PMID: 8597323Mar 15, 1996Paper

The laboratory evaluation of opportunistic pulmonary infections

Annals of Internal Medicine
J H ShelhamerF P Ognibene

Abstract

The patient population at risk for opportunistic pulmonary infections has increased during the last decade. The spectrum of organisms causing opportunistic infections has also grown. With an ever broader list of potential diagnosis, a specific diagnosis of the cause of pulmonary disease becomes more important. Recent microbiologic advances have helped to facilitate the laboratory diagnosis of some of these agents. Immunoassays are available for the detection of antigen in nasopharyngeal secretions (respiratory syncytial virus, influenza) in serum (Cryptococcus species), and in urine (Legionella or Histoplasma species). Rapid-culture techniques are available for the culture and detection of various viruses, including cytomegalovirus. Molecular probes can now assist in the rapid identification of Mycobacterium tuberculosis and some fungi. In the near future, polymerase chain reaction-based techniques may assist in the detection of Pneumocystis carinii and Legionella, Chlamydia, Mycoplasma, and Mycobacteria species. An expeditious evaluation of pulmonary disease requires an understanding of the differential diagnosis of likely causes of pulmonary disease in specific immunosuppressed patient populations, an understanding of the mos...Continue Reading

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