title: Incidence and clinical characteristics of chronic pulmonary thromboembolism in Japan compared with acute pulmonary thromboembolism: results of a multicenter registry of the Japanese Society of Pulmonary Embolism Research.
abstract: The incidence of acute pulmonary thromboembolism (APTE) in Japan is quoted as being extremely low compared with the United States, and the incidence and clinical characteristics of chronic pulmonary thromboembolism (CPTE) in Japan is unknown, so this study investigated these aspects of CPTE in 309 patients with APTE and 68 patients with CPTE. The ratio of the incidence of CPTE to APTE was 0.22 and there was no significant difference in age or sex between the APTE and CPTE patients. All of the predisposing factors for pulmonary thromboembolism, except for thrombophilia, were more frequently seen in the patients with APTE. There are some differences in the incidence and clinical characteristics of CPTE compared with APTE between Japanese and American patients in Japan, suggesting that the pathogenesis of CPTE in Japan may differ from that in the USA.
authors.affiliation: The First Department of Internal Medicine, Mie University, Tsu, Japan. mashio@clin.medic.mie-u.ac.jp
authors.forename: Mashio
authors.initials: M
authors.lastname: Nakamura
authors.forename: Osamu
authors.initials: O
authors.lastname: Okada
authors.forename: Masahito
authors.initials: M
authors.lastname: Sakuma
authors.forename: Norifumi
authors.initials: N
authors.lastname: Nakanishi
authors.forename: Yoshiyuki
authors.initials: Y
authors.lastname: Miyahara
authors.forename: Norikazu
authors.initials: N
authors.lastname: Yamada
authors.forename: Hirofumi
authors.initials: H
authors.lastname: Fujioka
authors.forename: Takayuki
authors.initials: T
authors.lastname: Kuriyama
authors.forename: Takeyoshi
authors.initials: T
authors.lastname: Kunieda
authors.forename: Tsuneaki
authors.initials: T
authors.lastname: Sugimoto
authors.forename: Takeshi
authors.initials: T
authors.lastname: Nakano
mesh_terms: D000208:Acute Disease; D000293:Adolescent; D000368:Aged; D000369:Aged, 80 and over; D015984:Causality; D002908:Chronic Disease; D005260:Female; D006801:Humans; D015994:Incidence; D007564:Japan / Q000453:epidemiology; D008297:Male; D008875:Middle Aged; D011655:Pulmonary Embolism / Q000175:diagnosis / Q000453:epidemiology* / Q000209:etiology; D012189:Retrospective Studies