“…However, even the latter diagnosis may be dubious, since a variety of conditions, such as tuberculosis, brucellosis, histoplasmosis, Hodgkin's diseaqe, carcinoma, and berylliosis, may give rise to sarcoid-like lesions in scalene nodes (Jefferson et al, 1954). On the other hand, considering the results of various major reported series of lung biopsy, a specific histological diagnosis appears to have been established in two-thirds of the cases; in the rest no specific lesion is discovered, but the histological end-results-for example, pulmonary fibrosiscan be appreciated in the majority, leaving about 10% where no opinion can be given.…”