研究者総覧

近澤 研郎 (チカザワ ケンロウ)

  • 総合医学第2講座 助教
Last Updated :2020/07/29

研究者情報

学位

    近澤 研郎

J-Global ID

研究活動情報

論文

  • Oide S, Kuwata T, Wang L, Imai K, Chikazawa K, Horiuchi I, Takagi K, Konno R
    Journal of medical ultrasonics (2001) 2019年04月 [査読有り][通常論文]
  • Midorikawa A, Wang L, Kuwata T, Taniguchi Y, Horiuchi I, Matsushita C, Chikazawa K, Takagi K
    Clinical case reports 7 4 766 - 769 2019年04月 [査読有り][通常論文]
  • Oide S, Chikazawa K, Imai K, Yoshida C, Kuwata T, Konno R
    Journal of obstetrics and gynaecology : the journal of the Institute of Obstetrics and Gynaecology 39 2 286 - 287 2019年02月 [査読有り][通常論文]
  • Chikazawa K, Netsu S, Kuwata T, Konno R
    Taiwanese journal of obstetrics & gynecology 57 6 819 - 824 2018年12月 [査読有り][通常論文]
  • Wang L, Kuwata T, Horiuchi I, Ariga H, Imai K, Ko H, Kimura A, Chikazawa K, Oide S, Takagi K
    Clinical case reports 6 12 2507 - 2508 2018年12月 [査読有り][通常論文]
  • Chikazawa K, Imai K, Liangcheng W, Sasaki S, Horiuchi I, Kuwata T, Takagi K
    Journal of medical case reports 12 1 344  2018年11月 [査読有り][通常論文]
  • Wang L, Sasaki S, Kimura A, Kuwata T, Ariga H, Chikazawa K, Horiuchi I, Takagi K
    Taiwanese journal of obstetrics & gynecology 57 5 775  2018年10月 [査読有り][通常論文]
  • Ushijima J, Wang L, Ko H, Horiuchi I, Chikazawa K, Sasaki S, Kuwata T, Takagi K, Tanaka A
    Clinical case reports 6 9 1747 - 1750 2018年09月 [査読有り][通常論文]
  • Li D, Wang L, Horiuchi I, Kimura SI, Chikazawa K, Kimura A, Sasaki S, Kuwata T, Takagi K
    Clinical case reports 6 9 1807 - 1809 2018年09月 [査読有り][通常論文]
  • Chikazawa K, Yoshida C, Kuwata T, Konno R
    Taiwanese journal of obstetrics & gynecology 57 3 468 - 469 2018年06月 [査読有り][通常論文]
  • Efficacy of a Self-timed Trial of Laparoscopic Surgical Training Using a Dry Box.
    Chikazawa K, Kanao H, Hada T, Netsu S, Kuwata T, Konno R
    Eplasty 18 e8  2018年 [査読有り][通常論文]
  • Kenro Chikazawa, Sachiho Netsu, Keiko Akashi, Yurina Suzuki, Ryo Konno, Shigeru Motomatsu
    JOURNAL OF OBSTETRICS AND GYNAECOLOGY 37 1 78 - 81 2017年01月 [査読有り][通常論文]
     
    This study aimed to determine whether the cervical length increases over a period of six months, after the loop electrosurgical excision procedure (LEEP) for grade III cervical intraepithelial neoplasia (CIN), and to identify the factors associated with an increase in the cervical length. We retrospectively reviewed the medical records of 183 patients who underwent the LEEP between April 2011 and March 2014, at the Department of Gynaecology, Kyosai Hospital. Transvaginal ultrasonography was performed at two, three and six months after the LEEP, and the mean increase in the cervical length between two and three months, two and six months, and three and six months were 2.07, 5.23 and 2.92mm, respectively. The increase in the cervical length was not associated with age, gravidity, parity and the width of CIN. In conclusion, the cervical length may increase gradually over a period of six months after the LEEP.
  • Kenro Chikazawa, Junko Ushijima, Kenjiro Takagi, Eishin Nakamura, Koki Samejima, Kanako Kadowaki, Isao Horiuchi
    TAIWANESE JOURNAL OF OBSTETRICS & GYNECOLOGY 55 6 861 - 862 2016年12月 [査読有り][通常論文]
     
    Objective: Instrument-assisted vaginal delivery is a significant risk factor for birth canal lacerations. Although many obstetricians recently are recommending restrictive rather than a routine episiotomy, reports have shown restrictive episiotomy to be associated with more extensive anterior birth canal trauma compared with routine episiotomy. Materials and Methods: We retrospectively reviewed 110 cases of forceps and vacuum deliveries and investigated the site of birth canal lacerations. Birth canal lacerations were divided into four sites according to direction-anterior, ipsilateral, contralateral, and posterior. Results: The frequency of lacerations were, from most to least, posterior (34%), lateral (21.7%), and anterior (1.9%). Moreover, among the lateral lacerations, they were more frequent in the contralateral side of episiotomy than the ipsilateral side (18.9% vs. 4.7%, p < 0.01). Conclusion: Our results indicate that caution is also needed concerning not only the anterior site, but also the contralateral site of an episiotomy to prevent laceration in an instrument-assisted vaginal delivery. Copyright (C) 2016, Taiwan Association of Obstetrics & Gynecology. Published by Elsevier Taiwan LLC.
  • Kenro Chikazawa, Keiko Akashi, Yosuke Gomi, Kahori Tachibana, Isao Horiuchi, Yoh Dobashi, Tomohisa Okochi, Kohei Hamamoto, Keisuke Tanno, Kenjiro Takagi
    TAIWANESE JOURNAL OF OBSTETRICS & GYNECOLOGY 55 6 913 - 914 2016年12月 [査読有り][通常論文]
  • Kenro Chikazawa, Sachiho Netsu, Shigeru Motomatsu, Ryo Konno
    JOURNAL OF OBSTETRICS AND GYNAECOLOGY RESEARCH 42 4 457 - 463 2016年04月 [査読有り][通常論文]
     
    AimThe aim of this study was to identify predictors of recurrent/residual disease for management after loop electrosurgical excisional procedure. MethodsWe retrospectively reviewed 178 patients with cervical intraepithelial neoplasia grade 3 and microinvasive squamous cell carcinoma who underwent the loop electrosurgical excisional procedure between April 2011 and March 2014. Endocervical/ectocervical margin status, endocervical curettage (ECC) status, and maximum width of cervical intraepithelial neoplasia were assessed. Patients were followed up for 6-12 months. ResultsPatients with endocervical margin involvement were significantly older and those with ectocervical margin involvement were significantly younger than patients with no margin involvement (P = 0.02 for both comparisons). ECC-positive patients were significantly older than ECC-negative patients (P = 0.049). There was a significant difference in the mean width of the cervical intraepithelial neoplasia between women with ectocervical involvement and those without ecto- or endocervical involvement (10.2 3.1 mm vs 7.3 +/- 3.5 mm, P = 0.0002). The odds ratios for possible recurrent/residual disease for endocervical involvement, ectocervical involvement, and ECC-positivity were 2.1 (0.5-8.4), 3.2 (1.3-7.9), and 6.8 (1.4-32.1), respectively. However, while most ECC-positive patients underwent a second surgery, most patients with ectocervical involvement did not need further treatment. ConclusionOlder age and ECC were significantly associated with endocervical margin involvement; younger age and width of cervical intraepithelial neoplasia were associated with ectocervical margin involvement. Ectocervical margin involvement significantly increased the risk of possible recurrent/residual disease; however, these patients might recover naturally. ECC-positivity significantly increased the risk of recurrent/residual disease.
  • K. Chikazawa, S. Netsu, R. Konno
    EUROPEAN JOURNAL OF GYNAECOLOGICAL ONCOLOGY 37 4 511 - 516 2016年 [査読有り][通常論文]
     
    Purpose of investigation: To determine if concurrent chemoradiotherapy (CCRT) with paclitaxel and carboplatin is effective, convenient, and tolerable for cervical cancer treatment. Materials and Methods: The authors retrospectively reviewed the medical records of 49 patients. Primary outcomes included progression-free survival (PFS) and overall survival (OS). The Cox proportional hazards model was adjusted for all prognostic factors in the multivariable analysis. Results: Over the median follow-up time of 32 months in a sample consisting of 87.8% (43/49) squamous cell carcinoma and 12.2% (6/49) adenocarcinoma, two-year PFS and OS rates were 67.2% and 80.9%, respectively. hi univariate analyses, stage, histology, performance status, tumor size, and age were significant variables for OS; only histology was significant in the multivariable analysis. Acute toxicity grade 3 or 4 neutropenia (85.7%), diarrhea (32.7%), and late toxicity grade 3 or 4 (12.2%) were detected. Conclusions: For cervical cancer treatment, CCRT with paclitaxel/carboplatin is satisfactory.
  • Chikazawa K, Netsu S, Akashi K, Suzuki Y, Konno R, Motomatsu S
    International journal of surgery case reports 26 199 - 201 2016年 [査読有り][通常論文]
  • Kenro Chikazawa, Sachiho Netsu, Ryo Konno
    TAIWANESE JOURNAL OF OBSTETRICS & GYNECOLOGY 54 1 106 - 106 2015年02月 [査読有り][通常論文]
  • Chikazawa K, Mitsushita J, Netsu S, Konno R
    Asian journal of endoscopic surgery 7 4 320 - 322 2014年11月 [査読有り][通常論文]
  • Shigeki Matsubara, Akifumi Fujita, Shin-ichi Muramatsu, Rie Usui, Kenro Chikazawa, Mitsuaki Suzuki
    JOURNAL OF OBSTETRICS AND GYNAECOLOGY RESEARCH 37 8 1137 - 1140 2011年08月 [査読有り][通常論文]
     
    Posterior reversible encephalopathy syndrome, if it occurs in late pregnancy, requires pregnancy termination. Here, we report a woman without a discernable underlying condition who developed neurological deficits at 14 weeks of pregnancy. Magnetic resonance imaging demonstrated an occipitoparietal brain lesion suggestive of posterior reversible encephalopathy syndrome. Neurological symptoms ameliorated spontaneously and she continued her pregnancy to term. A decision to terminate pregnancy based on only neurological and magnetic resonance imaging findings should be avoided.


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