Enfermedad pulmonar intersticial asociada a enfermedades de tejido conectivo

it should be differentiated from other pathologies among those are idiopathic and ild associated to connective tissue diseases (ctd). new concepts have been developed in the last years, and they have been classified in seven defined subgroups. it has been described the association of each one of these subgroups with ctd. natural history and other aspects of its treatment is not known completely. for complete diagnose it is required clinical, image, and histopathologic approaches. the biopsy lung plays an essential role. it is important to promote and to stimulate the subclasification of each subgroup with the purpose of, knowing their natural history, directing the treatment and to improve their outcome.