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Meticillin-resistantStaphylococcus aureusand meticillin-susceptibleS. aureuspneumonia: comparison of clinical and thin-section CT findings

医学 肺炎 金黄色葡萄球菌 胸腔积液 细菌性肺炎 内科学 耐甲氧西林金黄色葡萄球菌 细菌 遗传学 生物
作者
K. Morikawa,Fumito Okada,Yukio Ando,Ryo Ishii,Shoichiro Matsushita,Asami Ono,Toshinari Maeda,Harushi Mori,Shinichi Yamashita,K. Kawahara
出处
期刊:British Journal of Radiology [Wiley]
卷期号:85 (1014): e168-e175 被引量:27
标识
DOI:10.1259/bjr/65538472
摘要

The purpose of this study was to compare the clinical and thin-section CT findings in patients with meticillin-resistant Staphylococcus aureus (MRSA) and meticillin-susceptible S. aureus (MSSA).We retrospectively identified 201 patients with acute MRSA pneumonia and 164 patients with acute MSSA pneumonia who had undergone chest thin-section CT examinations between January 2004 and March 2009. Patients with concurrent infectious disease were excluded from our study. Consequently, our study group comprised 68 patients with MRSA pneumonia (37 male, 31 female) and 83 patients with MSSA pneumonia (32 male, 51 female). Clinical findings in the patients were assessed. Parenchymal abnormalities, lymph node enlargement and pleural effusion were assessed.Underlying diseases such as cardiovascular were significantly more frequent in the patients with MRSA pneumonia than in those with MSSA pneumonia. CT findings of centrilobular nodules, centrilobular nodules with a tree-in-bud pattern, and bronchial wall thickening were significantly more frequent in the patients with MSSA pneumonia than those with MRSA pneumonia (p = 0.038, p = 0.007 and p = 0.039, respectively). In the group with MRSA, parenchymal abnormalities were observed to be mainly peripherally distributed and the frequency was significantly higher than in the MSSA group (p = 0.028). Pleural effusion was significantly more frequent in the patients with MRSA pneumonia than those with MSSA pneumonia (p = 0.002).Findings from the evaluation of thin-section CT manifestations of pneumonia may be useful to distinguish between patients with acute MRSA pneumonia and those with MSSA pneumonia.
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