[Physical examination of the lung--value and limits].

Sensitivity and specificity of clinical findings for the diagnosis of pulmonary diseases is often poor, or information on test characteristics of particular findings is even missing. Nevertheless, a meticulous clinical exam remains a cornerstone in clinical practice. Quite often clear-cut findings may provide valuable diagnostic information. Furthermore, history taking and painstaking physical examination foster the confidence between patients and physicians, which is urgently needed in a time of machine-dominated medical practice.