title: [Efficacy of rituximab in lymphomatoid granulomatosis].
abstract: BACKGROUND
  Lymphomatoid Granulomatosis is a rare and serious disease, now considered to be a B-cell lymphoma, which is frequently associated with Epstein-Barr virus infection. There is no consensus on treatment, which is usually based on steroid therapy, either alone or combined with cyclophosphamide and combination chemotherapy.
  
  
  METHODS
  We report the case of an asymptomatic patient diagnosed after the incidental discovery of bilateral nodular opacities on their chest x-ray. Physical examination and bronchoscopy were normal. The diagnosis of Lymphomatoid Granulomatosis was made on the basis of surgical lung biopsy. Immunohistochemical studies confirmed the B phenotype of the lymphoma with the identification of atypical large CD 20 positive cells. In situ hybridisation confirmed the presence of EBV. In this case the course of the disease was slow. Treatment with anti CD 20 monoclonal antibodies (rituximab) led initially to a reduction in parenchymal abnormalities and mediastinal adenopathy.
  
  
  CONCLUSIONS
  This treatment, recently used in Lymphomatoid Granulomatosis with pulmonary involvement, has shown promising results. Rituximab can be used in combination chemotherapy as standard treatment for aggressive B-cell lymphoma.
authors.affiliation: Département des Maladies Respiratoires, CH Le Mans, France.
authors.forename: C
authors.initials: C
authors.lastname: Moudir-Thomas
authors.forename: A
authors.initials: A
authors.lastname: Foulet-Roge
authors.forename: M
authors.initials: M
authors.lastname: Plat
authors.forename: R
authors.initials: R
authors.lastname: Kaswin
authors.forename: P
authors.initials: P
authors.lastname: Lepic
authors.forename: P
authors.initials: P
authors.lastname: Solal-Celigny
authors.forename: F X
authors.initials: FX
authors.lastname: Lebas
mesh_terms: D000911:Antibodies, Monoclonal / Q000627:therapeutic use*; D058846:Antibodies, Monoclonal, Murine-Derived; D000970:Antineoplastic Agents / Q000627:therapeutic use*; D006801:Humans; D008171:Lung Diseases / Q000188:drug therapy*; D008230:Lymphomatoid Granulomatosis / Q000188:drug therapy*; D008297:Male; D008875:Middle Aged; D000069283:Rituximab
chemical_list: D000911:Antibodies, Monoclonal; D058846:Antibodies, Monoclonal, Murine-Derived; D000970:Antineoplastic Agents; D000069283:Rituximab