Dr. Ferran Morell, principal investigator of the VHIR http://en.vhir.org/portal1/grup-equip2.asp?s=recerca&contentid=187035 Pneumology research group, has been the only State expert to have participated in the drafting of the Diagnosis of Idiopathic Pulmonary Fibrosis: An official ATS / ERS / JRS / JRS / ALAT Clinical Practice Guideline, presented during the American Thoracic Society Congress, recently held in San Diego, California. In the preparation of this guide have participated 33 more professionals, representatives of the American Thoracic Society, European Respiratory Society, the Japanese Respiratory Society and the Latin American Respiratory Society. The objective of these guidelines is "to provide physicians who visit patients with interstitial lung diseases with a standardized, clear and agreed upon set of rules by experts on how the disease is defined, how the diagnosis is made with the necessary or convenient examinations in each case," explains Dr. Morell. It is a document that facilitates that the medical community has guidelines agreed for a correct diagnosis of Idiopathic Pulmonary Fibrosis. Thus, the current Guidelines have redefined the microscopic patterns of usual interstitial pneumonia and the diagnostic patterns of Idiopathic Pulmonary Fibrosis (IPF) in computerized tomography. "Recommendations have been made on the use of bronchoalveolar lavage and on the indications for lung biopsy," he adds. It deals with the technique to be used and the classification of High Resolution Computed Tomography (HCT) images, the convenience or not of determining specific IgG and antiwoven antibodies, as well as the possible determination of certain markers, among other aspects. It also emphasizes the convenience of multidisciplinary discussion among the various specialists with the aim of clarifying the diagnosis of IPF as much as possible.The Guide will soon be published in the https://www.atsjournals.org/journal/ajrccm" American Journal Respiratory Critical Care Medicine to replace the previous Guide, which dated from 2011.