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Author Wataru Yamagami

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The trend and outcome of postsurgical therapy for high-risk early-stage cervical cancer with lymph node metastasis in Japan: a report from the Japan Society of Gynecologic Oncology (JSGO) guidelines evaluation committee.

Masae Ikeda, Masako Shida, Shogo Shigeta, Satoru Nagase, Fumiaki Takahashi, Wataru Yamagami, Hidetaka Katabuchi, Nobuo Yaegashi, Daisuke Aoki, Mikio Mikami,

<h4>Objective</h4>The Japan Society of Gynecologic Oncology published the first guidelines for the treatment of cervical cancer in 2007. The aim of this research was to evaluate the influence of the introduction of the first guideline on clinical trends and outcomes of patients with early-stage cervical cancer who underwent surgery.<h4>Methods</h4>This analysis ... Read more >>

J Gynecol Oncol (Journal of gynecologic oncology)
[2021, 32(3):e44]

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Survey of the clinical practice pattern of using sentinel lymph node biopsy in patients with gynecological cancers in Japan: the Japan Society of Gynecologic Oncology study.

Shinichi Togami, Hiroaki Kobayashi, Hitoshi Niikura, Muneaki Shimada, Nobuyuki Susumu, Tomohito Tanaka, Yoshito Terai, Tomoyuki Nagai, Tsukasa Baba, Hideaki Yahata, Wataru Yamagami, Ken Yamaguchi, Tsuyoshi Yamashita, Nobuo Yaegashi, Hidetaka Katabuchi, Daisuke Aoki,

<h4>Background</h4>Sentinel lymph node (SN) biopsy is essential for evaluating survival and minimal treatment-related morbidity associated with cervical, endometrial, and vulvar cancer in Japan. As such, our aim in this study was to evaluate the current practice pattern of using SN biopsy for cervical, endometrial, and vulvar cancer in Japan.<h4>Methods</h4>We deployed ... Read more >>

Int J Clin Oncol (International journal of clinical oncology)
[2021, :]

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Atypical vessels in hysteroscopy: Usefulness in prediction of malignant diseases in patients treated with tamoxifen.

Emiko Oka, Kensuke Sakai, Wataru Yamagami, Takuro Hirano, Takeshi Makabe, Tomoko Yoshihama, Tatsuyuki Chiyoda, Fumio Kataoka, Kouji Banno, Daisuke Aoki,

<h4>Aim</h4>Tamoxifen (TAM) is widely used in adjuvant endocrine therapy for invasive breast cancer as a selective estrogen modulator, but this treatment has a risk of developing endometrial malignancy. However, hysteroscopic findings during or after TAM treatment are unclear. The aim of this study is to examine the association between hysteroscopic ... Read more >>

J Obstet Gynaecol Res (The journal of obstetrics and gynaecology research)
[2021, 47(4):1510-1515]

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A prospective cohort study on the safety and efficacy of bevacizumab combined with chemotherapy in Japanese patients with relapsed ovarian, fallopian tube or primary peritoneal cancer.

Yoshiko Nanki, Hiroyuki Nomura, Naomi Iwasa, Keiko Saotome, Ai Dozen, Tomoko Yoshihama, Takuro Hirano, Shiho Hashimoto, Tatsuyuki Chiyoda, Wataru Yamagami, Fumio Kataoka, Daisuke Aoki,

<h4>Objective</h4>this prospective cohort study aimed to assess the safety and efficacy of bevacizumab combined with chemotherapy in Japanese patients with relapsed ovarian, fallopian tube or primary peritoneal cancer.<h4>Methods</h4>in this study, 40 Japanese patients with relapsed ovarian, fallopian tube or primary peritoneal cancer selected to receive bevacizumab with chemotherapy were enrolled. ... Read more >>

Jpn J Clin Oncol (Japanese journal of clinical oncology)
[2021, 51(1):54-59]

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Impact of lymphadenectomy on the treatment of endometrial cancer using data from the JSOG cancer registry.

Keiko Saotome, Wataru Yamagami, Hiroko Machida, Yasuhiko Ebina, Yoichi Kobayashi, Tsutomu Tabata, Masanori Kaneuchi, Satoru Nagase, Takayuki Enomoto, Daisuke Aoki, Mikio Mikami,

<h4>Objective</h4>Regional lymph node (LN) dissection is a standard surgical procedure for endometrial cancer, but there is currently no clear consensus on its therapeutic significance. We aimed to determine the impact of regional LN dissection on the outcome of endometrial cancer.<h4>Methods</h4>Study subjects comprised 36,813 patients who were registered in the gynecological ... Read more >>

Obstet Gynecol Sci (Obstetrics & gynecology science)
[2021, 64(1):80-89]

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Evaluating the importance of routine drainage following laparoscopic pelvic lymph node dissection for gynecological malignancies.

Kensuke Sakai, Masaru Nakamura, Wataru Yamagami, Tatsuyuki Chiyoda, Yusuke Kobayashi, Hiroshi Nishio, Shigenori Hayashi, Hiroyuki Nomura, Fumio Kataoka, Eiichiro Tominaga, Kouji Banno, Daisuke Aoki,

<h4>Objective</h4>To determine the efficacy of drainage following pelvic lymph node (PLN) dissection, especially for cases involving laparoscopic surgery.<h4>Methods</h4>In this retrospective study, 368 patients with malignant gynecological tumors who underwent systemic PLN dissection at Keio University Hospital between January 2012 and October 2018 were enrolled. Drainage tubes were placed in the ... Read more >>

Int J Gynaecol Obstet (International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics)
[2020, :]

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Germline multigene panel testing revealed a BRCA2 pathogenic variant in a patient with suspected Lynch syndrome.

Tomoko Yoshihama, Akira Hirasawa, Kokichi Sugano, Teruhiko Yoshida, Mineko Ushiama, Arisa Ueki, Tomoko Akahane, Yoshiko Nanki, Kensuke Sakai, Takeshi Makabe, Wataru Yamagami, Nobuyuki Susumu, Kaori Kameyama, Kenjiro Kosaki, Daisuke Aoki,

There has been a rapid advance in germline multigene panel testing by next-generation sequencing, and it is being widely used in clinical settings. A 56-year-old woman suspected of having Lynch syndrome was identified as a <i>BRCA2</i> pathogenic variant carrier by multigene panel testing. The patient was diagnosed with endometrial cancer ... Read more >>

Int Cancer Conf J (International cancer conference journal)
[2021, 10(1):6-10]

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Uterine cervical cancer associated with obstructed hemivagina and ipsilateral renal agenesis (OHVIRA) syndrome: A case report and review of the literature.

Emiko Oka, Tatsuyuki Chiyoda, Takashi Iwata, Wataru Yamagami, Daisuke Aoki,

•Cervical cancer occurring in patients with OHVIRA syndrome is very rare.•This case reports on HPV-negative adenocarcinoma located in the nonvisible cervix.•Colposcopy and imaging are essential for cervical cancer with uterine malformation.•In OHVIRA syndrome, cervical malignancies may be overlooked. ... Read more >>

Gynecol Oncol Rep (Gynecologic oncology reports)
[2020, 34:100645]

Cited: 1 time

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Impact of the COVID-19 epidemic at a high-volume facility in gynecological oncology in Tokyo, Japan: a single-center experience.

Yuya Nogami, Yusuke Kobayashi, Kosuke Tsuji, Megumi Yokota, Hiroshi Nishio, Masaru Nakamura, Wataru Yamagami, Tohru Morisada, Eiichiro Tominaga, Kouji Banno, Daisuke Aoki,

<h4>Background</h4>The number of cases of novel coronavirus disease 2019 (COVID-19) in Japan have risen since the first case was reported on January 24, 2020, and 6225 infections have been reported as of June 30, 2020. On April 8, 2020, our hospital began screening patients via pre-admission reverse transcriptase-polymerase chain reaction ... Read more >>

J Ovarian Res (Journal of ovarian research)
[2020, 13(1):105]

Cited: 1 time

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Evaluation of safety and diagnostic performance for flexible hysteroscopy in 1591 outpatient cases.

Yusuke Kobayashi, Kosuke Tsuji, Kanako Nakamura, Shimpei Nagai, Takayuki Takahashi, Arata Kobayashi, Mayuka Anko, Takuro Hirano, Keiko Watanabe, Yusuke Matoba, Haruko Kunitomi, Masataka Adachi, Wataru Yamagami, Eiichiro Tominaga, Kouji Banno, Daisuke Aoki,

<h4>Background</h4>To date, only few large studies are available concerning the safety and diagnostic concordance rates of outpatient flexible hysteroscopy. In our institution, outpatient hysteroscopy has been routinely and educationally applied Kosuke Tsuji to intrauterine lesions; thus, we retrospectively investigated the institution's outpatient flexible hysteroscopy cases.<h4>Methods</h4>A total of 1591 cases of ... Read more >>

Jpn J Clin Oncol (Japanese journal of clinical oncology)
[2020, 50(10):1157-1161]

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Clinical implications of next-generation sequencing-based panel tests for malignant ovarian tumors.

Keiko Saotome, Tatsuyuki Chiyoda, Eriko Aimono, Kohei Nakamura, Shigeki Tanishima, Sachio Nohara, Chihiro Okada, Hideyuki Hayashi, Yuka Kuroda, Hiroyuki Nomura, Nobuyuki Susumu, Takashi Iwata, Wataru Yamagami, Fumio Kataoka, Hiroshi Nishihara, Daisuke Aoki,

Precision medicine based on cancer genomics is being applied in clinical practice. However, patients do not always derive benefits from genomic testing. Here, we performed targeted amplicon exome sequencing-based panel tests, including 160 cancer-related genes (PleSSision-160), on 88 malignant ovarian tumors (high-grade serous carcinoma, 27; endometrioid carcinoma, 15; clear cell ... Read more >>

Cancer Med (Cancer medicine)
[2020, 9(20):7407-7417]

Cited: 1 time

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Patient-derived ovarian cancer organoids capture the genomic profiles of primary tumours applicable for drug sensitivity and resistance testing.

Yoshiko Nanki, Tatsuyuki Chiyoda, Akira Hirasawa, Aki Ookubo, Manabu Itoh, Masaru Ueno, Tomoko Akahane, Kaori Kameyama, Wataru Yamagami, Fumio Kataoka, Daisuke Aoki,

The use of primary patient-derived organoids for drug sensitivity and resistance testing could play an important role in precision cancer medicine. We developed expandable ovarian cancer organoids in < 3 weeks; these organoids captured the characteristics of histological cancer subtypes and replicated the mutational landscape of the primary tumours. Seven pairs of organoids ... Read more >>

Sci Rep (Scientific reports)
[2020, 10(1):12581]

Cited: 4 times

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Epidemiological guideline influence on the therapeutic trend and patient outcome of uterine cervical cancer in Japan: Japan society of gynecologic oncology guideline evaluation committee project.

Shogo Shigeta, Masako Shida, Satoru Nagase, Masae Ikeda, Fumiaki Takahashi, Takeo Shibata, Wataru Yamagami, Hidetaka Katabuchi, Nobuo Yaegashi, Daisuke Aoki, Mikio Mikami,

<h4>Objective</h4>The Japan Society of Gynecologic Oncology published its first clinical guidelines for uterine cervical cancer in 2007 which has been revised twice in 2011 and 2017. The aim of this study was to investigate the influence of the first guideline publication on the therapeutic trend and patient outcome by analyzing ... Read more >>

Gynecol Oncol (Gynecologic oncology)
[2020, 159(1):248-255]

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Proposal of a Two-Tier System in Grouping Adenocarcinoma of the Uterine Cervix.

Hiroko Machida, Koji Matsuo, Shinya Matsuzaki, Wataru Yamagami, Yasuhiko Ebina, Yoichi Kobayashi, Tsutomu Tabata, Masanori Kaneuchi, Satoru Nagase, Takayuki Enomoto, Mikio Mikami,

(1) Background: This study examined the use of a two-tier system in grouping cervical adenocarcinoma for survival discrimination. (2) Methods: A nationwide retrospective observational cohort study was conducted using the Japan Society of Gynecologic Oncology tumor registry database from 2001 to 2015 (n = 86,754). Adenocarcinoma subtypes were grouped as ... Read more >>

Cancers (Basel) (Cancers)
[2020, 12(5):]

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Identification of a novel uterine leiomyoma GWAS locus in a Japanese population.

Kensuke Sakai, Chizu Tanikawa, Akira Hirasawa, Tatsuyuki Chiyoda, Wataru Yamagami, Fumio Kataoka, Nobuyuki Susumu, Chikashi Terao, Yoichiro Kamatani, Atsushi Takahashi, Yukihide Momozawa, Makoto Hirata, Michiaki Kubo, Nobuo Fuse, Takako Takai-Igarashi, Atsushi Shimizu, Akimune Fukushima, Aya Kadota, Kokichi Arisawa, Hiroaki Ikezaki, Kenji Wakai, Taiki Yamaji, Norie Sawada, Motoki Iwasaki, Shoichiro Tsugane, Daisuke Aoki, Koichi Matsuda,

Uterine leiomyoma is one of the most common gynaecologic benign tumours, but its genetic basis remains largely unknown. Six previous GWAS identified 33 genetic factors in total. Here, we performed a two-staged GWAS using 13,746 cases and 70,316 controls from the Japanese population, followed by a replication analysis using 3,483 ... Read more >>

Sci Rep (Scientific reports)
[2020, 10(1):1197]

Cited: 2 times

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A retrospective study for investigating the relationship between old and new staging systems with prognosis in ovarian cancer using gynecologic cancer registry of Japan Society of Obstetrics and Gynecology (JSOG): disparity between serous carcinoma and clear cell carcinoma.

Wataru Yamagami, Satoru Nagase, Fumiaki Takahashi, Kazuhiko Ino, Toru Hachisuga, Mikio Mikami, Takayuki Enomoto, Hidetaka Katabuchi, Daisuke Aoki,

OBJECTIVE:International Federation of Gynecology and Obstetrics (FIGO) staging for ovarian, fallopian tube, and peritoneal cancers was revised in 2014. The aim of this study is to clarify whether the revised FIGO2014 staging reflects the prognosis of patients with ovarian cancer by histological type in Japan. METHODS:We extracted 9,747 patients who ... Read more >>

J Gynecol Oncol (Journal of gynecologic oncology)
[2020, 31(4):e45]

Cited: 2 times

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Japan Society of Gynecologic Oncology 2018 guidelines for treatment of uterine body neoplasms.

Wataru Yamagami, Mikio Mikami, Satoru Nagase, Tsutomu Tabata, Yoichi Kobayashi, Masanori Kaneuchi, Hiroaki Kobayashi, Hidekazu Yamada, Kiyoshi Hasegawa, Hiroyuki Fujiwara, Hidetaka Katabuchi, Daisuke Aoki,

The Fourth Edition of the Guidelines for Treatment of Uterine Body Neoplasm was published in 2018. These guidelines include 9 chapters: 1. Overview of the guidelines, 2. Initial treatment for endometrial cancer, 3. Postoperative adjuvant therapy for endometrial cancer, 4. Post-treatment surveillance for endometrial cancer, 5. Treatment for advanced or ... Read more >>

J Gynecol Oncol (Journal of gynecologic oncology)
[2020, 31(1):e18]

Cited: 4 times

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Intraoperative Capsule Rupture, Postoperative Chemotherapy, and Survival of Women With Stage I Epithelial Ovarian Cancer.

Koji Matsuo, Hiroko Machida, Wataru Yamagami, Yasuhiko Ebina, Yoichi Kobayashi, Tsutomu Tabata, Masanori Kaneuchi, Satoru Nagase, Takayuki Enomoto, Mikio Mikami,

<h4>Objective</h4>To examine the incidence and prognostic effects of intraoperative capsule rupture and to assess the effectiveness of postoperative chemotherapy for intraoperative tumor rupture in apparent stage I epithelial ovarian cancer.<h4>Methods</h4>This is a society-based retrospective observational study in Japan that examined 15,163 women with stage IA-IC1 epithelial ovarian cancer who underwent ... Read more >>

Obstet Gynecol (Obstetrics and gynecology)
[2019, 134(5):1017-1026]

Cited: 5 times

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Erratum: Aurora kinase inhibitors: Potential molecular-targeted drugs for gynecologic malignant tumors (Review).

Kiyoko Umene, Kouji Banno, Iori Kisu, Megumi Yanokura, Yuya Nogami, Kosuke Tsuji, Kenta Masuda, Arisa Ueki, Yusuke Kobayashi, Wataru Yamagami, Hiroyuki Nomura, Eiichiro Tominaga, Nobuyuki Susumu, Daisuke Aoki,

[This corrects the article DOI: 10.3892/br.2013.91.]. ... Read more >>

Biomed Rep (Biomedical reports)
[2019, 11(6):274]

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Hysteroscopic Photodynamic Diagnosis Using 5-Aminolevulinic Acid: A High-Sensitivity Diagnostic Method for Uterine Endometrial Malignant Diseases.

Yusuke Matoba, Kouji Banno, Iori Kisu, Yusuke Kobayashi, Kosuke Tsuji, Shimpei Nagai, Wataru Yamagami, Masaru Nakamura, Eiichiro Tominaga, Miho Kawaida, Daisuke Aoki,

<h4>Study objective</h4>To examine the diagnostic accuracy of hysteroscopic photodynamic diagnosis (PDD) using 5-aminolevulinic acid (5ALA) in patients with endometrial cancer and premalignant atypical endometrial hyperplasia.<h4>Design</h4>A single-center, open-label, exploratory intervention study.<h4>Setting</h4>University Hospital in Japan.<h4>Patients</h4>Thirty-four patients who underwent hysteroscopic resection in the Department of Obstetrics and Gynecology at Keio University Hospital.<h4>Interventions</h4>Patients were ... Read more >>

J Minim Invasive Gynecol (Journal of minimally invasive gynecology)
[2020, 27(5):1087-1094]

Cited: 0 times

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Trends and characteristics of epithelial ovarian cancer in Japan between 2002 and 2015: A JSGO-JSOG joint study.

Hiroko Machida, Koji Matsuo, Wataru Yamagami, Yasuhiko Ebina, Yoichi Kobayashi, Tsutomu Tabata, Masanori Kanauchi, Satoru Nagase, Takayuki Enomoto, Mikio Mikami,

<h4>Objective</h4>To examine the trends of epithelial ovarian cancer histologic subtypes in Japan.<h4>Methods</h4>A nationwide retrospective registry study was performed between 2002 and 2015 (Japan cohort, n = 48,640). Trends were also examined in The Surveillance, Epidemiology, and End Results Program (US cohort, n = 49,936). Time-specific proportional changes of four major histological subtypes (serous, clear ... Read more >>

Gynecol Oncol (Gynecologic oncology)
[2019, 153(3):589-596]

Cited: 17 times

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Quality indicators for cervical cancer care in Japan.

Tomone Watanabe, Mikio Mikami, Hidetaka Katabuchi, Shingo Kato, Masanori Kaneuchi, Masahiro Takahashi, Hidekatsu Nakai, Satoru Nagase, Satoru Nagase, Hitoshi Niikura, Masaki Mandai, Yasuyuki Hirashima, Hiroyuki Yanai, Wataru Yamagami, Satoru Kamitani, Takahiro Higashi,

<h4>Objective</h4>We aimed to propose a set of quality indicators (QIs) based on the clinical guidelines for cervical cancer treatment published by The Japan Society of Gynecologic Oncology, and to assess adherence to standard-of-care as an index of the quality of care for cervical cancer in Japan.<h4>Methods</h4>A panel of clinical experts ... Read more >>

J Gynecol Oncol (Journal of gynecologic oncology)
[2018, 29(6):e83]

Cited: 1 time

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GSTP1 rs1695 is associated with both hematological toxicity and prognosis of ovarian cancer treated with paclitaxel plus carboplatin combination chemotherapy: a comprehensive analysis using targeted resequencing of 100 pharmacogenes.

Tomoko Yoshihama, Koya Fukunaga, Akira Hirasawa, Hiroyuki Nomura, Tomoko Akahane, Fumio Kataoka, Wataru Yamagami, Daisuke Aoki, Taisei Mushiroda,

<h4>Purpose</h4>To find genetic variants that predicted toxicity and/or efficacy of paclitaxel plus carboplatin combination therapy (TC therapy).<h4>Patients and methods</h4>In a retrospective case-control study, we analyzed 320 patients who had received TC therapy for gynecological cancers (ovarian, fallopian tube, peritoneal, uterine, and cervical cancers) and collected their germline DNA. We performed ... Read more >>

Oncotarget (Oncotarget)
[2018, 9(51):29789-29800]

Cited: 5 times

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Intravenous low-grade endometrial stromal sarcoma with intracardiac extension: A CASE OF inaccurate tumor location on contrast-enhanced computed tomography.

Yuya Nogami, Wataru Yamagami, Junko Maki, Kouji Banno, Nobuyuki Susumu, Koichi Tomita, Kentaro Matsubara, Hideaki Obara, Yuko Kitagawa, Daisuke Aoki,

We herein report a case of low-grade endometrial stromal sarcoma with intracardiac extension in a 58-year-old woman with a uterine tumor with intravascular involvement. The tumor was suspected preoperatively to be an endometrial stromal sarcoma by magnetic resonance imaging. The extent of intravascular involvement was determined to be below the ... Read more >>

Mol Clin Oncol (Molecular and clinical oncology)
[2016, 4(2):179-182]

Cited: 2 times

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Is repeated high-dose medroxyprogesterone acetate (MPA) therapy permissible for patients with early stage endometrial cancer or atypical endometrial hyperplasia who desire preserving fertility?

Wataru Yamagami, Nobuyuki Susumu, Takeshi Makabe, Kensuke Sakai, Hiroyuki Nomura, Fumio Kataoka, Akira Hirasawa, Kouji Banno, Daisuke Aoki,

OBJECTIVE:Reports on the repeated administration of medroxyprogesterone acetate (MPA) for intrauterine recurrence after fertility-preserving therapy for atypical endometrial hyperplasia (AEH) and early grade 1 endometrioid carcinoma (G1) are lacking. We aimed to clarify the outcomes of repeated MPA therapy in cases of intrauterine recurrence after fertility-preserving therapy with MPA against ... Read more >>

J Gynecol Oncol (Journal of gynecologic oncology)
[2018, 29(2):e21]

Cited: 4 times

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