At a conference on tuberculosis which I recently attended, three papers dealing with the differential diagnosis of pulmonary tuberculosis from three different points of view were read. None referred to a condition which I have found most frequently mistaken for pulmonary tuberculosis among patients presenting symptoms suggestive of tuberculosis who have been sent to me for special examination. I refer to a chronic postinfluenzal pulmonary disorder of long duration. A semichronic pneumonic sequel of influenza was recognized just after the epidemic of 1918. But the disorder I refer to is found in patients who are presenting themselves now, four years and more after the epidemic, with a history of continuous pulmonary disease since that time.
Many of these patients have at one time or another been under treatment for supposed heart disease. All of them have been under more or less continuous treatment for supposed pulmonary tuberculosis ever since they
McCRUDDEN FH. POSTINFLUENZAL CHRONIC PNEUMONITIS: A CONDITION COMMONLY MISTAKEN FOR PULMONARY TUBERCULOSIS, AND FREQUENTLY FOR HEART DISEASE. JAMA. 1923;80(9):609–612. doi:10.1001/jama.1923.02640360017006
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