“…Leading Articles MEDICALTJOISNAL in his full series of 66 biopsy specimens included cryptogenic fibrosing alveolitis (27), sarcoidosis (15), eosinophilic granuloma (5), and malignant disease (4); the diagnosis was not established in a further 8. He concludes by mentioning that recent advances in chest medicine, due in part to knowledge gained from lung biopsies, are such that the nature of diffuse lung disease in individual patients can now usually be deduced from other and less traumatic methods of investigation and that in future biopsy is likely to be used even less often than it is at present.…”