Pancreatic Cancer Research

ResearcherSapporo Medical UniversityActive in the last 2 years

Hirotoshi Ishiwatari

ORCID-verified (high confidence, 0.95), identity_conf@1As of 8 November 2026

Matched on ORCID iD 0000-0002-6719-4466; OpenAlex author ID A5009167745. Sources: OpenAlex.

Their work

Papers
15 (first author 4, last author 0)
Trials
0
Grants
0
Labs led
0
Collaborators
64
Papers, trials and grants by year

2015: 2 papers · 2016: none · 2017: none · 2018: none · 2019: 1 paper · 2020: 2 papers · 2021: 2 papers · 2022: 2 papers · 2023: 1 paper · 2024: none · 2025: 4 papers · 2026: 1 paper

Papers 15

  1. Impact of tumor necrosis on comprehensive genomic profiling success in pancreatic cancer: a retrospective study. First author DOI 10.1093/jjco/hyaf156↗
  2. Repeated pancreatic juice cytology via endoscopic nasopancreatic drainage catheter combined with clinical findings improves diagnostic ability for malignant ca… Co-author DOI 10.1016/j.pan.2024.11.022↗
  3. Assessment of safety and patency of 7-mm covered metal stents for preoperative biliary drainage in pancreatic cancer: Prospective multicenter study. Co-author DOI 10.1055/a-2503-1995↗
  4. Author reply to letter to the editor: Beyond the ruler: Measuring what truly matters in EUS-guided pancreatic cancer genomics. First author DOI 10.1055/a-2677-0491↗
  5. Prospective, multicentre trial on preoperative biliary drainage by endoscopic ultrasound-guided hepaticogastrostomy for resectable/borderline resectable pancre… Co-author DOI 10.1136/bmjopen-2025-106543↗
  6. Genetic medicine in companion diagnostics of germline BRCA testing of Japanese pancreatic cancer patients. Co-author DOI 10.1038/s10038-022-01097-y↗
  7. Comparing the 14-mm uncovered and 10-mm covered metal stents in patients with distal biliary obstruction caused by unresectable pancreatic cancer: a multicente… First author DOI 10.1007/s00464-021-08342-z↗
  8. HOPS-R01 phase II trial evaluating neoadjuvant S-1 therapy for resectable pancreatic adenocarcinoma. Co-author DOI 10.1038/s41598-022-14094-0↗
  9. Comparison of five-phase computed tomography images of type 1 autoimmune pancreatitis and pancreatic cancer: Emphasis on cases with atypical images. Co-author DOI 10.1016/j.pan.2021.01.016↗
  10. Trial protocol: a randomised controlled trial to verify the non-inferiority of a partially covered self-expandable metal stent to an uncovered self-expandable … Co-author DOI 10.1136/bmjopen-2020-045698↗
  11. Multiple Carcinomas and Intraepithelial Neoplasms in a Case of Familial Pancreatic Cancer: Rapid Morphological Changes in the Pancreatic Cyst and Pathological … Co-author DOI 10.2169/internalmedicine.3882-19↗
  12. Detecting Early Pancreatic Cancer: Current Problems and Future Prospects. First author DOI 10.5009/gnl18491↗
  13. Surveillance of Individuals with a Family History of Pancreatic Cancer and Inherited Cancer Syndromes: A Strategy for Detecting Early Pancreatic Cancers. Co-author DOI 10.3390/diagnostics9040169↗
  14. No benefit of endoscopic sphincterotomy before biliary placement of self-expandable metal stents for unresectable pancreatic cancer. Co-author DOI 10.1016/j.cgh.2015.01.008↗
  15. A case of curatively resected gastric wall implantation of pancreatic cancer caused by endoscopic ultrasound-guided fine-needle aspiration. Co-author DOI 10.1055/s-0034-1377592↗

Closest collaborators

The 25 strongest of 64 by collab_strength@1: shared papers, trials and grants, recent and small-team work weighing most.

  1. Hiroyuki Ono · 7 shared papers, 2019–2026 · strength 1.00
  2. Junya Sato · 5 shared papers, 2020–2025 · strength 0.88
  3. Tatsunori Satoh · 5 shared papers, 2020–2025 · strength 0.77
  4. Hiroyuki Matsubayashi Md · 6 shared papers, 2019–2023 · strength 0.76
  5. Fumitaka Niiya · 3 shared papers, 2023–2025 · strength 0.56
  6. Shinya Kawaguchi · 3 shared papers, 2022–2025 · strength 0.56
  7. Hiroki Sakamoto · 2 shared papers, 2025–2026 · strength 0.46
  8. Takuya Doi · 2 shared papers, 2025–2026 · strength 0.46
  9. Katsuhiko Uesaka · 3 shared papers, 2019–2020 · strength 0.37
  10. Yoshimi Kiyozumi · 3 shared papers, 2019–2023 · strength 0.36
  11. Takuji Iwashita · 2 shared papers, 2021–2025 · strength 0.33
  12. Keita P. Mori · 2 shared papers, 2021–2025 · strength 0.33
  13. Masataka Kikuyama · 2 shared papers, 2019–2022 · strength 0.26
  14. Teiichi Sugiura · 2 shared papers, 2021–2023 · strength 0.25
  15. Tomoko Norose · 1 shared paper, 2026 · strength 0.24
  16. Shinya Uemura · 1 shared paper, 2025 · strength 0.22
  17. Shinya Endo · 1 shared paper, 2025 · strength 0.22
  18. Hiroyuki ONO · 1 shared paper, 2025 · strength 0.22
  19. Tsuyoshi Hayashi · 3 shared papers, 2015–2022 · strength 0.20
  20. Jun Ushio · 1 shared paper, 2025 · strength 0.20
  21. Haruna Takahashi · 1 shared paper, 2025 · strength 0.20
  22. Kensuke Kubota · 1 shared paper, 2025 · strength 0.20
  23. Yusuke Ishida · 1 shared paper, 2025 · strength 0.20
  24. Susumu Hijioka · 1 shared paper, 2025 · strength 0.20
  25. Sho Hasegawa · 1 shared paper, 2025 · strength 0.20

How to reach this person

A chain of introductions through people who have published, run trials or held grants together (warm_path@1: fewest links first, then the strongest). Built from public records only; no contact details are kept.