Research Achievements - Other -
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Nationwide survey on the transition of treatment protocols after the introduction of insurance coverage for assisted reproductive technology in Japan: The IZANAMI project
51 ( 2 ) e16234 2025.02 [Refereed]
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Comprehensive Study on the Introduction of Add-ons in Assisted Reproductive Technology and Socio-medical Issues
白澤弘光
日本産科婦人科学会雑誌 76 ( 10 ) 1029 - 1037 2024.10
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Iwasawa Takuya, Sakaguchi Taichi, Shirasawa Hiromitsu, Kumazawa Yukiyo, Terada Yukihiro
JAPANESE JOURNAL OF GYNECOLOGIC AND OBSTETRIC ENDOSCOPY ( JAPAN SOCIETY OF GYNECOLOGIC AND OBSTETRIC ENDOSCOPY AND MINIMALLY INVASIVE THERAPY ) 40 ( 1 ) 100 - 104 2024
<p> An intrauterine device (IUD) is a commonly used, reversible contraception. Reports of IUD-related complications have increased, and one of these is uterine perforation at IUD insertion with subsequent migration into the intraperitoneal cavity. This is a rare complication, occurring in approximately 0.2-3.6 per 1000 cases. We report a case of laparoscopic surgery for removal of an IUD that had migrated into the uterine myometrium. A 39-year-old nulliparous woman underwent IUD insertion to prevent intrauterine adhesions after laparoscopic myomectomy (LM). Three months after LM, the IUD could not be removed by pulling the IUD strings. CT and MRI revealed that the IUD had migrated into the uterine myometrium. We removed the IUD by laparoscopic surgery. Insertion of an IUD after myomectomy, especially under anesthesia, carries a risk of uterine perforation. Multiple cross-sectional images on CT and MRI are useful for diagnosing IUD migration into the uterine myometrium.</p>
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DIAMETER OF HUMAN DAY 6 BLASTOCYSTS REFLECTS THE GENETIC HOMOGENEITY OF TROPHECTODERM COMPONENTS
HASEGAWA Hisataka, HASEGAWA Hisataka, TAKAHASHI Kazumasa, KOBAYASHI Tatsuya, KOBAYASHI Tatsuya, KOBAYASHI Tatsuya, IWASAWA Takuya, FUJISHIMA Akiko, TOGASHI Kazue, MAKINO Kenichi, SHIRASAWA Hiromitsu, MIURA Hiroshi, SATO Wataru, KUMAZAWA Yukiyo, KOBAYASHI Junichi, TERADA Yukihiro
秋田医学 50 ( 2 ) 2023
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Review of 96 cases of hysteroscopic surgery in our hospital and future issues
白澤弘光, 熊澤由紀代, 佐藤亘, 富樫嘉津恵, 尾野夏紀, 藤島綾香, 設楽明宏, 岩澤卓也, 寺田幸弘
秋田県産科婦人科学会誌 26 2021
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Togashi Kazue, Kumazawa Yukiyo, Shirasawa Hiromitsu, Kukimoto Shioka, Ono Natsuki, Sato Wataru, Shimizu Dai, Terada Yukihiro
JAPANESE JOURNAL OF GYNECOLOGIC AND OBSTETRIC ENDOSCOPY ( JAPAN SOCIETY OF GYNECOLOGIC AND OBSTETRIC ENDOSCOPY AND MINIMALLY INVASIVE THERAPY ) 36 ( 2 ) 341 - 347 2020
<p><b>Introduction:</b> Ovarian auto-amputation is extremely rare and is most commonly attributed to chronic adnexal torsion and subsequent devascularization that precipitate infarction and necrosis. We describe a woman (Jehovah's witness) who presented with an inflamed abdominal cyst, which was diagnosed as an auto-amputated endometrial ovarian cyst, following laparoscopic surgery.</p><p><b>Case presentation:</b> A 45-year-old Jehovah's witness was referred to our hospital with acute abdominal pain. She had complained of dysmenorrhea prior to referral. Laboratory data revealed evidence of severe inflammation (white blood cell count 12400 cells/μL, C-reactive protein 17.4 mg/dL).</p><p> MRI revealed a cystic pelvic tumor with features of a benign ovarian cyst. She received intravenous antibiotics with resolution of inflammation following this conservative therapy after which we performed laparoscopic surgery for removal of the pelvic mass. Intraoperatively, we performed careful adhesiolysis followed by meticulous exploration of the pelvic cavity. We performed cystectomy and left adnexectomy with insertion of multiple drains into the peritoneal cavity.</p><p><b>Discussion:</b> Based on the laparoscopic and histopathological findings, the patient was diagnosed with chemical panperitonitis associated with a wandering ovarian endometrial cyst.</p><p><b>Conclusion:</b> We report successful but significantly challenging laparoscopic intervention for a wandering ovarian endometrial cyst in a woman with chemical peritonitis.</p><p></p>
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The timing of the release of the first polar body predicts the cleavage rate after parthenogenetic activation for human oocytes obtained by in vitro maturation
Hiromitsu Shirasawa, Yukiyo KUMAZAWA, Wataru SATO, Kazumasa TAKAHASHI, Yukihiro TERADA
Fertility and Sterility 112 ( 3 ) e142 - e142 2019.09
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Eri Maeda, Katsuyuki Murata, Yukiyo Kumazawa, Wataru Sato, Hiromitsu Shirasawa, Takuya Iwasawa, Kimiko Izumo, Nozomi Tatsuta, Mineshi Sakamoto, Yukihiro Terada
Environmental Research 168 357 - 363 2019.01
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下平式高周波切除器を用いた子宮腺筋症核出術後に生児を獲得した1例
岩澤 卓也, 岡部 基成, 高須賀 緑, 高橋 玄徳, 亀山 沙恵子, 今野 めぐみ, 白澤 弘光, 三浦 広志, 佐藤 亘, 熊澤 由紀代, 佐藤 朗, 寺田 幸弘
日本生殖医学会雑誌 ( (一社)日本生殖医学会 ) 63 ( 1-2 ) 108 - 108 2018.04
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下平式高周波切除器を用いた子宮腺筋症核出術後に生児を獲得した1例
岩澤 卓也, 岡部 基成, 高須賀 緑, 高橋 玄徳, 亀山 沙恵子, 今野 めぐみ, 白澤 弘光, 三浦 広志, 佐藤 亘, 熊澤 由紀代, 佐藤 朗, 寺田 幸弘
日本生殖医学会雑誌 ( (一社)日本生殖医学会 ) 63 ( 1-2 ) 108 - 108 2018.04
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Hiromitsu SHIRASAWA, Natsuki ONO, Yukiyo KUMAZAWA, Wataru SATO, Naoki SATO, Motomasa IHARA, Nobuo YAEGASHI, Yukihiro TERADA
Reproductive Medicine and Biology 2018