[BOOP--a rare diagnosis in clinical practice]. / BOOP--un diagnostic rar în practica pneumologica.

The authors present the case of a patient diagnosed in the first place as an idiopathic pulmonary fibrosis with unfavorable evolution (clinical and functional decline under corticosteroid and immunosuppressive treatment). Lung biopsy established the diagnosis of bronchiolitis obliterans with organizing pneumonia (BOOP).