The term bronchiolitis obliterans organizing pneumonia (BOOP) refers to nonspecific pathological abnormalities characterized by the presence of granulation tissue within the lumen of the distal pulmonary airspaces, associating "proliferative" bronchiolitis obliterans and organizing pneumonia which is indeed the major component of the pathological process [1]. Some confusion has resulted from th...

A patient with bronchiolitis obliterans organizing pneumonia (BOOP) associated with acute Mycoplasma pneumoniae infection is described. Although mycoplasmas have occasionally been associated with bronchiolitis obliterans, to the best of our knowledge, this is the first well-documented case of BOOP associated with M. pneumoniae infection. The diagnosis of BOOP was made by open-lung biopsy after ...

Because the list of interstitial lung diseases is so extensive, encompassing more than 180 chronic lung diseases in which the interstitium is altered by inflammation and/or fibrosis, this chapter focuses on several inflammatory lung diseases of unknown etiology: usual interstitial pneumonitis, respiratory bronchiolitis, idiopathic bronchiolitis obliterans with organizing pneumonia, pulmonary La...