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Pneumonia: Comorbid and Coexisting 

Pneumonia: Comorbid and Coexisting
Pneumonia: Comorbid and Coexisting

Chrysanthi L. Skevaki

, Athanassios Tsakris

, and Nikolaos G. Papadopoulos

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date: 22 April 2021

Pneumonia is defined as an acute infection of the lung caused by bacteria, viruses, fungi, or other microorganisms and characterized by inflammation both within and around the alveolar tissues (consolidation). Community-acquired pneumonia, which is the most common presentation, represents a challenge for physicians because of the large number and diversity of causative agents, the difficulty in reaching the appropriate clinical diagnosis, and the fact that a single antimicrobial regimen able to combat all possible etiologies is currently missing. The clinical presentation of pneumonia is diverse with a range of symptoms, of which fever, cough, and tachypnea are most common. Diagnosis of pneumonia is supported by a chest radiograph displaying new shadowing, but most often, diagnosis is performed at the primary care level, in the absence of an imaging technique, and is based only on symptoms and physical examination. Pneumonia is caused by a broad spectrum of microorganisms, whose identification can be difficult and time consuming and often requires invasive techniques and procedures of uncertain diagnostic success.

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