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184 results on '"Yokota, Keiichiro"'

14. 胃癌術後における血清亜鉛値の評価

Author

Namikawa, Tsutomu, primary, Tanaka, Tomoki, additional, Utsuomiya, Masato, additional, Yokota, Keiichiro, additional, Kawanishi, Yasuhiro, additional, Fujisawa, Kazune, additional, Munekage, Masaya, additional, Maeda, Hiromichi, additional, Kitagawa, Hiroyuki, additional, Kobayashi, Michiya, additional, Hanazaki, Kazuhiro, additional, and Seo, Satoru, additional

Published
2024
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24. Gastric cancer with Fanconi anemia in adolescent and young adult patient diagnosed by comprehensive genome profiling using next-generation sequencing

Author

Namikawa, Tsutomu, primary, Tanaka, Tomoki, additional, Utsunomiya, Masato, additional, Yokota, Keiichiro, additional, Munekage, Masaya, additional, Maeda, Hiromichi, additional, Kitagawa, Hiroyuki, additional, Kurioka, Yusuke, additional, Satake, Hironaga, additional, Kobayashi, Michiya, additional, Hanazaki, Kazuhiro, additional, and Seo, Satoru, additional

Published
2023
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29. A Case of Tracheoesophageal Fistula in a Non-metastatic Site During Lenvatinib Treatment for Hepatocellular Carcinoma

Author

YOKOTA, KEIICHIRO, KITAGAWA, HIROYUKI, OKAMOTO, KEN, NAMIKAWA, TSUTOMU, MAEDA, HIROMICHI, KOBAYASHI, MICHIYA, and SEO, SATORU

Subjects
Research Article
Abstract

Background/Aim: We report a case of tracheo-esophageal fistula at a non-metastatic site during lenvatinib treatment of hepatocellular carcinoma with multiple bone metastases. Case Report: A 58-year-old male patient was diagnosed with hepatocellular carcinoma with multiple bone metastases and was treated with atezolizumab-bevacizumab. However, as the bone metastasis progressed, palliative radiation therapy was administered to the third thoracic vertebra, and lenvatinib was administered as a second-line treatment. The patient was hospitalized for aspiration pneumonia five months later. Chest computed tomography and bronchoscopy revealed a 5 cm tracheoesophageal fistula located 3 cm cranial to the carina. We diagnosed a benign tracheoesophageal fistula due to lenvatinib because his previous CT scan showed no metastases at the site of the fistula, and we performed esophageal bypass surgery 4 weeks after discontinuation of the lenvatinib. Conclusion: To the best of our knowledge, this is the first case report of tracheoesophageal fistula at a nonmetastatic site during lenvatinib treatment for hepatocellular carcinoma.

Published
2023

30. Laparoscopic treatment for multiple huge diospyrobezoars in the stomach

Author

Namikawa, Tsutomu, primary, Utsunomiya, Masato, additional, Yokota, Keiichiro, additional, Maeda, Hiromichi, additional, Kitagawa, Hiroyuki, additional, Martins, Rogério Nascimento, additional, Suganuma, Narufumi, additional, Kobayashi, Michiya, additional, Hanazaki, Kazuhiro, additional, and Seo, Satoru, additional

Published
2023
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31. Data from Anti-Glypican-1 Antibody–drug Conjugate as Potential Therapy Against Tumor Cells and Tumor Vasculature for Glypican-1–Positive Cholangiocarcinoma

Author

Yokota, Keiichiro, primary, Serada, Satoshi, primary, Tsujii, Shigehiro, primary, Toya, Keisuke, primary, Takahashi, Tsuyoshi, primary, Matsunaga, Takashi, primary, Fujimoto, Minoru, primary, Uemura, Sunao, primary, Namikawa, Tsutomu, primary, Murakami, Ichiro, primary, Kobayashi, Shogo, primary, Eguchi, Hidetoshi, primary, Doki, Yuichiro, primary, Hanazaki, Kazuhiro, primary, and Naka, Tetsuji, primary

Published
2023
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32. Table S2 from Anti-Glypican-1 Antibody–drug Conjugate as Potential Therapy Against Tumor Cells and Tumor Vasculature for Glypican-1–Positive Cholangiocarcinoma

Author

Yokota, Keiichiro, primary, Serada, Satoshi, primary, Tsujii, Shigehiro, primary, Toya, Keisuke, primary, Takahashi, Tsuyoshi, primary, Matsunaga, Takashi, primary, Fujimoto, Minoru, primary, Uemura, Sunao, primary, Namikawa, Tsutomu, primary, Murakami, Ichiro, primary, Kobayashi, Shogo, primary, Eguchi, Hidetoshi, primary, Doki, Yuichiro, primary, Hanazaki, Kazuhiro, primary, and Naka, Tetsuji, primary

Published
2023
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33. Figure S1 from Anti-Glypican-1 Antibody–drug Conjugate as Potential Therapy Against Tumor Cells and Tumor Vasculature for Glypican-1–Positive Cholangiocarcinoma

Author

Yokota, Keiichiro, primary, Serada, Satoshi, primary, Tsujii, Shigehiro, primary, Toya, Keisuke, primary, Takahashi, Tsuyoshi, primary, Matsunaga, Takashi, primary, Fujimoto, Minoru, primary, Uemura, Sunao, primary, Namikawa, Tsutomu, primary, Murakami, Ichiro, primary, Kobayashi, Shogo, primary, Eguchi, Hidetoshi, primary, Doki, Yuichiro, primary, Hanazaki, Kazuhiro, primary, and Naka, Tetsuji, primary

Published
2023
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34. Supplementary Data from Anti-Glypican-1 Antibody–drug Conjugate as Potential Therapy Against Tumor Cells and Tumor Vasculature for Glypican-1–Positive Cholangiocarcinoma

Author

Yokota, Keiichiro, primary, Serada, Satoshi, primary, Tsujii, Shigehiro, primary, Toya, Keisuke, primary, Takahashi, Tsuyoshi, primary, Matsunaga, Takashi, primary, Fujimoto, Minoru, primary, Uemura, Sunao, primary, Namikawa, Tsutomu, primary, Murakami, Ichiro, primary, Kobayashi, Shogo, primary, Eguchi, Hidetoshi, primary, Doki, Yuichiro, primary, Hanazaki, Kazuhiro, primary, and Naka, Tetsuji, primary

Published
2023
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36. Incidence, clinicopathological characteristics, and therapeutic strategy for gastric cancer patients with metastasis to the central nervous system.

Author

Namikawa, Tsutomu, Marui, Akira, Yokota, Keiichiro, Kawanishi, Yasuhiro, Munekage, Masaya, Uemura, Sunao, Maeda, Hiromichi, Kitagawa, Hiroyuki, Kobayashi, Michiya, and Hanazaki, Kazuhiro

Subjects
STOMACH cancer, CENTRAL nervous system, METASTASIS, EPIDERMAL growth factor receptors, CANCER patients
Abstract

Aim: This study aimed to analyze the clinicopathologic features and treatment outcomes of central nervous system (CNS) metastasis from gastric cancer. Methods: A total of 419 patients diagnosed with unresectable advanced or recurrent gastric cancer at Kochi Medical School between January 2007 and December 2021 were evaluated. Data of patients were reviewed, and clinicopathological information and survival outcomes of those with CNS metastases were compared to patients without CNS metastases. Results: In total, 12/419 (2.9%) patients (median age: 66.5 years [range, 41–82 years]) were diagnosed with CNS metastasis from gastric cancer. Eleven had diffuse‐type gastric cancer which was significantly more common than in those without CNS metastasis (91% vs. 61%, p =.034). Human epidermal growth factor receptor 2 status was positive in one of the 12 patients. The median survival time was significantly lower for patients with CNS metastasis than for those without CNS metastasis (1.8 months vs. 11.4 months, p <.001). The median survival time for patients who underwent surgical resection, radiation, or chemotherapy for CNS metastasis was significantly higher than those who received only best supportive care (3.5 months vs..6 months; p =.007). Conclusions: CNS metastasis was found in 2.9% (12/419) of patients with unresectable advanced or recurrent gastric cancer. Diffuse‐type histology was a risk factor for CNS metastasis. Multidisciplinary treatment, including surgical resection, radiation treatment, or chemotherapy, for CNS metastasis from gastric cancer may benefit selected patients. [ABSTRACT FROM AUTHOR]

Published
2023
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43. Staple line reinforcement for intracorporeal anastomosis reduces time for reconstruction during laparoscopic gastrectomy for gastric cancer Running Τitle: Staple line reinforcement for gastric cancer

Author

Namikawa, Tsutomu, primary, Utsunomiya, Masato, additional, Yokota, Keiichiro, additional, Munekage, Masaya, additional, Uemura, Sunao, additional, Maeda, Hiromichi, additional, Kitagawa, Hiroyuki, additional, Kobayashi, Michiya, additional, and Hanazaki, Kazuhiro, additional

Published
2022
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45. Incidence, clinicopathological characteristics, and therapeutic strategy for gastric cancer patients with metastasis to the central nervous system

Author

Namikawa, Tsutomu, primary, Marui, Akira, additional, Yokota, Keiichiro, additional, Kawanishi, Yasuhiro, additional, Munekage, Masaya, additional, Uemura, Sunao, additional, Maeda, Hiromichi, additional, Kitagawa, Hiroyuki, additional, Kobayashi, Michiya, additional, and Hanazaki, Kazuhiro, additional

Published
2022
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46. Laparoscopic total gastrectomy for concurrent gastric cancer and complete agenesis of the dorsal pancreas.

Author

Namikawa, Tsutomu, Utsunomiya, Masato, Yokota, Keiichiro, Kawanishi, Yasuhiro, Munekage, Masaya, Uemura, Sunao, Maeda, Hiromichi, Kitagawa, Hiroyuki, Kobayashi, Michiya, and Hanazaki, Kazuhiro

Subjects
LYMPHADENECTOMY, STOMACH cancer, GASTRECTOMY, LAPAROSCOPIC surgery, PANCREAS, SPLENIC artery
Abstract

We present an unusual case of laparoscopic total gastrectomy with lymph node dissection in a 56‐year‐old woman with gastric cancer and agenesis of the dorsal pancreas (ADP). Esophagogastroduodenoscopy revealed erosive lesions with thickened gastric folds; biopsy specimens revealed a poorly differentiated adenocarcinoma. Abdominal contrast‐enhanced computed tomography showed a thickened wall of the gastric body; the distal pancreas was not visualized. Under the clinical diagnosis of gastric cancer with ADP, the patient underwent laparoscopic total gastrectomy with standard lymphadenectomy. The absence of a pancreatic neck, body, and tail was confirmed; lymph nodes along the splenic artery were dissected. Pathological analysis demonstrated a poorly differentiated adenocarcinoma invading the serosa, with five lymph node metastases. The postoperative course was unremarkable; postoperative adjuvant chemotherapy was performed using S‐1 plus oxaliplatin. No symptom recurrence was observed at the 6‐month follow‐up. Laparoscopic surgery, with careful preoperative anatomic evaluation, can be considered for concurrent gastric cancer and ADP. [ABSTRACT FROM AUTHOR]

Published
2023
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