Search

Your search keyword '"Isao Matsumoto, MD, PhD"' showing total 2 results
Start Over Author "Isao Matsumoto, MD, PhD"
2 results on '"Isao Matsumoto, MD, PhD"'

1. Reoperation of Pulmonary Artery Intimal Sarcoma for Recurrence After Pulmonary Artery Replacement

Author

Kentaro Miyazaki, MD, Isao Matsumoto, MD, PhD, Satoshi Nishikawa, MD, Takashi Wada, MD, Tetsuya Takayama, MD, Daisuke Saito, MD, PhD, Shuhei Yoshida, MD, PhD, Kenji Iino, MD, PhD, and Hirofumi Takemura, MD, PhD

Subjects
Surgery, RD1-811, Diseases of the circulatory (Cardiovascular) system, RC666-701
Abstract

Pulmonary artery intimal sarcoma has very poor prognosis, for which radical resection may be difficult. A 68-year-old man with pulmonary artery intimal sarcoma underwent bilateral pulmonary artery resection and replacement. At 31 months postoperatively, recurrence occurred at the anastomotic site of the right pulmonary artery. Therefore, he underwent right upper lobectomy and combined resection and reconstruction of the right pulmonary artery. The tumor was removed, while preserving the lungs as much as possible. He is still alive 42 months after the initial surgery.

Published
2024
Full Text
View/download PDF

2. The Tumor Immune Microenvironment Is Associated With Recurrence in Early-Stage Lung Adenocarcinoma

Author

Hiroaki Kanemura, MD, MPH, PhD, Toshihide Yokoyama, MD, Ryu Nakajima, MD, PhD, Atsushi Nakamura, MD, PhD, Hiroaki Kuroda, MD, PhD, Yoshitaka Kitamura, MD, PhD, Hiroyasu Shoda, MD, PhD, Nobuaki Mamesaya, MD, PhD, Yoshihiro Miyata, MD, PhD, Tatsuro Okamoto, MD, PhD, Kyoichi Okishio, MD, PhD, Masahide Oki, MD, PhD, Yuichi Sakairi, MD, PhD, Toyofumi Fengshi Chen-Yoshikawa, MD, PhD, Tadashi Aoki, MD, Tatsuo Ohira, MD, PhD, Isao Matsumoto, MD, PhD, Kiyonobu Ueno, MD, PhD, Takuro Miyazaki, MD, PhD, Haruhisa Matsuguma, MD, PhD, Hideoki Yokouchi, MD, PhD, Tomoyuki Otani, MD, Akihiko Ito, MD, PhD, Kazuko Sakai, PhD, Yasutaka Chiba, PhD, Kazuto Nishio, MD, PhD, Nobuyuki Yamamoto, MD, PhD, Isamu Okamoto, MD, PhD, Kazuhiko Nakagawa, MD, PhD, and Masayuki Takeda, MD, PhD

Subjects
Non–small cell lung cancer, Adjuvant chemotherapy, Cancer stem cell, Tumor immune microenvironment, Neoplasms. Tumors. Oncology. Including cancer and carcinogens, RC254-282
Abstract

Introduction: Immune checkpoint inhibitors have recently been approved for the treatment of early-stage NSCLC in the perioperative setting on the basis of phase 3 trials. However, the characteristics of such patients who are susceptible to recurrence after adjuvant chemotherapy or who are likely to benefit from postoperative immunotherapy have remained unclear. Methods: This biomarker study (WJOG12219LTR) was designed to evaluate cancer stem cell markers (CD44 and CD133), programmed death-ligand 1 (PD-L1) expression on tumor cells, CD8 expression on tumor-infiltrating lymphocytes, and tumor mutation burden in completely resected stage II to IIIA NSCLC with the use of archived DNA and tissue samples from the prospective WJOG4107 trial. Tumors were classified as inflamed or noninflamed on the basis of the PD-L1 tumor proportion score and CD8+ tumor-infiltrating lymphocyte density. The association between each potential biomarker and relapse-free survival (RFS) during adjuvant chemotherapy was assessed by Kaplan-Meier analysis. Results: A total of 117 patients were included in this study. The median RFS was not reached (95% confidence intervals [CI]: 22.4 mo–not reached; n = 39) and 23.7 months (95% CI: 14.5–43.6; n = 41) in patients with inflamed or noninflamed adenocarcinoma, respectively (log-rank p = 0.02, hazard ratio of 0.52 [95% CI: 0.29–0.93]). Analysis of the combination of tumor inflammation category and TP53 mutation status revealed that inflamed tumors without TP53 mutations were associated with the longest RFS. Conclusions: PD-L1 expression on tumor cells, CD8+ T cell infiltration, and TP53 mutation status may help identify patients with early-stage NSCLC susceptible to recurrence after adjuvant chemotherapy.

Published
2024
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results