Publications by authors named "Masato Ozaka"

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Endoscopic Retrograde Cholangiopancreatography-guided Biliary Drainage with Duckbill-type Anti-reflux Metal Stent versus Endoscopic Ultrasound-guided Hepaticogastrostomy for Malignant Distal Biliary Obstruction in Pancreatic Cancer with Duodenal Invasion.
Tsuyoshi Takeda, Takashi Sasaki, Tatsuki Hirai, Yoichiro Sato, Yuri Maegawa, Masato Ozaka

DEN Open· April 2026

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Adverse Events of Single Balloon Enteroscopy-assisted Endoscopic Retrograde Cholangiopancreatography in the Elderly: A Propensity Score Matching Analysis.
Hiroki Nakagawa, Tsuyoshi Takeda, Takeshi Okamoto, Takafumi Mie, Takaaki Furukawa, Masato Ozaka

DEN Open· April 2026

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Clinical Practice Guidelines for Pancreatic Cancer 2025 From the Japan Pancreas Society: A Synopsis.
Toshiya Abe, Masafumi Nakamura, Chigusa Morizane, Masahiro Yoshida, Masayuki Kitano, Masato Ozaka

Pancreas· January 2026

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Combination chemotherapy for older patients with unresectable biliary tract cancer: a prospective observational study using propensity-score matched analysis (JON2104-B).
Satoshi Kobayashi, Kohei Nakachi, Kouji Yamamoto, Makoto Ueno, Yuta Maruki, Masato Ozaka

J Gastroenterol· December 2025

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Exploring the role of CA 19-9 dynamics in pancreatic cancer multidisciplinary treatment: Proposal of the PANC classification.
Aya Maekawa, Atsushi Oba, Takafumi Mie, Yui Sawa, Hayato Baba, Masato Ozaka

Surgery· December 2025

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Patient characteristics related to screening failure in Phase I trials.
Haruka Ozaki, Eriko Miyawaki, Naoki Miyazaki, Masahiro Kuno, Kana Kurokawa, Masato Ozaka

BMC Cancer· December 2025

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Changing treatment outcomes in metastatic and recurrent pancreatic cancer: a real-world comparison before and after the availability of nanoliposomal irinotecan.
Takafumi Mie, Masato Ozaka, Takeshi Okamoto, Keito Suzuki, Yoichiro Sato

Jpn J Clin Oncol· December 2025

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Surgical Challenges Associated with Collateral Veins Formation in Pancreatic Cancer with Vein Resection.
Tatsunori Miyata, Atsushi Oba, Tomotaka Kato, Aya Maekawa, Satoshi Tsuchiya, Masato Ozaka

Ann Surg Oncol· December 2025

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Modified Fluorouracil, Leucovorin, Irinotecan, and Oxaliplatin or S-1, Irinotecan, and Oxaliplatin Versus Nab-Paclitaxel + Gemcitabine in Metastatic or Recurrent Pancreatic Cancer (GENERATE, JCOG1611): A Randomized, Open-Label, Phase II/III Trial.
Akihiro Ohba, Masato Ozaka, Junki Mizusawa, Takuji Okusaka, Satoshi Kobayashi

J Clin Oncol· November 2025

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Comparison of clinical features by primary site in patients with biliary tract cancer who received gemcitabine-based chemotherapy: an exploratory analysis of JCOG1113.
Yuko Suzuki, Masafumi Ikeda, Junki Mizusawa, Yusuke Sano, Chigusa Morizane, Masato Ozaka

Int J Clin Oncol· October 2025

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Prognostic role of peritoneal lavage cytology: Proposal for staging laparoscopy criteria in biliary tract cancer.
Yoshiyuki Shibata, Atsushi Oba, Gaku Shimane, Tatsunori Miyata, Jun Tauchi, Masato Ozaka

Eur J Surg Oncol· October 2025

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Progressive Sarcopenia as a Prognostic Marker in the Era of Immunotherapy.
Takeshi Okamoto, Takashi Sasaki, Masato Ozaka, Naoki Sasahira

Hepatol Res· September 2025

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Electronic Patient-Reported Outcome Quality of Life Score in Japanese Patients With Pancreatic Cancer on Second-Line Chemotherapy: A Multicenter Observational Study.
Yuki Takumoto, Akihiro Ohba, Takeshi Terashima, Makoto Ueno, Kenji Ikezawa, Masato Ozaka

Cancer Med· September 2025

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Outcomes of FOLFIRINOX versus gemcitabine plus nab-paclitaxel in patients with early recurrent pancreatic cancer after adjuvant S-1 treatment: A propensity score-matched analysis.
Naohiro Okano, Kentaro Sakamaki, Takafumi Mie, Kazuo Watanabe, Satoshi Kobayashi, Masato Ozaka

Pancreatology· September 2025

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Multicenter Retrospective Study of Efficacy of Systemic Therapy in Patients with Neuroendocrine Tumor Grade 3 (JOSC-2001).
Hiroyuki Okuyama, Taro Shibuki, Naohiro Okano, Takuro Mizukami, Hiroaki Yanagimoto, Masato Ozaka

Neuroendocrinology· September 2025

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Impact of ERCC1 on the outcomes of chemotherapy in advanced biliary tract cancer.
Yasunari Sakamoto, Chigusa Morizane, Takuji Okusaka, Junki Mizusawa, Nobuyoshi Hiraoka, Masato Ozaka

Sci Rep· September 2025

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Resectable Pancreatic Cancer with CA19-9 > 500 U/mL: A Biological Indicator for Survival Benefit with Intensive Neoadjuvant Chemotherapy.
Kojiro Omiya, Atsushi Oba, Kota Sugiura, Aya Maekawa, Takafumi Mie, Masato Ozaka

Ann Surg Oncol· August 2025

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Bone loss, osteoporosis, and fractures in patients with resected pancreatic head cancer.
Tsuyoshi Takeda, Takashi Sasaki, Yosuke Inoue, Takeshi Okamoto, Tatsuki Hirai, Masato Ozaka

Pancreatology· August 2025

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Impact of second-line combination chemotherapy on post-progression survival in metastatic and recurrent pancreatic cancer.
Takafumi Mie, Masato Ozaka, Takeshi Okamoto, Tsuyoshi Takeda, Yoichiro Sato

Int J Clin Oncol· August 2025

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Clinical predictors of KRAS mutation detection in liquid biopsies for pancreatic ductal adenocarcinoma.
Takaaki Furukawa, Ippei Fukada, Naomi Hayashi, Takeshi Okamoto, Yoichiro Sato, Masato Ozaka

Pancreatology· August 2025

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Pathological complete response following addition of durvalumab to gemcitabine and cisplatin therapy for intrahepatic cholangiocarcinoma with Lynch syndrome-associated mismatch repair deficiency.
Koshiro Fukuda, Akiyoshi Kasuga, Yasuyuki Shigematsu, Kenichiro Kato, Hiromichi Ito, Masato Ozaka

Clin J Gastroenterol· June 2025

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Phase 1/2 study of liposomal irinotecan plus S-1 for metastatic pancreatic cancer refractory to gemcitabine-based treatment.
Hiroshi Imaoka, Masafumi Ikeda, Masato Ozaka, Kotoe Oshima, Naohiro Okano

Eur J Cancer· June 2025

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Efficacy of preoperative endoscopic nasobiliary drainage tube placement for liver cancer adjacent to the hepatic hilum.
Sho Kiritani, Yoshihiro Ono, Takashi Sasaki, Atsushi Oba, Takafumi Sato, Masato Ozaka

Langenbecks Arch Surg· June 2025

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Arterial resection and divestment in pancreatic cancer surgery in the era of multidisciplinary treatment: decadal comparative study.
Yuki Hirose, Atsushi Oba, Yosuke Inoue, Aya Maekawa, Kosuke Kobayashi, Masato Ozaka

BJS Open· March 2025

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[Multidisciplinary treatment for borderline resectable pancreatic cancer].
Takashi Sasaki, Masato Ozaka, Naoki Sasahira

Nihon Shokakibyo Gakkai Zasshi· January 2025

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