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Epidemiology and Clinical Features of Pulmonary Nontuberculous Mycobacteriosis in Nagasaki, Japan

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Title: Epidemiology and Clinical Features of Pulmonary Nontuberculous Mycobacteriosis in Nagasaki, Japan
Authors: Ide, Shotaro / Nakamura, Shigeki / Yamamoto, Yoshihiro / Kohno, Yoshihisa / Fukuda, Yuichi / Ikeda, Hideki / Sasaki, Eisuke / Yanagihara, Katsunori / Higashiyama, Yasuhito / Hashiguchi, Kohji / Futsuki, Yoji / Inoue, Yuichi / Fukushima, Kiyoyasu / Suyama, Naofumi / Kohno, Shigeru
Issue Date: 28-May-2015
Publisher: Public Library of Science
Citation: PLOS ONE, 10(5), e0128304; 2015
Abstract: Background and Objectives: Recent reports indicate that the incidence of nontuberculous mycobacterial-lung disease (NTM-LD) is increasing. This study aimed to investigate the epidemiology and clinical features of NTM-LD patients in Nagasaki prefecture, Japan to identify the negative prognostic factors for NTM-LD in Japan. Methods: The medical records of patients newly diagnosed with NTM-LD in eleven hospitals in Nagasaki prefecture between January 2001 and February 2010 were reviewed. Data regarding the annual population of each region and the incidence of all forms of tuberculosis were collected to assess geographic variations in NTM-LD incidence, isolates, and radiological features. Results: A total 975 patients were diagnosed with NTM-LD. The incidence increased over the study period and reached 11.0 and 10.1 per 100,000 population in 2008 and 2009, respectively. M. intracellulare was the most common pathogen in the southern region, and M. avium most common in other regions. The most common radiographic pattern was the nodular-bronchiectatic pattern. Age >60 years, body mass index <18.5 kg/m2, underlying lung disease, and cavitary pattern were the negative prognostic factors at the 1-year follow-up. Conclusions: The incidence of NTM-LD has been increasing in Nagasaki prefecture. The isolates and radiographic features of patients vary markedly by region.
URI: http://hdl.handle.net/10069/35671
DOI: 10.1371/journal.pone.0128304
Rights: © 2015 Ide et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited
Type: Journal Article
Text Version: publisher
Appears in Collections:Articles in academic journal

Citable URI : http://hdl.handle.net/10069/35671

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