Abstract
Objectives
To provide updated clinico-epidemiological information on chronic pancreatitis (CP) in Japan.
Methods
We conducted a two-stage nationwide epidemiological survey; the number of CP patients was estimated in the first-stage survey, and their clinical features were examined in the second-stage survey. We surveyed patients with CP who had visited hospitals in 2016 and were diagnosed according to the Japanese diagnostic criteria 2009 (DC2009). Furthermore, we validated the new Japanese diagnostic criteria (DC2019) in patients with early CP diagnosed according to DC2009.
Results
The number of patients with definite/probable CP in 2016 was 56,520 (prevalence, 44.5 per 100,000 persons), and that of early CP was 4470 (prevalence, 3.5 per 100,000 persons). We obtained detailed clinical information of 2150 patients with definite/probable CP and 249 patients with early CP. Compared with the early CP cases, the definite/probable CP cases had higher proportions of male (4.8 vs. 1.3), alcohol-related etiology (72.0% vs. 45.8%), smoking history (69.6% vs. 41.0%), diabetes mellitus (42.3% vs. 19.3%), and past history of acute pancreatitis (AP) (50.4% vs. 22.1%). Among the patients with early CP diagnosed according to DC2009, 93 (37.3%) were diagnosed with early CP according to DC2019, but the diagnosis of the remaining 156 (62.7%) patients was downgraded. Alcohol-related etiology, smoking history, early disease onset, and past history of AP were associated with the maintenance of early CP diagnosis in DC2019.
Conclusion
We clarified the current status of CP in Japan. Further validation studies are warranted to clarify the diagnostic utility of DC2019.
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Abbreviations
- AP:
-
Acute pancreatitis
- BT-PABA:
-
N-benzoyl-l-tyrosyl-p-aminobenzoic acid
- CI:
-
Confidence interval
- CP:
-
Chronic pancreatitis
- DC:
-
Japanese clinical diagnostic criteria for chronic pancreatitis
- DM:
-
Diabetes mellitus
- EUS:
-
Endoscopic ultrasonography
- HP:
-
Hereditary pancreatitis: MRCP, magnetic resonance cholangiopancreatography
- SD:
-
Standard deviation
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Acknowledgements
The authors are grateful to the doctors who replied to the questionnaires.
Collaborators: Shin Miura , Tetsuya Takikawa , Seiji Hongo , Eriko Nakano , Tatsuhide Nabeshima , Ryotaro Matsumoto , Yu Tanaka , Masayuki Ueno , Tsuyoshi Mukai , Masataka Matsumoto , Yasushi Kudo , Shunjiro Azuma , Kosuke Okuwaki , Satoshi Yamamoto , Kazuo Inui , Kasen Kobashigawa , Jun Unno , Nao Fujimori , Katsuya Kitamura , H iroyuki Miyakawa , Kuniyuki Takahashi , Tsukasa Ikeura , Kazuichi Okazaki , Mamoru Takenaka , Mitsuharu Fukasawa , Hiroyuki Funayama , Akira Mitoro , Tadayuki Takagi , Masanari Sekine , Kanetoshi Suwa , Junichi Sakagami , Masaharu Ishida , Masayuki Ohtsuka , S hingo Kagawa , Takashi Muraki , Takayuki Watanabe , Takashi Watanabe , Katsunori Yamamoto , T omohiro Masaka , Masatsugu Nagahama , Ai Sato , Yukio Aruga , Yousuke Nakai , Eisuke Iwasaki , T akao Itoi , Yuki Kawaji , Masayuki Kitano , Kazuhiro Mizukami , Susumu Iwasaki , Masashi Mori , Naoya Kaneko , Yuzo Kodama , Hiroko Sato , Naoki Yoshida , Katsuko Hatayama , Takashi Kobayashi , Atsuyuki Hirano , Miyuki Kaino , Toshio Fujisawa , Tomoyuki Ushijima , Mitsuru Chiba , K yoko Shimizu , Hirotaka Ota , Masao Toki , Takao Nishikawa , Yu Yoshida , Kei Tanaka , Kota Uetsuki , Daisuke Motoya , Shinichiro Muro , Hiroyuki Watanabe , Yoshiki Imamura , Tetsuya Ishizawa , Terumi Kamisawa , M io Tsuruoka , Kazunao Hayashi , Shuji Terai , K unio Iwatsuka , Keisuke Iwata , Motoyuki Yoshida , T omofumi Takagi , Manabu Goto , Noriko Oza , Y asuhito Takeda , Hideki Hagiwara , Toshihiro Tadano , Toshitaka Sakai , Kimi Sumimoto , Nauro Nishimura , Atsushi Irisawa , Masaki Kuwatani , Nakao Shirahata , Masahiro Satoh , Tomoaki Fujikawa , Yusuke Iizawa , Noriko Watanabe , H iroshi Ishiguro , Naoya Sawada , Kazuhiro Katada , Hiromu Kondo , Ichiro Sakakihara , J unji Nishida , Tetsuo Tamura , Naohiro Dairaku , Hidehiro Kamezaki , Hiroyuki Okano , Shuji Suzuki , Tomoyoshi Okamoto , Yasuhiro Matsugu , Mahiro Imamura , Mitsuyoshi Honjo , Gen Sugiyama , Hajime Ohta , Syunichi Higashide , Shuji Ishii , Tatsuya Hoshi , Yasuhiko Takagi , Akihiko Satoh , Naohisa Yamaji , Nauro Nishimura , Masayuki Shibasaki , Hiroyuki Tamura , Takuji Iwashita , Masayo Motoya , Yuki Tanisaka , Shomei Ryozawa , H ajime Takatori , Nanae Tsuruoka , S hinichi Hashimoto , Noriaki Suzuki , Yuichirou Sato , H ironao Tamai , Kazuo Hara , K iyoshi Ashida , T omoyuki Yokota , Tsuyotoshi Tsuji , Makoto Abue , Hiroaki Tomaki , Masanori Fukunishi , Hideaki Koga , Yusuke Takehara , H iroshi Kawamura , Naoto Shimokawahara , Naoya Otsu , Yasutoshi Kimura , Keinosuke Ishido , Yasuhide Kofunato , Masahiro Shiihara , T akanori Sakaguchi , Toshihiko Masui , Hidetoshi Eguchi , Kazuhiro Suzumura , Takao Ide , Masafumi Inomata , Kosei Maemura , Hajime Iizawa , A kio Nakajima , Shiro Uyama , Shigehiro Shiozaki , Sachio Yokoyama , T oshiki Wakabayashi , Takayuki Furuuchi , Toshifumi Gushima , S huichi Satoh , Takeshi Shioya , Kazunori Nakazawa , Yoshimitsu Takahashi , Nobuhiko Fukuba , Saburo Matsubara .
Funding
This work was supported in part by the Japan Pancreas Society, and Division of Gastroenterology, Tohoku University Graduate School of Medicine.
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Masamune A received a lecture fee from Mylan EPD.
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Supplementary file1 Supplementary Fig. 1. Schematic flowchart of the process for CP diagnosis. Definite CP is diagnosed by the presence of definite findings in items ① or ② or the presence of probable findings in ① or ② together with more than two items among ③ ~ ⑤. A diagnosis of early CP can be made if a patient does not satisfy a diagnosis of definite or probable CP but has at least three of five (③ ~ ⑦) clinical signs and imaging findings of early CP. If imaging findings of early CP were absent, a diagnosis of possible CP could be made after ruling out other diseases. CP, chronic pancreatitis; ERCP, endoscopic retrograde cholangiopancreatography; EUS, endoscopic ultrasonography; MRCP, magnetic resonance cholangiopancreatography. Supplementary Fig. 2. Trend of the estimated number of patients with CP in Japan. The estimated numbers of patients with CP in this and previous (references #4–8) surveys are shown. Supplementary Fig. 3. Distribution of age at disease onset in patients with CP according to sex. Supplementary Fig. 4. Age distribution of patients with early CP according to sex. (PDF 71 kb)
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Masamune, A., Kikuta, K., Kume, K. et al. Nationwide epidemiological survey of chronic pancreatitis in Japan: introduction and validation of the new Japanese diagnostic criteria 2019. J Gastroenterol 55, 1062–1071 (2020). https://doi.org/10.1007/s00535-020-01704-9
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DOI: https://doi.org/10.1007/s00535-020-01704-9