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  2. Community-acquired pneumonia - Wikipedia

    en.wikipedia.org/wiki/Community-acquired_pneumonia

    One cause of obstruction, especially in young children, is inhalation of a foreign object such as a marble or toy. The object lodges in a small airway, and pneumonia develops in the obstructed area of the lung. Another cause of obstruction is lung cancer, which can block the flow of air.

  3. Lower respiratory tract infection - Wikipedia

    en.wikipedia.org/wiki/Lower_respiratory_tract...

    Acute bronchitis can be defined as acute bacterial or viral infection of the larger airways in healthy patients with no history of recurrent disease. [7] It affects over 40 adults per 1000 each year and consists of transient inflammation of the major bronchi and trachea. [8]

  4. Pneumonia - Wikipedia

    en.wikipedia.org/wiki/Pneumonia

    A chest x-ray of a patient with severe viral pneumonia due to SARS. In adults, viruses account for about one third of pneumonia cases, [12] and in children for about 15% of them. [44] Commonly implicated agents include rhinoviruses, coronaviruses, influenza virus, respiratory syncytial virus (RSV), adenovirus, and parainfluenza.

  5. Necrotizing pneumonia - Wikipedia

    en.wikipedia.org/wiki/Necrotizing_pneumonia

    Necrotizing pneumonia (NP), also known as cavitary pneumonia or cavitatory necrosis, is a rare but severe complication of lung parenchymal infection. [1] [2] [3] In necrotizing pneumonia, there is a substantial liquefaction following death of the lung tissue, which may lead to gangrene formation in the lung.

  6. Pleurisy - Wikipedia

    en.wikipedia.org/wiki/Pleurisy

    Pleurisy can be caused by a variety of conditions, including viral or bacterial infections, autoimmune disorders, and pulmonary embolism. The most common cause is a viral infection. [2] Other causes include bacterial infection, pneumonia, pulmonary embolism, autoimmune disorders, lung cancer, following heart surgery, pancreatitis and asbestosis ...

  7. Bronchitis - Wikipedia

    en.wikipedia.org/wiki/Bronchitis

    The infection then makes its way down to the bronchi. Symptoms include coughing up sputum, wheezing, shortness of breath, and chest pain. Bronchitis can be acute or chronic. [1] Acute bronchitis usually has a cough that lasts around three weeks, [4] and is also known as a chest cold. [5] In more than 90% of cases, the cause is a viral infection ...

  8. Epidemiology of pneumonia - Wikipedia

    en.wikipedia.org/wiki/Epidemiology_of_pneumonia

    Pneumonia is a common respiratory infection, [2] affecting approximately 450 million people a year and occurring in all parts of the world. [3] It is a major cause of death among all age groups, resulting in 1.4 million deaths in 2010 (7% of the world's yearly total) and 3.0 million deaths in 2016 (the 4th leading cause of death in the world).

  9. Hemoptysis - Wikipedia

    en.wikipedia.org/wiki/Hemoptysis

    The most common causes for hemoptysis in adults are chest infections such as bronchitis or pneumonia. [1] In children, hemoptysis is commonly caused by the presence of a foreign body in the airway. Other common causes include lung cancers and tuberculosis.