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Poster Presentations: Wednesday, October 26, 2011 |

Clinical and Pulmonary Thin-Section CT Findings in Acute Klebsiella pneumoniae Pneumonia FREE TO VIEW

Asami Ono, MD; Yumiko Ando, PhD; Fumito Okada, PhD; Tomoko Nakayama, MD; Toru Maeda, PhD; Hiromu Mori, PhD
Chest. 2011;140(4_MeetingAbstracts):644A. doi:10.1378/chest.1115498
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Abstract

PURPOSE: The aim of this study was to assess the clinical and pulmonary thin-section CT findings in patients with acute Klebsiella pneumoniae pneumonia.

METHODS: We retrospectively evaluated thin-section CT examinations performed between January 1991 and December 2007 from 962 patients with acute Klebsiella pneumoniae pneumonia. Seven hundred and sixty-four cases with concurrent infectious diseases were excluded. Thus, our study group comprised 198 patients (118 male, 80 female; age range 18-97 years, mean age 61.5). Underlying diseases and clinical findings were assessed. Parenchymal abnormalities were evaluated along with the presence of enlarged lymph nodes and pleural effusion.

RESULTS: CT findings in patients with acute Klebsiella pneumoniae pneumonia consisted mainly of ground-glass attenuation (100%), consolidation (91.4%), and intralobular reticular opacity (85.9%), which were found in the periphery (96%) of both sides of the lungs (72.2%) and were often associated with pleural effusion (53%).

CONCLUSIONS: The underlying conditions in these patients were alcoholism, smoking habit, or malignant diseases, and the CT findings consisted mainly of consolidation with ground-glass attenuation or intralobular reticular opacity in the periphery of both sides of the lungs, with pleural effusion.

CLINICAL IMPLICATIONS: Klebsiella pneumoniae pneumonia is an important type of pneumonia because of its severity, high incidence of complications, and elevated mortality. Therefore, it is crucial to identify the risk factors associated with poor outcome and to evaluate the radiological findings as soon as possible, so as to lose no time in initiating appropriate management.This work will contribute to the reduction of mortality in patients with acute Klebsiella pneumoniae pneumonia.

DISCLOSURE: The following authors have nothing to disclose: Asami Ono, Yumiko Ando, Fumito Okada, Tomoko Nakayama, Toru Maeda, Hiromu Mori

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