Radiology Published online April 7, 2020. Perihilar “ bat-wing ” consolidation shows central consolidation with sparing of the lung periphery (Figs. Performance of radiologists in differentiating COVID-19 from viral pneumonia on chest CT. Radiology Published online March 10, 2020. Epidemiology. Other examples are organizing pneumonia (OP) and chronic eosinophilic pneumonia. Physician Board Reviews Physician Assistant Board Reviews CME Free CME. The HRCT appearance of pulmonary sarcoidosis varies greatly and is known to mimic many other diffuse infiltrative lung diseases. For instance a lobar pneumonia caused by streptococcus pneumoniae may become diffuse if the patient does not respond to the treatment. 2018 Oct [PubMed PMID: 30292266] Acute interstitial pneumonitis (AIP), also known as Hamman-Rich syndrome, is a rapidly progressive non-infectious interstitial lung disease of unknown etiology. Bai HX, Hsieh B, Xiong Z et al. Viral pneumonia was correctly diagnosed at the initial CT study in the remaining 49 patients with COVID-19 and two patients with adenovirus. Accessed April 15, 2020. These patients were isolated and obtained treatment. The diagnosis is made by a positive PCR test, which is highly specific. Since December 2019, a cluster of cases with unknown pneumonia with similar clinical manifestations suggesting viral pneumonia appeared in Wuhan city, Hubei Province, China. Viral pneumonia occurs due to aggression of the viral pathogens on the lung structures. Because of the clinical manifestations and the radiologic aspects, viral pneumonia was included in the broad category of atypical pneumonias. These diseases typically present as multifocal consolidations, but sometimes they may become diffuse. 2-7 and 2-8).It is most typical of pulmonary edema (hydrostatic or permeability). Approximately 60 to 70% of patients with sarcoidosis have characteristic radiologic findings. COVID-19 is a viral disease also known as SARS-CoV-2 or severe acute respiratory syndrome coronavirus 2. Three chest radiologists (F.Song, N.S., and Y.S., with approximately 6–32 years of experience in thoracic imaging, especially in the setting of viral pneumonias such as H1N1 and H7N9 pneumonia) reviewed the images independently, with a final finding reached by consensus when there was a discrepancy. Student ... Age - Viral pneumonia is most common in the very young and in the elderly. There is a steep decline in the incidence of viral pneumonia from adolescence through the fifth or sixth decade of life. Terminology. CT has a higher sensitivity but lower specificity and can play a role in the diagnosis and treatment of the disease. OP is organizing pneumonia. It is considered the only acute process among the idiopathic interstitial pneumonias. ... European journal of radiology. 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