“…Although the incidence of acute pulmonary thromboembolism (APTE) in Japan has been thought to be minimal over the years [1], the diagnosis of APTE is recently increasing in Japan because of the changes in life style, the aging of the population, the improved clinicians' awareness of APTE, and advances in diagnostic modalities [2]. We had previously reported that Japanese patients with APTE had almost same findings as those in western patients in the collaborative studies of the Japanese Society of Pulmonary Embolism Research (JaSPER; listed in Appendix A) [3,4].…”