![]() ![]() Plouffe JF, Breiman RF, Fields BS, Herbert M, Inverso J, Knirsch C, Kolokathis A, Marrie TJ, Nicolle L, Schwartz DB. Organizing pneumonia pattern in the follow-up CT of Legionella-infected patients. Chest CT findings and clinical features in mild Legionella pneumonia. Legionnaire's pneumonia: is there really an interstitial disease?. Br J Radiol (full text) - doi:10.1259/bjr/31200593 - Free text at pubmed - Pubmed citation Pneumonia in the immunocompetent patient. The chest X-ray in Legionella Pneumonia (Legionnaires' disease). Chest computed tomographic findings and clinical features of legionella pneumonia. Computed tomographic features of Legionella pneumophila pneumonia in 38 cases. The radiologic manifestations of Legionella pneumonia. pleural effusions can be common but not always present 13.can have a subpleural or peribronchovascular pattern 2,8.non segmental distribution may be more common than segmental distribution 12.those with extensively consolidated lesions can have associated cavitation 3.bilateral or unilateral single or multifocal consolidative changes (most common 3) and/or ground glass opacities 2 pure ground glass changes can also uncommonly occur.Multi-lobar or multi-segmental changes have been reported to be typical on CT scans 3. Described features include: Occasionally cases may give a bulging fissure sign. Pleural effusions can be common and are occasionally seen even in the absence of lung field infiltrates 1. Resolution of infiltrates may be slow, and the tendency for delayed clearing should be considered before initiating any further invasive diagnostic investigation. ![]() ![]() There may be a middle and lower zone predominance 5. Imaging features can be variable although changes are often described as multifocal and bilateral. Radiographic appearances often lag behind the clinical picture there can be deterioration on imaging despite clinical improvement. The infection is primarily caused by the aerobic gram-negative bacillus Legionella pneumophila (thought be responsible for around 80% of cases) and, to a lesser extent, by organisms such as Clinical presentationĪpart from the respiratory and inflammatory related symptoms, hyponatremia is a recognized feature due to inappropriate ADH secretion. The commonest form of transmission is thought to be from inhalation of contaminated aerosols produced in association with water sprays, jets or mists.Īspiration of contaminated water or ice, particularly in susceptible hospital patients it also thought to be an important source. Legionella pneumophila is found in ~15% (range 2-25%) of adults hospitalized for pneumonia 5. Legionella pneumonia tends to be more prevalent among immunocompromised patients. ![]()
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