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To the physician who is accustomed to order the sending of a specimen of sputum to the laboratory for examination as a routine procedure and does not get first hand knowledge of the appearances of these various types of disease exudates, the contents of this monograph will quickly prove to him that he has neglected a major portion of his part of the clinical examination. It has been repeatedly shown that the physical signs commonly depended on by the clinician to diagnosticate pulmonary disorders originate in the first few millimeters of depth from the surface and as practically all of the morbid processes dealt with are exudative, it is readily apparent that much pertinent information may be obtained from a close ocular examination of the sputum. The trend of the modern physician to relegate this examination to the laboratory is a step backward. Probably the most accurate knowledge of the
The Sputum: Its Examination and Clinical Significance. Arch Intern Med (Chic). 1932;50(5):799. doi:10.1001/archinte.1932.00150180152013
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