The incidence and risk factors of asymptomatic primary spontaneous pneumothorax detected during health check-ups

BMC Pulmonary Medicine

Research Article

Takahide Nagase¹  Masafumi Horie²  Akira Saito²  Akihisa Mitani²  Yoko Murano³  Shoji Tsuji³  Shintaro Yanagimoto³  Kazuhiko Yamamoto³  Yukichika Hakamata³  Megumi Hosoi³ 

[1] Department of Respiratory Medicine, The University of Tokyo Hospital, 7-3-1, Hongo, Bunkyo-ku, 113-8655, Tokyo, Japan;Department of Respiratory Medicine, The University of Tokyo Hospital, 7-3-1, Hongo, Bunkyo-ku, 113-8655, Tokyo, Japan;Division of Health Service Promotion, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, 113-0033, Tokyo, Japan;Division of Health Service Promotion, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, 113-0033, Tokyo, Japan;

关键词: Primary spontaneous pneumothorax;    Asymptomatic primary spontaneous pneumothorax;    Medical check-ups;    Chest X-rays;    University students;    Risk factors;    Body height growth;   

DOI  :  10.1186/s12890-017-0538-8

 received in 2017-06-14, accepted in 2017-11-29,  发布年份 2017

来源: Springer

【 摘 要 】

BackgroundPatients with primary spontaneous pneumothorax (PSP) usually complain of sudden-onset dyspnea and pleuritic chest pain. However, asymptomatic PSP has been incidentally detected on chest X-rays. In this study, we analyzed the incidence, characteristics, risk factors, and prognosis of asymptomatic PSP detected during regular medical check-ups in university students.MethodsIn this study, 101,709 chest X-rays were performed during medical check-ups for students at the University of Tokyo between April 2011 and March 2016. Among them, 43 cases of asymptomatic PSP (0.042%) were detected. We calculated the lung collapse rate of pneumothorax using Kircher’s method. We also analyzed risk factors associated with asymptomatic PSP using characteristics inspected in medical check-ups.ResultsThe incidence of asymptomatic PSP was significantly higher in men than in women (0.050% vs 0.018%). Multivariate analysis revealed an association of younger age, greater height, lower body mass index, and greater height growth per year with an increased risk of asymptomatic PSP in male students. Mild lung collapse (<10%) was present in 22 of 43 students with asymptomatic PSP; among these, eight students eventually underwent an invasive therapy.ConclusionsThe prevalence of asymptomatic PSP among university students was as high as 0.042%. In addition to known risk factors for conventional PSP, greater height growth was a risk factor for asymptomatic PSP. Careful follow-up is very important because a considerable number of patients with mild lung collapse eventually require an invasive medical procedure.

【 授权许可】

CC BY   
© The Author(s). 2017