculosis. These last three conditions, while sometimes associated with autoimmune cytopenias, has not been previously reported together with combined immunocytopenias. All patients responded to immunosuppressors, although severe infectious complications occurred in two, leading to death from Pneumocystis carinii pneumonia and to irreversible neurologic damage from Listeria monocytogenes meningitis, respectively.
  
  
  CONCLUSIONS
  We conclude that combined autoimmune cytopenias are frequently observed in patients with AIN, and a thorough search for associated conditions can lead to unsuspected diagnoses.
authors.affiliation: Hemotherapy Service, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain.
authors.forename: R
authors.initials: R
authors.lastname: Martino
authors.forename: E
authors.initials: E
authors.lastname: Muñiz-Díaz
authors.forename: M
authors.initials: M
authors.lastname: Arilla
authors.forename: M
authors.initials: M
authors.lastname: Ibáñez
authors.forename: A
authors.initials: A
authors.lastname: Altés
authors.forename: C
authors.initials: C
authors.lastname: Guanyabens
authors.forename: P
authors.initials: P
authors.lastname: Madoz
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000744:Anemia, Hemolytic, Autoimmune / Q000453:epidemiology*; D001327:Autoimmune Diseases / Q000453:epidemiology*; D015897:Comorbidity; D003924:Diabetes Mellitus, Type 2 / Q000453:epidemiology; D017809:Fatal Outcome; D005260:Female; D005335:Fever of Unknown Origin / Q000209:etiology; D006801:Humans; D007153:Immunologic Deficiency Syndromes / Q000453:epidemiology / Q000276:immunology; D008180:Lupus Erythematosus, Systemic / Q000453:epidemiology; D008297:Male; D008584:Meningitis, Listeria / Q000209:etiology; D008875:Middle Aged; D009503:Neutropenia / Q000150:complications / Q000453:epidemiology* / Q000276:immunology; D011020:Pneumonia, Pneumocystis / Q000209:etiology; D055728:Primary Myelofibrosis / Q000453:epidemiology / Q000276:immunology; D016553:Purpura, Thrombocytopenic, Idiopathic / Q000453:epidemiology*; D012189:Retrospective Studies; D013030:Spain / Q000453:epidemiology; D014391:Tuberculosis, Miliary / Q000453:epidemiology / Q000276:immunology