Atsushi Oba

2.1k total citations · 1 hit paper
107 papers, 948 citations indexed

About

Atsushi Oba is a scholar working on Oncology, Surgery and Pulmonary and Respiratory Medicine. According to data from OpenAlex, Atsushi Oba has authored 107 papers receiving a total of 948 indexed citations (citations by other indexed papers that have themselves been cited), including 85 papers in Oncology, 54 papers in Surgery and 43 papers in Pulmonary and Respiratory Medicine. Recurrent topics in Atsushi Oba's work include Pancreatic and Hepatic Oncology Research (76 papers), Cholangiocarcinoma and Gallbladder Cancer Studies (25 papers) and Neuroendocrine Tumor Research Advances (22 papers). Atsushi Oba is often cited by papers focused on Pancreatic and Hepatic Oncology Research (76 papers), Cholangiocarcinoma and Gallbladder Cancer Studies (25 papers) and Neuroendocrine Tumor Research Advances (22 papers). Atsushi Oba collaborates with scholars based in Japan, United States and Brazil. Atsushi Oba's co-authors include Hiromichi Ito, Yu Takahashi, Yosuke Inoue, Yoshihiro Ono, Takafumi Sato, Akio Saiura, Yoshihiro Mise, Richard D. Schulick, Marco Del Chiaro and Mohammed Al-Musawi and has published in prestigious journals such as The Lancet, Journal of Clinical Oncology and SHILAP Revista de lepidopterología.

In The Last Decade

Atsushi Oba

84 papers receiving 945 citations

Hit Papers

align trajectories

Peers

Atsushi Oba

ONCOL

SURGE

PRM

EPIDE

CR

So Yamaki Japan

Katsuhisa Ohgi Japan

Berend R. Beumer Netherlands

Byong Ro Kim South Korea

Hongbeom Kim South Korea

Satoshi Hirooka Japan

Jason S. Starr United States

A. Khan United Kingdom

Tatsuaki Sumiyoshi Japan

Shin Nakahira Japan

So Yamaki Japan

Atsushi Oba

897 ×1.2

ONCOL

559 ×1.3

SURGE

452 ×1.2

PRM

267 ×1.3

EPIDE

157 ×0.8

CR

Citations per year, relative to Atsushi Oba Atsushi Oba (= 1×) peers So Yamaki

Countries citing papers authored by Atsushi Oba

Since Specialization

Citations

This map shows the geographic impact of Atsushi Oba's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Atsushi Oba with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Atsushi Oba more than expected).

Fields of papers citing papers by Atsushi Oba

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Atsushi Oba. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Atsushi Oba. The network helps show where Atsushi Oba may publish in the future.

Co-authorship network of co-authors of Atsushi Oba

This figure shows the co-authorship network connecting the top 25 collaborators of Atsushi Oba. A scholar is included among the top collaborators of Atsushi Oba based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Atsushi Oba. Atsushi Oba is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

1.

Oba, Atsushi, Aya Maekawa, Christina Villard, et al.. (2025). Western and Eastern experience in treating perihilar cholangiocarcinoma: retrospective bi-centre study. BJS Open. 9(2).

2.

Oba, Atsushi, Tatsunori Miyata, Hayato Baba, et al.. (2025). Prognostic role of peritoneal lavage cytology: Proposal for staging laparoscopy criteria in biliary tract cancer. European Journal of Surgical Oncology. 51(10). 110369–110369.

3.

Maekawa, Aya, Atsushi Oba, Yosuke Inoue, et al.. (2025). Clinical implications of disappearing pancreatic cancer liver metastases: Lessons from colorectal liver metastases. European Journal of Surgical Oncology. 51(5). 109635–109635. 1 indexed citations

4.

Inoue, Yosuke, Takafumi Sato, Kosuke Kobayashi, et al.. (2025). A left‐posterior approach to the superior mesenteric artery during robot‐assisted pancreaticoduodenectomy. Journal of Hepato-Biliary-Pancreatic Sciences. 32(4). 317–326. 1 indexed citations

5.

Maekawa, Aya, Atsushi Oba, Yosuke Inoue, et al.. (2024). A proposal of ABCD metastasectomy criteria for synchronous/metachronous metastatic pancreatic cancer in the era of multidisciplinary treatment. British journal of surgery. 111(1). 8 indexed citations

6.

Ito, Hiromichi, Atsushi Oba, Yoshihiro Ono, et al.. (2023). Role of Intraoperative Assessment of Proximal Bile Duct Margin Status and Additional Resection of Perihilar Cholangiocarcinoma: Can Local Clearance Trump Tumor Biology? A Retrospective Cohort Study. Annals of Surgical Oncology. 30(6). 3348–3359. 7 indexed citations

7.

Kitano, Yuki, Yoshihiro Ono, Kosuke Kobayashi, et al.. (2023). Neoadjuvant chemotherapy for borderline resectable colorectal cancer liver metastases: a single-institution retrospective study. HPB. 26(2). 282–290. 4 indexed citations

8.

Kobayashi, Kosuke, Yosuke Inoue, Atsushi Oba, et al.. (2023). Diagnosis and management of postpancreatectomy hemorrhage: A single-center experience of consecutive 1,096 pancreatoduodenectomies. Pancreatology. 23(3). 235–244. 8 indexed citations

9.

Ono, Yoshihiro, Yosuke Inoue, Hiromichi Ito, et al.. (2022). Analysis of prognostic factors for borderline resectable pancreatic cancer after neoadjuvant chemotherapy: the importance of CA19-9 decrease in patients with elevated pre-chemotherapy CA19-9 levels. HPB. 25(1). 100–108. 10 indexed citations

10.

Sato, Yozo, Kiyoshi Matsueda, Marie Osawa, et al.. (2022). Interventional management for postoperative arterial bleeding in gastrointestinal surgery. SHILAP Revista de lepidopterología. 11(4). 179–185.

11.

Takahashi, Yu, Takashi Sasaki, Naoki Sasahira, et al.. (2022). Safety and efficacy of inside-stent as bridging therapy for malignant hilar biliary obstruction: single-centre prospective study. British journal of surgery. 109(5). 468–469. 3 indexed citations

12.

Kobayashi, Kosuke, Yoshihiro Ono, Atsushi Oba, et al.. (2022). Evaluation of local recurrence after pancreaticoduodenectomy for borderline resectable pancreatic head cancer with neoadjuvant chemotherapy: Can the resection level change after chemotherapy?. Surgery. 173(5). 1220–1228. 5 indexed citations

13.

Ono, Yoshihiro, Takafumi Sato, Yosuke Inoue, et al.. (2022). Long‐Term Outcome of Patients with Postoperative Refractory Diarrhea After Tailored Nerve Plexus Dissection Around the Major Visceral Arteries During Pancreatoduodenectomy for Pancreatic Cancer. World Journal of Surgery. 46(5). 1172–1182. 21 indexed citations

14.

Wu, Andrew, Atsushi Oba, Ben Harnke, et al.. (2022). Incidence of Postoperative Cognitive Dysfunction Following Inhalational vs Total Intravenous General Anesthesia: A Systematic Review and Meta-Analysis. Neuropsychiatric Disease and Treatment. Volume 18. 1455–1467. 17 indexed citations

15.

Kobayashi, Kosuke, Yosuke Inoue, Yuki Kitano, et al.. (2022). Optimizing the selection of technically unresectable colorectal liver metastases. Surgery. 173(2). 442–449. 7 indexed citations

16.

Wu, Yan‐Dong, Atsushi Oba, Laurel Beaty, et al.. (2021). Ductal Dilatation of ≥5 mm in Intraductal Papillary Mucinous Neoplasm Should Trigger the Consideration for Pancreatectomy: A Meta-Analysis and Systematic Review of Resected Cases. Cancers. 13(9). 2031–2031. 11 indexed citations

17.

Komatsu, Hiroshi, Takashi Ono, Yasushi Ishida, et al.. (2020). Association Between Autistic Symptoms and Self-Stigma in Patients with Schizophrenia Spectrum Disorders. SHILAP Revista de lepidopterología. 1 indexed citations

18.

Kawakatsu, Shoji, Takeaki Ishizawa, Yoshiya Fujimoto, et al.. (2020). Impact on operative outcomes of laparoscopic simultaneous resection of colorectal cancer and synchronous liver metastases. Asian Journal of Endoscopic Surgery. 14(1). 34–43. 7 indexed citations

19.

Inoue, Yosuke, Akio Saiura, Atsushi Oba, et al.. (2020). Neoadjuvant gemcitabine and nab‐paclitaxel for borderline resectable pancreatic cancers: Intention‐to‐treat analysis compared with upfront surgery. Journal of Hepato-Biliary-Pancreatic Sciences. 28(2). 143–155. 34 indexed citations

20.

Wu, Yan‐Dong, Jason M. Samuels, Ben Harnke, et al.. (2020). Multifocal/diffuse pancreatic serous cystic neoplasms: Systematic review with a new case. Pancreatology. 20(5). 902–909. 2 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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