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Your search keyword '"Tanaka, Takehiro"' showing total 30 results
Start Over Author "Tanaka, Takehiro" Publisher japanese society of internal medicine
30 results on '"Tanaka, Takehiro"'

1. Endoscopic and Histological Gastritis in University Students with Helicobacter pylori Infection

Author

Okanoue, Shotaro, primary, Sakae, Hiroyuki, additional, Yokota, Kenji, additional, Tanaka, Takehiro, additional, Obayashi, Yuka, additional, Abe, Makoto, additional, Kono, Yoshiyasu, additional, Kanzaki, Hiromitsu, additional, Iwamuro, Masaya, additional, Kawano, Seiji, additional, Kawahara, Yoshiro, additional, Yanai, Hiroyuki, additional, and Okada, Hiroyuki, additional

Published
2024
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2. Zinc Acetate Dihydrate Tablet-associated Gastric Lesions

Author

Iwamuro, Masaya, primary, Tanaka, Takehiro, additional, Kuraoka, Sakiko, additional, Hamada, Kenta, additional, Abe, Makoto, additional, Kono, Yoshiyasu, additional, Kanzaki, Hiromitsu, additional, Kawano, Seiji, additional, Kawahara, Yoshiro, additional, and Okada, Hiroyuki, additional

Published
2022
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7. Risk Factors for Gastric Cancer after the Eradication of Helicobacter pylori Evaluated Based on the Background Gastric Mucosa: A Propensity Score-matched Case-control Study

Author

Obayashi, Yuka, primary, Kawano, Seiji, additional, Sakae, Hiroyuki, additional, Abe, Makoto, additional, Kono, Yoshiyasu, additional, Kanzaki, Hiromitsu, additional, Iwamuro, Masaya, additional, Kawahara, Yoshiro, additional, Tanaka, Takehiro, additional, Yanai, Hiroyuki, additional, and Okada, Hiroyuki, additional

Published
2021
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13. Rapid and Long-term Response of Pulmonary Pleomorphic Carcinoma to Nivolumab

Author

Senoo, Satoru, primary, Ninomiya, Takashi, additional, Makimoto, Go, additional, Nishii, Kazuya, additional, Kano, Hirohisa, additional, Watanabe, Hiromi, additional, Hata, Yusuke, additional, Kubo, Toshio, additional, Tanaka, Takehiro, additional, Hotta, Katsuyuki, additional, Maeda, Yoshinobu, additional, and Kiura, Katsuyuki, additional

Published
2019
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23. Intramucosal Gastric Mixed Adenoneuroendocrine Carcinoma Completely Resected with Endoscopic Submucosal Dissection

Author

Yamasaki, Yasushi, primary, Nasu, Junichiro, additional, Miura, Kou, additional, Kono, Yoshiyasu, additional, Kanzaki, Hiromitsu, additional, Hori, Keisuke, additional, Tanaka, Takehiro, additional, Kita, Masahide, additional, Tsuzuki, Takao, additional, Matsubara, Minoru, additional, Kawano, Seiji, additional, Kawahara, Yoshiro, additional, Tabata, Masahiro, additional, Okada, Hiroyuki, additional, and Yamamoto, Kazuhide, additional

Published
2015
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27. Characteristics of Early Gastric Cancer in a Patient with a History of Helicobacter pylori Infection and No History of Eradication Therapy.

Author

Kuraoka S, Kawano S, Ino S, Satomi T, Hamada K, Kono Y, Iwamuro M, Kawahara Y, Tanaka T, Okada H, and Otsuka M

Abstract

Objective The characteristics of gastric cancer in patients with atrophic mucosa and no apparent history of Helicobacter pylori eradication have not been thoroughly investigated. Therefore, this study examined the clinicopathological characteristics of gastric cancer in these patients. Methods We retrospectively examined the endoscopic and pathological characteristics of gastric cancer in patients who underwent endoscopic submucosal dissection. Patients or Materials We divided the patients into 2 groups: those with gastric atrophy and no history of eradication (group A; n =102) and those with a history of eradication (group B; n =161). In group A, patients were further divided into mild atrophy (group C) and severe atrophy (group D) groups, while group B was further divided into those who underwent eradication treatment >5 years ago (group E) and those who underwent eradication 1-5 years ago (group F). Results Group A comprised significantly older individuals (75±8.0 vs. 71±7.5 years old, p <0.001) with a higher frequency of elevated gastric cancer than group B (32.4% vs. 17.4%, p =0.006). Compared with group E, group A was older and had a greater incidence of elevated gastric cancer. The incidence of gastric cancer in the U or M region was lower in group C than in group D. Conclusion Gastric cancer in patients with gastric atrophy and no history of eradication was associated with an older age and higher frequency of elevated-type morphology than in those with a history of eradication.

Published
2024
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28. Gastric Mucosa-associated Lymphoid Tissue Lymphoma That Relapsed after 11 Years Subsequent to Achieving Complete Remission.

Author

Inoo S, Iwamuro M, Tanaka T, Kawahara Y, and Ootuka M

Subjects
Humans, Male, Adult, Neoplasm Recurrence, Local, Helicobacter pylori isolation & purification, Time Factors, Lymphoma, B-Cell, Marginal Zone diagnosis, Stomach Neoplasms diagnosis, Remission Induction, Helicobacter Infections complications, Helicobacter Infections drug therapy
Abstract

A 38-year-old Japanese man was diagnosed with extranodal marginal zone lymphoma of the mucosa-associated lymphoid tissue in the stomach (gastric MALT lymphoma). Fluorescence in situ hybridization analysis revealed the absence of t (11;18) (q21;q21) translocation but the presence of extra copies of MALT1, indicating tetrasomy 18. Helicobacter pylori eradication led to complete remission (CR). However, the gastric MALT lymphoma relapsed after 11 years old. This case underscores the need for long-term observation (>10 years) of patients with gastric MALT lymphoma. Further investigation is warranted to elucidate the correlation between trisomy/tetrasomy 18 and the recurrence propensity.

Published
2024
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29. Idiopathic Gastric Antral Ulcers.

Author

Iwamuro M, Tanaka T, Kawano S, Kawahara Y, and Otsuka M

Subjects
Humans, Female, Middle Aged, Gastroscopy, Stomach Ulcer diagnosis, Stomach Ulcer complications, Pyloric Antrum pathology, Pyloric Antrum diagnostic imaging
Abstract

A Japanese woman presented with gastric antral ulcers accompanied by erosion and edema, demonstrating a chronic pattern of improvement and recurrence for more than six years. The patient had no relevant treatment history, and Helicobacter pylori infection was ruled out. Other potential etiologies contributing to gastric ulcers were eliminated on the basis of endoscopic biopsy and blood laboratory findings. Consequently, the patient was diagnosed with idiopathic gastric antral ulcer. This disease is often overlooked, and the chronological endoscopic images provided in this report can be used as a reference.

Published
2024
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30. Clinicopathological Characteristics of Superficial Barrett's Adenocarcinoma in a Japanese Population: A Retrospective, Multicenter Study.

Author

Hamada K, Kanzaki H, Miyahara K, Nakagawa M, Mouri H, Mizuno M, Takahashi S, Hori S, Nasu J, Tsuzuki T, Miyaike J, Takenaka R, Yamauchi K, Kobayashi S, Toyokawa T, Inoue M, Nishimura M, Matsubara M, Tomoda J, Yamasaki Y, Tanaka T, Shirakawa Y, Kawahara Y, Fujiwara T, and Okada H

Subjects
Humans, Japan epidemiology, Retrospective Studies, Adenocarcinoma epidemiology, Adenocarcinoma etiology, Adenocarcinoma surgery, Barrett Esophagus epidemiology, Barrett Esophagus pathology, Esophageal Neoplasms epidemiology, Esophageal Neoplasms etiology, Esophageal Neoplasms surgery
Abstract

Objective Although Barrett's adenocarcinoma (BA) remains a minor disease in Japan, its incidence has been gradually increasing. We analyzed the characteristics of BA in Japanese populations. Methods We retrospectively reviewed medical records and analyzed the clinicopathological differences between short-segment Barrett's esophagus (SSBE) and long-segment Barrett's esophagus (LSBE), as well as metastasis. Local recurrence and metachronous lesions were analyzed only in patients who underwent endoscopic resection (ER). Patients Consecutive patients who had pathological T1 BAs resected by ER or surgery from January 2003 to December 2017. Results A total of 168 patients were analyzed, including 139 with SSBE and 29 with LSBE. In total, 67% of the SSBE lesions and 32% of the LSBE lesions were located between 0 and 3 o'clock (p=0.0014). No patients who achieved pathological margin-free resection (pR0) and 17% of patients who did not achieve pR0 experienced local recurrence (p=0.0131). None of the patients without lymphovascular involvement, a poorly differentiated component, lesion size of >30 mm, and submucosal invasion of >500 μm experienced metastasis. The 5-year cumulative incidence rate of metachronous BA after ER was 0% in patients with SSBE and 40% in patients with LSBE (p=0.0005). Conclusion Superficial BA was likely to be detected at the right anterior wall of SSBE in the Japanese population. The risk for metachronous BA after ER was high in Japanese patients with LSBE, as in Western patients.

Published
2022
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