"Not-specified interstitial" lesions represented mostly cryptogenic fibrous alveolitis, extrinsic allergic bronchioloalveolitis prevailed among "disseminated" lesions, "infiltrative" lesions were proved to be extrinsic alveolitis or disseminated carcinoma. Among more definitely formulated suppositions of the clinician, cryptogenic alveolitis was proved in more then 50% of cases often modified by extensive fibrosis, organized pneumonia, cholesterol pneumonia or minute desquamative pattern. A similar relation of diagnostic correctness was found in allergic bronchioloalveolitis suprisingly often modified again by fibrosis and cholesterol pneumonia. Valid diagnoses were found in sarcoidosis, presumed Goodpasture syndrome harboured only pneumoconiotic stigmatization. In brief: Bioptical diagnosis nearly always replaced a vague clinical evaluation whereas definite nosological formulations were proved, turned more exact or changed in equal proportions, biopsy was not found contributory but in two cases.

Hlavův 1 patologickoanatomický ústav 1 LF UK a VFN Praha