Publications by authors named "Hitoshi Ojima"

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Safety, survival outcomes, and prognostic factors in conversion surgery for advanced gastric cancer: a sub-analysis of Japanese patients in the CONVO-GC-1 study.
Itaru Yasufuku, Takahiro Kinoshita, Etsuro Bando, Yukinori Kurokawa, Muneharu Fujisaki, Hitoshi Ojima

Gastric Cancer· November 2025

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Rare Case of Undifferentiated Embryonal Sarcoma of the Liver that Contained an Adenocarcinoma Component.
Akira Watanabe, Yasuaki Enokida, Masaki Suzuki, Takahiro Takada, Tomonori Yoshida, Hitoshi Ojima

Surg Case Rep· July 2025

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Oxaliplatin Added to Fluoropyrimidine/Bevacizumab as Initial Therapy for Unresectable Metastatic Colorectal Cancer in Older Patients: A Multicenter, Randomized, Open-Label Phase III Trial (JCOG1018).
Atsuo Takashima, Tetsuya Hamaguchi, Junki Mizusawa, Fumio Nagashima, Masahiko Ando, Hitoshi Ojima

J Clin Oncol· November 2024

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Two cases of metastatic colorectal cancer with prolonged liver injury following capecitabine combination chemotherapy.
Takahiro Takada, Ryuji Katoh, Kazunosuke Yamada, Hitoshi Ojima

BMJ Case Rep· July 2024

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Baseline ctDNA gene alterations as a biomarker of survival after panitumumab and chemotherapy in metastatic colorectal cancer.
Kohei Shitara, Kei Muro, Jun Watanabe, Kentaro Yamazaki, Hisatsugu Ohori, Hitoshi Ojima

Nat Med· March 2024

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Exploratory Biomarker Analysis Using Plasma Angiogenesis-Related Factors and Cell-Free DNA in the TRUSTY Study: A Randomized, Phase II/III Study of Trifluridine/Tipiracil Plus Bevacizumab as Second-Line Treatment for Metastatic Colorectal Cancer.
Yu Sunakawa, Yasutoshi Kuboki, Jun Watanabe, Tetsuji Terazawa, Hisato Kawakami, Hitoshi Ojima

Target Oncol· January 2024

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Streamlining robotic-assisted abdominoperineal resection.
Kazunosuke Yamada, Jun Imaizumi, Ryuji Kato, Takahiro Takada, Hitoshi Ojima

World J Surg Oncol· December 2023

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The Feasibility and Reliability of Upper Arm-Worn Apple Watch Heart Rate Monitoring for Surgeons During Surgery: Observational Study.
Kazunosuke Yamada, Yasuaki Enokida, Ryuji Kato, Jun Imaizumi, Takahiro Takada, Hitoshi Ojima

JMIR Hum Factors· November 2023

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Genomic landscape and its prognostic significance in stage III colorectal cancer: JCOG1506A1, an ancillary of JCOG0910.
Dai Shida, Aya Kuchiba, Tatsuhiro Shibata, Tetsuya Hamaguchi, Satoshi Yamasaki, Hitoshi Ojima

Cancer Sci· August 2023

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Trifluridine/tipiracil+bevacizumab (BEV) vs. fluoropyrimidine-irinotecan+BEV as second-line therapy for metastatic colorectal cancer: a randomised noninferiority trial.
Yasutoshi Kuboki, Tetsuji Terazawa, Toshiki Masuishi, Masato Nakamura, Jun Watanabe, Hitoshi Ojima

Br J Cancer· May 2023

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Robotic surgery for simultaneous gastric and rectal cancers.
Hitoshi Ojima, Kazunosuke Yamada, Takahiro Takada, Jun Imaizumi, Masaki Suzuki

Asian J Endosc Surg· April 2023

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Panitumumab vs Bevacizumab Added to Standard First-line Chemotherapy and Overall Survival Among Patients With RAS Wild-type, Left-Sided Metastatic Colorectal Cancer: A Randomized Clinical Trial.
Jun Watanabe, Kei Muro, Kohei Shitara, Kentaro Yamazaki, Manabu Shiozawa, Hitoshi Ojima

JAMA· April 2023

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Decreased numbers of gastric, colorectal, lung, and breast cancer surgeries performed in 17 cancer-designated hospitals in Gunma Prefecture of Japan during the COVID-19 pandemic.
Hiroshi Saeki, Ken Shirabe, Tatsuya Miyazaki, Tetsushi Ogawa, Fujio Makita, Hitoshi Ojima

Surg Today· December 2022

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Learning curve for robotic bedside assistance for rectal cancer: application of the cumulative sum method.
Kazunosuke Yamada, Norimichi Kogure, Hitoshi Ojima

J Robot Surg· October 2022

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Local skin flap procedure for repair of rectovaginal fistula: A case report.
Kazunosuke Yamada, Taro Hirose, Hitoshi Ojima

Int J Surg Case Rep· October 2022

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Primary tumor location as a predictor of survival in patients with RAS wild-type colorectal cancer who receive molecularly targeted drugs as first-line therapy: a multicenter real-world observational study by the Japanese Society for Cancer of the Colon and Rectum.
Takahiko Ito, Atsuo Takashima, Kentaro Yamazaki, Hiroki Yukami, Hiroyuki Uetake, Hitoshi Ojima

Int J Clin Oncol· September 2022

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Phase 3 trial of sequential versus combination treatment in colorectal cancer: The C-cubed study.
Ryo Inada, Takeshi Nagasaka, Mototsugu Shimokawa, Hitoshi Ojima, Shingo Noura

Eur J Cancer· July 2022

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Three-year outcomes of a randomized phase III trial comparing adjuvant chemotherapy with S-1 plus docetaxel versus S-1 alone in stage III gastric cancer: JACCRO GC-07.
Yoshihiro Kakeji, Kazuhiro Yoshida, Yasuhiro Kodera, Mitsugu Kochi, Takeshi Sano, Hitoshi Ojima

Gastric Cancer· January 2022

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Effects of Sex and Seasonal Climatic Changes on the Risk of Incidence of Anti-EGFR Therapy-Induced Rash in Cancer Patients: A Retrospective Study.
Takahiro Arai, Yukiyoshi Fujita, Hisao Imai, Hiroe Matsumoto, Miho Yamazaki, Hitoshi Ojima

Medicina (Kaunas)· August 2021

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PD-L1 upregulation is associated with activation of the DNA double-strand break repair pathway in patients with colitic cancer.
Naoya Ozawa, Takehiko Yokobori, Katsuya Osone, Chika Katayama, Kunihiko Suga, Hitoshi Ojima

Sci Rep· June 2021

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Primary Tumor Resection Plus Chemotherapy Versus Chemotherapy Alone for Colorectal Cancer Patients With Asymptomatic, Synchronous Unresectable Metastases (JCOG1007; iPACS): A Randomized Clinical Trial.
Yukihide Kanemitsu, Kohei Shitara, Junki Mizusawa, Tetsuya Hamaguchi, Dai Shida, Hitoshi Ojima

J Clin Oncol· April 2021

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Conversion surgery for metastatic gastric cancer at 2 years after initial diagnosis of cancer of unknown primary with metastasis of cervical lymph nodes and ovary: a case report.
Masaki Suzuki, Hisashi Hosaka, Yasuyuki Fukai, Yasushi Mochida, Daigo Ozawa, Hitoshi Ojima

Surg Case Rep· March 2021

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Four stay-sutures method: a simplified hand-sewn purse-string suture in laparoscopic circular-stapled esophagojejunostomy.
Akihiko Sano, Hitoshi Ojima, Atsushi Ogawa, Kyoichi Ogata, Kana Saito

Surg Today· March 2020

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Optimal timing for the resection of pulmonary metastases in patients with colorectal cancer.
Kazunosuke Yamada, Daigo Ozawa, Ryouichi Onozato, Masaki Suzuki, Atsushi Fujita, Hitoshi Ojima

Medicine (Baltimore)· February 2020

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STMN1 accumulation is associated with dysplastic and neoplastic lesions in patients with ulcerative colitis.
Katsuya Osone, Takehiko Yokobori, Chika Katayama, Ryo Takahashi, Ryuji Kato, Hitoshi Ojima

Oncol Lett· November 2019

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