Takefumi Ohga

2.9k total citations
67 papers, 2.4k citations indexed

About

Takefumi Ohga is a scholar working on Surgery, Pulmonary and Respiratory Medicine and Molecular Biology. According to data from OpenAlex, Takefumi Ohga has authored 67 papers receiving a total of 2.4k indexed citations (citations by other indexed papers that have themselves been cited), including 35 papers in Surgery, 26 papers in Pulmonary and Respiratory Medicine and 23 papers in Molecular Biology. Recurrent topics in Takefumi Ohga's work include Esophageal Cancer Research and Treatment (24 papers), Gastric Cancer Management and Outcomes (18 papers) and Esophageal and GI Pathology (12 papers). Takefumi Ohga is often cited by papers focused on Esophageal Cancer Research and Treatment (24 papers), Gastric Cancer Management and Outcomes (18 papers) and Esophageal and GI Pathology (12 papers). Takefumi Ohga collaborates with scholars based in Japan and United States. Takefumi Ohga's co-authors include Kimitoshi Kohno, Michihiko Kuwano, Morimasa Wada, Takeshi Uchiumi, Hiroshi Saeki, Koji Koike, Yoshihiko Maehara, Yoshinari Makino, Tadahiro Nozoe and Yoshihiro Kakeji and has published in prestigious journals such as Journal of Biological Chemistry, Journal of Clinical Oncology and Hepatology.

In The Last Decade

Takefumi Ohga

65 papers receiving 2.4k citations

Peers

Countries citing papers authored by Takefumi Ohga

Since Specialization

Citations

This map shows the geographic impact of Takefumi Ohga'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 Takefumi Ohga with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Takefumi Ohga more than expected).

Fields of papers citing papers by Takefumi Ohga

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Takefumi Ohga. 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 Takefumi Ohga. The network helps show where Takefumi Ohga may publish in the future.

Co-authorship network of co-authors of Takefumi Ohga

This figure shows the co-authorship network connecting the top 25 collaborators of Takefumi Ohga. A scholar is included among the top collaborators of Takefumi Ohga 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 Takefumi Ohga. Takefumi Ohga 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

#	Work	Indexed citations
1	Acute limb ischemia of the lower extremity associated with left upper lobe surgery for primary lung cancer 2018 ·Journal of Vascular Surgery Cases and Innovative Techniques ·(unknown), Sosei Kuma, Takefumi Ohga, Keita Tokuishi, Kan Okabayashi	6
2	Rerupture of nonparasitic liver cyst treated with cyst fenestration: a case report 2015 ·Surgical Case Reports ·Kentaro Inoue, Tomohiro Iguchi, Shuhei Ito, Takefumi Ohga, Tadahiro Nozoe, Ken Shirabe, Takahiro Ezaki, Yoshihiko Maehara	8
3	Prognostic criteria in colorectal carcinoma constructed by the combination of tumor-related and host-related factors 2014 ·The American Journal of Surgery ·Tadahiro Nozoe, Rumi Matono, Hideki Ijichi, Takefumi Ohga, Takahiro Ezaki	1
4	Non-cirrhotic portal-systemic encephalopathy caused by enlargement of a splenorenal shunt after pancreaticoduodenectomy for locally advanced duodenal cancer: report of a case 2013 ·Surgery Today ·Yuta Kasagi, Hiroshi Saeki, Tomohiko Akahoshi, (unknown), Koji Ando, Eiji Oki, Takefumi Ohga, Morimasa Tomikawa, Yoshihiro Kakeji, Ken Shirabe, Yoshihiko Maehara	2
5	A Case of Recurrent Esophageal Cancer Treated with Chemoradiation Combined with Long-term Hyperthermia Treatment 2012 ·Saiji Ohga, Katsumasa Nakamura, Tadamasa Yoshitake, Yoshiyuki Shioyama, Takefumi Ohga, T. Sasaki, T. Nonoshita, Kaori Asai, Masaru Morita, Yoshihiro Kakeji, (unknown), Hiroshi Honda	1
6	Progression from laparoscopic-assisted to totally laparoscopic distal gastrectomy: comparison of circular stapler (i-DST) and linear stapler (BBT) for intracorporeal anastomosis 2012 ·Surgical Endoscopy ·Tetsuo Ikeda, Hiroyuki Kawano, Yuichi Hisamatsu, Koji Ando, Hiroshi Saeki, Eiji Oki, Takefumi Ohga, Yoshihiro Kakeji, Shunichi Tsujitani, Shunji Kohnoe, Yoshihiko Maehara	20
7	Prognostic relevance of KRAS and BRAF mutations in Japanese patients with colorectal cancer 2012 ·International Journal of Clinical Oncology ·Ryota Nakanishi, Jun Harada, (unknown), Yan Zhao, Koji Ando, Hiroshi Saeki, Eiji Oki, Takefumi Ohga, Hiroyuki Kitao, Yoshihiro Kakeji, Yoshihiko Maehara	46
8	Two-Stage Operation for High-Risk Patients with Thoracic Esophageal Cancer: An Old Operation Revisited 2011 ·Annals of Surgical Oncology ·Masaru Morita, Tomonori Nakanoko, Nobuhide Kubo, (unknown), Keisuke Ikeda, Akinori Egashira, Hiroshi Saeki, Hideaki Uchiyama, Takefumi Ohga, Yoshihiro Kakeji, Ken Shirabe, Tetsuo Ikeda, Shunichi Tsujitani, Yoshihiko Maehara	30
9	Clinical significance of salvage esophagectomy for remnant or recurrent cancer following definitive chemoradiotherapy 2011 ·Journal of Gastroenterology ·Masaru Morita, Ryuichi Kumashiro, Yuichi Hisamatsu, Ryota Nakanishi, Akinori Egashira, Hiroshi Saeki, Eiji Oki, Takefumi Ohga, Yoshihiro Kakeji, Shunichi Tsujitani, Takeharu Yamanaka, Yoshihiko Maehara	59
10	Advantages of totally laparoscopic distal gastrectomy over laparoscopically assisted distal gastrectomy for gastric cancer 2009 ·Surgical Endoscopy ·Osamu Ikeda, Yoshihisa Sakaguchi, Yoshiro Aoki, Norifumi Harimoto, (unknown), Takaaki Masuda, Takefumi Ohga, Eisuke Adachi, Yasushi Toh, Takeshi Okamura, Hideo Baba	111
11	Clinical Characteristics of Gastric Cancer with Metastasis to the Lymph Node along the Superior Mesenteric Vein (14v) 2008 ·Digestive Surgery ·(unknown), Yoshihisa Sakaguchi, Yasushi Toh, Yoshiro Aoki, Norifumi Harimoto, Junya Taomoto, Osamu Ikeda, Takefumi Ohga, Eisuke Adachi, Takeshi Okamura	26
12	Laparoscopy-assisted right hepatic lobectomy using a wall-lifting procedure 2006 ·Surgical Endoscopy ·Daiki Eguchi, T Nishizaki, Masayuki Ohta, Yoichi Ishizaki, (unknown), K Okita, Takefumi Ohga, I. Takahashi, (unknown), Hiroshi Wada, Shinichi Tsutsui	6
13	Solitary splenic metastasis derived from esophageal cancer. 2003 ·PubMed ·Yasue Kimura, Mitsuhiro Miyazaki, Hiroshi Saeki, Takefumi Ohga, Tadahiro Nozoe, Keizō Sugimachi	9
14	Suppression of the phytohemagglutinin response to lymphocytes is an independent prognosticator in patients with squamous cell carcinoma of the esophagus 2003 ·The Annals of Thoracic Surgery ·Tadahiro Nozoe, Daisuke Korenaga, Takefumi Ohga, Motonori Futatsugi, Yoshihiko Maehara	10
15	Surgical and oncological advances in the treatment of esophageal cancer 2002 ·Surgery ·Takefumi Ohga, Yasue Kimura, Motonori Futatsugi, Mitsuhiro Miyazaki, Hiroshi Saeki, Tadahiro Nozoe	3
16	Interrelation Between Expression of Matrix Metalloproteinase 7 and β-Catenin in Esophageal Cancer 2002 ·Digestive Diseases and Sciences ·(unknown), Shinji Tanaka, K Sugimachi, Yasue Kimura, Mitsuhiro Miyazaki, Takefumi Ohga, Keizō Sugimachi	22
17	A novel variant of WISP1 lacking a Von Willebrand type C module overexpressed in scirrhous gastric carcinoma 2001 ·Oncogene ·Shinji Tanaka, K Sugimachi, Hiroshi Saeki, J. H. Kinoshita, Takefumi Ohga, Mitsuo Shimada, Yoshihiko Maehara, Keizō Sugimachi	67
18	Significance of allogenic blood transfusion on decreased survival in patients with esophageal carcinoma 2001 ·Cancer ·Tadahiro Nozoe, Mitsuhiro Miyazaki, Hiroshi Saeki, Takefumi Ohga, Keizō Sugimachi	19
19	Esophageal carcinoma showing a long stricture due to prominent lymphatic permeation: Report of a case 1999 ·Surgery Today ·Hidetoshi Kawaguchi, Hiroyuki Kuwano, (unknown), Akinori Egashira, (unknown), Takefumi Ohga, (unknown), Kaoru Kitamura, Keizo Sugimachi	4
20	Direct Involvement of the Y-box Binding Protein YB-1 in Genotoxic Stress-induced Activation of the Human Multidrug Resistance 1 Gene 1998 ·Journal of Biological Chemistry ·Takefumi Ohga, Takeshi Uchiumi, Yoshinari Makino, Koji Koike, Morimasa Wada, Michihiko Kuwano, Kimitoshi Kohno	214

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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