研究者詳細 - 岩田　健宏

論文 - 岩田　健宏

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【地方の腎移植の継続と継承-組織・指導医の取り組みと今後の展望-】岡山大学における腎移植継承の取り組み

荒木元朗, 西村慎吾, 吉永香澄, 丸山雄樹, 山野井友昭, 定平卓也, 富永悠介, 岩田健宏, 片山聡, 佐古智子, 枝村康平, 小林泰之, 那須保友

腎移植・血管外科 33 ( 2 ) 67 - 71 2021年

【地方の腎移植の継続と継承-組織・指導医の取り組みと今後の展望-】岡山大学における腎移植継承の取り組み

荒木元朗, 西村慎吾, 吉永香澄, 丸山雄樹, 山野井友昭, 定平卓也, 富永悠介, 岩田健宏, 片山聡, 佐古智子, 枝村康平, 小林泰之, 那須保友

腎移植・血管外科 33 ( 2 ) 67 - 71 2021年

記述言語：日本語出版者・発行元：腎移植・血管外科研究会

1.岡山大学の腎移植の背景・歴史岡山大学泌尿器科は2009年に新しい腎移植プログラムを立ち上げ総計144例となった.成績も1年生存・生着率100%を維持している.2.人材確保医局員の確保から始まる.3.育成腎移植は幅広いテクニックが要求される.血管縫合糸は若手医師でも縫いやすく結紮もし易いGore-tex sutureを用いている.いい雰囲気でやることを心がけている.4.腎臓内科との連携術前術後連携を取るため腎移植カンファレンスを月一回行い情報共有している.5.教室内での他の領域の医師との関係腎移植チームのメンバーも腫瘍の手術やロボット手術を担当することによって腎移植のみに偏らない配慮をしている.6.働き方改革移植前後の管理の簡略化に努めている.(著者抄録)

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RARCにおけるECUDとICUD (回腸導管) の比較検討

小林泰之, 枝村康平, 岩田健宏, 西村慎吾, 和田耕一郎, 荒木元朗, 渡辺豊彦, 那須保友

Japanese Journal of Endourology 34 ( 2 ) 182 - 185 2021年

記述言語：日本語出版者・発行元：日本泌尿器内視鏡学会

岡山大学病院にて2018年1月より2020年9月までの期間に単一術者にて連続的に行われたロボット支援膀胱全摘 (以下 : RARC) 46症例体腔外尿路変更 (以下 : ECUD) (23例), 体腔内尿路変更 (以下 : ICUD) (23例) の比較検討を行った. 検討項目は手術時間, 推定出血量, 輸血率, リンパ節郭清個数, 入院日数, 血液生化学データ, 術後合併症とした. 尿路変更に要した時間はICUD群の方が有意に長かったが, 入院期間はICUD群が有意に短かった. 他の周術期成績はECUDと同等であった. 術者の視点では良好な拡大視野, 尿管導管吻合の精緻性, 同一視野で手術の流れが途切れることなく継続できることがICUDのメリットではないかと考える.

DOI： 10.11302/jsejje.34.182

CiNii Article

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【ロボット手術の教育方法-それぞれの施設での試み-】岡山大学病院泌尿器科におけるロボット手術教育の現状

小林泰之, 岩田健宏, 西村慎吾, 高本篤, 佐古智子, 定平卓也, 枝村康平, 荒木元朗, 渡辺豊彦, 那須保友

Japanese Journal of Endourology 33 ( 2 ) 221 - 224 2020年12月

記述言語：日本語出版者・発行元：(一社)日本泌尿器内視鏡・ロボティクス学会

2009年にダビンチSが薬事承認、2012年にロボット支援下腹腔鏡下前立腺全摘除術が保険収載されて以来、ロボット手術は急激に普及している。岡山大学病院関連施設においても、この数年間でダビンチが急速に普及し、13台(岡山大学病院を含む)のダビンチが稼働し45名の術者が執刀を行っている。しかしながら、各々施設での手術方法、指導方法は全く同じではない。関連施設内での人事異動にともない、岡山大学病院においても、様々な背景を有する術者が在籍するようになり、同一施設内にも関わらず複数の手術方法が乱立した。この状態に当施設のロボット手術教育はうまく対応できず、2015年頃より周術期成績も悪化の傾向を示した。この問題を解決するために、腹腔鏡手術教育にて培った"手術内容を統一し手術内容の再現性を高め、短いラーニングカーブを目指す"というコンセプトを応用し、この状況を乗り越えようと試みている。(著者抄録)

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岡山大学病院におけるBioJetシステムを用いたMRI/US融合下経会陰的前立腺生検の初期

高本篤, 河田達志, 小林泰之, 岩田健宏, 西村慎吾, 佐古智子, 枝村康平, 荒木元朗, 渡邉豊彦, 那須保友

日本泌尿器内視鏡学会総会 34回 O - 1 2020年11月

RALP術中にモノポーラーシザースのチップカバーが脱落し、発見が困難であった一例

長尾賢太郎, 宗田大二郎, 岩田健宏, 佐古智子, 枝村康平, 小林泰之, 荒木元朗, 渡邉豊彦, 那須保友

日本泌尿器内視鏡学会総会 34回 O - 2 2020年11月

これから始めるロボット支援下仙骨腟固定術ロボット支援腹腔鏡下仙骨腟固定術の導入に向けて

佐古智子, 岩田健宏, 西村慎吾, 高本篤, 枝村康平, 小林泰之, 荒木元朗, 石井亜矢乃, 渡邉豊彦, 那須保友

日本泌尿器内視鏡学会総会 34回 SY - 1 2020年11月

腹腔鏡技術認定医実際の教育現場を紹介します! 岡山大学泌尿器科における腹腔鏡教育

小林泰之, 富永悠介, 枝村康平, 岩田健宏, 西村慎吾, 高本篤, 佐古智子, 荒木元朗, 渡辺豊彦, 那須保友

日本泌尿器内視鏡学会総会 34回 SY - 1 2020年11月

初心者向けの新術式一筆書きHoLEPの提案と教育効果について

富永悠介, 宗田大二郎, 坪井一馬, 岩田健宏, 佐古智子, 枝村康平, 小林泰之, 荒木元朗, 渡邉豊彦, 那須保友

日本泌尿器内視鏡学会総会 34回 O - 4 2020年11月

Expression of urokinase-type plasminogen activator system in non-metastatic prostate cancer. 国際誌

Shoji Kimura, David D'Andrea, Takehiro Iwata, Beat Foerster, Florian Janisch, Mehdi Kardoust Parizi, Marco Moschini, Alberto Briganti, Marko Babjuk, Piotr Chlosta, Pierre I Karakiewicz, Dmitry Enikeev, Leonid M Rapoport, Veronica Seebacher, Shin Egawa, Mohammad Abufaraj, Shahrokh F Shariat

World journal of urology 38 ( 10 ) 2501 - 2511 2020年10月

記述言語：英語掲載種別：研究論文（学術雑誌）

PURPOSE: To investigate the prognostic role of expression of urokinase-type plasminogen activator system members, such as urokinase-type activator (uPA), uPA-receptor (uPAR), and plasminogen activator inhibitor-1 (PAI-1), in patients treated with radical prostatectomy (RP) for prostate cancer (PCa). METHODS: Immunohistochemical staining for uPA system was performed on a tissue microarray of specimens from 3121 patients who underwent RP. Cox regression analyses were performed to investigate the association of overexpression of these markers alone or in combination with biochemical recurrence (BCR). Decision curve analysis was used to assess the clinical impact of these markers. RESULTS: uPA, uPAR, and PAI-1 were overexpressed in 1012 (32.4%), 1271 (40.7%), and 1311 (42%) patients, respectively. uPA overexpression was associated with all clinicopathologic characteristics of biologically aggressive PCa. On multivariable analysis, uPA, uPAR, and PAI-1 overexpression were all three associated with BCR (HR: 1.75, p < 0.01, HR: 1.22, p = 0.01 and HR: 1.20, p = 0.03, respectively). Moreover, the probability of BCR increased incrementally with increasing cumulative number of overexpressed markers. Decision curve analysis showed that addition of uPA, uPAR, and PAI-1 resulted in a net benefit compared to a base model comparing standard clinicopathologic features across the entire threshold probability range. In subgroup analyses, overexpression of all three markers remained associated with BCR in patients with favorable pathologic characteristics. CONCLUSION: Overexpression of uPA, uPAR, and PAI-1 in PCa tissue were each associated with worse BCR. Additionally, overexpression of all three markers is informative even in patients with favorable pathologic characteristics potentially helping clinical decision-making regarding adjuvant therapy and/or intensified follow-up.

DOI： 10.1007/s00345-019-03038-5

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ハイリスク腎移植game changers DSA陽性ハイリスク腎移植

西村慎吾, 荒木元朗, 関戸崇了, 吉永香澄, 和田里章悟, 丸山雄樹, 光井洋介, 窪田理沙, 定平卓也, 岩田健宏, 高本篤, 佐古智子, 枝村康平, 和田耕一郎, 小林泰之, 渡邉豊彦, 那須保友

西日本泌尿器科 82 ( 増刊 ) 90 - 90 2020年10月

尿路変向術:私の工夫 RARC ICUD失敗から学んだこと

小林泰之, 枝村康平, 西村慎吾, 岩田健宏, 定平卓也, 高本篤, 佐古智子, 荒木元朗, 渡邊豊彦, 那須保友

西日本泌尿器科 82 ( 増刊 ) 111 - 111 2020年10月

腎摘除術を要した多房性気腫性腎盂腎炎の1例

小林宏州, 高本篤, 定平卓也, 和田耕一郎, 前原貴典, 大岩裕子, 岩田健宏, 西村慎吾, 杉本盛人, 小林泰之, 荒木元朗, 渡部昌実, 渡邉豊彦, 那須保友

西日本泌尿器科 82 ( 4 ) 465 - 469 2020年10月

記述言語：日本語出版者・発行元：(一社)西日本泌尿器科学会

症例は55歳、女性。右腰背部痛を主訴に近医受診した。CTでClass 3Bの気腫性腎盂腎炎を認め、当院緊急搬送となった。未治療の2型糖尿病を有しており、HbA1cは13.4%であった。抗菌薬投与、血糖コントロール、ガンマグロブリン療法による保存的加療を開始したが、改善を認めなかった。CTガイド下経皮的ドレナージによる腎温存治療を最大限に検討したものの、広範で多房性にガス像を呈していたため穿刺部位を特定できず断念した。そのため入院4日後に経腰式右腎摘除術を施行した。術後の経過は良好で、入院30日後に退院となった。気腫性腎盂腎炎は腎実質やその周囲組織にガスの集簇を認める重篤な急性壊死性感染症である。適切に加療しなければ致死的となり得る疾患であるが、近年では保存的加療や経皮的ドレナージを中心とする腎温存を図る治療が多数ある。腎温存は施行できなかったが、腎摘除術を行うことで良好な経過を得られた症例を経験したので報告する。(著者抄録)

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後腹膜SFT(Solitary fibrous tumor)の一例

坪井一馬, 高本篤, 関戸崇了, 富永悠介, 岩田健宏, 佐古智子, 枝村康平, 小林泰之, 石井亜矢乃, 荒木元朗, 渡部昌美, 渡邉豊彦, 那須保友

西日本泌尿器科 82 ( 増刊 ) 191 - 191 2020年10月

Tumor suppressor REIC/Dkk-3 and its interacting protein SGTA inhibit glucocorticoid receptor to nuclear transport. 国際誌

Takehiro Iwata, Takuya Sadahira, Kazuhiko Ochiai, Hideo Ueki, Takanori Sasaki, Peng Haung, Motoo Araki, Toyohiko Watanabe, Yasutomo Nasu, Masami Watanabe

Experimental and therapeutic medicine 20 ( 2 ) 1739 - 1745 2020年8月

記述言語：英語掲載種別：研究論文（学術雑誌）

REIC/Dkk-3 is a tumor suppressor, and its expression is significantly downregulated in a variety of human cancer types. A previous study performed yeast two-hybrid screening and identified the small glutamine-rich tetratricopeptide repeat-containing protein α (SGTA), known as a negative modulator of cytoplasmic androgen receptor (AR) signaling, which is a novel interacting partner of REIC/Dkk-3. The previous study also indicated that the REIC/Dkk-3 protein interferes with the dimerization of SGTA and then upregulates the AR transport and signaling in human prostate cancer PC3 cells. Since the transport of some steroid receptors to nucleus is conducted similarly by dynein motor-dependent way, the current study aimed to investigate the role of SGTA and REIC/Dkk-3 in the transport of other glucocorticoid receptors (GR). In vitro reporter assays for the cytoplasmic GR transport were performed in human prostate cancer PC3 cells and 293T cells. As for the SGTA protein, a suppressive effect on the GR transport to the nucleus was observed in the cells. As for the REIC/Dkk-3 protein, an inhibitory effect was observed for the GR transport in PC3 cells. Under the depleted condition of SGTA by short-hairpin (sh)RNA, the downregulation of GR transport by REIC/Dkk-3 was significantly enhanced compared with the non-depleted condition in PC3 cells, suggesting a compensatory role of REIC/Dkk-3 in the SGTA mediated inhibition of GR transport. The current study therefore demonstrated that SGTA inhibited the cytoplasmic transport of GR in 293T and PC3 cells, and REIC/Dkk-3 also inhibited the cytoplasmic transport of GR in PC3 cells. These results may be used to gain novel insight into the GR transport and signaling in normal and cancer cells.

DOI： 10.3892/etm.2020.8819

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Efficacy of Preoperative Chemotherapy for High Risk Upper Tract Urothelial Carcinoma. 国際誌

Beat Foerster, Mohammad Abufaraj, Firas Petros, Mounsif Azizi, Mohit Gupta, Donald Schweitzer, Vitaly Margulis, Takehiro Iwata, Shoji Kimura, Ahmad Shabsigh, Alberto Briganti, Ja H Ku, Tim Muilwijk, Wassim Kassouf, Surena F Matin, Philippe E Spiess, Phillip M Pierorazio, Kees Hendricksen, Shahrokh F Shariat

The Journal of urology 203 ( 6 ) 1101 - 1108 2020年6月

記述言語：英語掲載種別：研究論文（学術雑誌）

PURPOSE: The impact of preoperative chemotherapy in patients with upper urinary tract urothelial carcinoma remains poorly investigated. We assessed the rates of pathological complete response (pT0N0/X) and downstaging (pT1N0/X or less) at radical nephroureterectomy after preoperative chemotherapy and evaluated their impact on survival. MATERIALS AND METHODS: This was an international observational study of patients who underwent preoperative chemotherapy and radical nephroureterectomy for high risk upper tract urothelial carcinoma between 2005 and 2017. Multiple imputation of chained equations was applied to account for missing values. Logistic regression analyses were performed to identify predictors of pathological response. Cox proportional hazard regression models were used to estimate recurrence-free survival, cancer specific survival and overall survival. RESULTS: A total of 267 patients met our inclusion criteria. Among included patients 82 (31%) received methotrexate, vinblastine, doxorubicin and cisplatin; 123 (46%) gemcitabine and cisplatin; 25 (9%) gemcitabine and carboplatin; and 32 (12%) other regimens. The overall rates of pathological complete response and pathological downstaging were 10.1% and 44.9%, respectively. On multivariable analysis the use of gemcitabine and cisplatin, and gemcitabine and carboplatin was not statistically different from methotrexate, vinblastine, doxorubicin and cisplatin in achieving pathological complete response and pathological downstaging, respectively. The number of administered cycles did not appear to have an effect on pathological responses. Pathological downstaging was the strongest prognostic factor for recurrence-free survival (HR 0.2, p <0.001), cancer specific survival (HR 0.19, p <0.001) and overall survival (HR 0.40, p <0.001). CONCLUSIONS: Pathological downstaging after preoperative chemotherapy is a robust prognostic factor at radical nephroureterectomy and is associated with improved survival outcomes. Although preoperative chemotherapy appears to be effective, well designed prospective studies are still needed.

DOI： 10.1097/JU.0000000000000737

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Inflammatory bowel disease and prostate cancer risk: A systematic review. 国際誌

Anoud Haddad, Mohammed Qussay Al-Sabbagh, Hashim Al-Ani, Abdel Muez Siyam, Emad Aborajooh, Takehiro Iwata, Shoji Kimura, Shahrokh F Shariat, Mohammad Abufaraj

Arab journal of urology 18 ( 4 ) 207 - 212 2020年5月

記述言語：英語掲載種別：研究論文（学術雑誌）

Objective: To evaluate the risk of prostate cancer (PCa) in patients with inflammatory bowel disease (IBD), focussing on ulcerative colitis (UC) and Crohn's disease (CD) separately. Methods: A systemic search was carried out using PubMed and Web of Science databases following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. We retrieved a total of 349 articles. All the articles were in the English language and investigated the incidence of PCa in patients with IBD. Results: Nine studies met our inclusion criteria, with a total of 205 037 men. Two studies reported an increase in the risk of PCa in men with IBD in general. Five other studies reported an increased risk of PCa in men with UC or with CD specifically. On the other hand, two studies reported a decreased risk of PCa in patients with UC and patients with IBD treated with aminosalicylates. Conclusions: While men with UC appear to have higher risk of developing PCa, data on patients with CD are inconclusive. Therefore, patients with UC may benefit from earlier PCa screening. Our findings confirm a complex interplay between IBD and PCa, including factors such as genetic predisposition, systemic inflammation and treatment effects. The modulatory effect of treatment strategies for IBD on the development and progression of PCa might be of clinical significance. Abbreviations: CD: Crohn's disease; CRP: C- reactive protein; FOLH1: folate hydrolase 1; GIT: gastrointestinal tract; IBD: inflammatory bowel disease; IL-6: interleukin 6; NOS: Newcastle-Ottawa Scale; PCa: prostate cancer; PRISMA: Preferred Reporting Items for Systematic Reviews and Meta-Analyses; PSMA: prostate-specific membrane antigen; UC: ulcerative colitis.

DOI： 10.1080/2090598X.2020.1761674

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Diagnostic performance of multidetector computed tomographic (MDCTU) in upper tract urothelial carcinoma (UTUC): a systematic review and meta-analysis. 国際誌

Florian Janisch, Shahrokh F Shariat, Pascal Baltzer, Harun Fajkovic, Shoji Kimura, Takehiro Iwata, Philipp Korn, Lin Yang, Petr V Glybochko, Michael Rink, Mohammad Abufaraj

World journal of urology 38 ( 5 ) 1165 - 1175 2020年5月

記述言語：英語掲載種別：研究論文（学術雑誌）

PURPOSE: To systematically review the literature evaluating the performance of MDCTU for the diagnosis of UTUC and meta-analyse available data. We also compared the diagnostic accuracy of MDCTU to other radiologic modalities. METHODS: This systematic review and meta-analysis was conducted according to the PRISMA statement. A systematic research using Pubmed, Scopus, Cochrane, and Web of Science libraries was performed on November 1st, 2018. We included all original articles investigating the performance of MDCTU for the diagnosis of UTUC using histopathology as the reference standard for true positives and an unsuspicious clinical follow-up of at least 1 year for true negatives. RESULTS: Overall, 13 studies comprising 1233 patients were eligible and included in this systematic review and meta-analysis. In patient-based analyses, the pooled sensitivity and specificity were 92% (CI 0.85-0.96) and 95% (CI 0.88-0.98), respectively. The reported sensitivity in the per-lesion analysis ranged between 91 and 97%. All studies reporting segment-based analysis demonstrated high diagnostic accuracy (> 90%). While one study reported higher accuracy of retrograde ureteropyelography than MDCTU (97% vs. 94%), another study demonstrated an inferior accuracy of intravenous pyelogram compared to MDCTU. Findings on the accuracy of diffusion-weighted magnetic resonance imaging compared to MDCTU were inconsistent. CONCLUSION: MDCTU has excellent diagnostic performance in detecting UTUC and ruling-out suspicious upper urinary tract lesions in per-patient and per-lesion-based analyses. We confirm the choice of MDCTU as the radiologic diagnostic modality of choice for work-up of suspicious upper urinary tract lesions providing valuable information in patient counseling, decision-making, and treatment planning.

DOI： 10.1007/s00345-019-02875-8

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The prognostic value of the urokinase-plasminogen activator system (uPA) in bladder cancer patients treated with radical cystectomy (RC). 国際誌

Florian Janisch, David D'Andrea, Takehiro Iwata, Shoji Kimura, Mohammad Abufaraj, Dmitry Enikeev, Petr V Glybochko, Pierre I Karakiewicz, Peter Nyirady, Harun Fajkovic, Andrea Haitel, Veronika Seebacher, Michael Rink, Shahrokh F Shariat

Urologic oncology 38 ( 5 ) 423 - 432 2020年5月

記述言語：英語掲載種別：研究論文（学術雑誌）

PURPOSE: Urokinase-plasminogen activator (uPA), its receptor (uPAR), and the plasmin-activator inhibitor type 1 (PAI-1) have been associated with oncologic outcomes in various malignancies and could help identify bladder cancer (BC) patients treated with radical cystectomy (RC) who are likely to benefit from intensification of therapy to prevent disease progression. Our aim was to assess the value of uPA, uPAR, and PAI-1 for prognosticating survival outcomes of patients treated with RC for BC. MATERIALS AND METHODS: Tumor specimens from 272 consecutive patients treated with RC for advanced BC were assessed with immunohistochemical staining for uPA, uPAR, and PAI-1. Overexpression was assessed by pathological image analysis. Kaplan-Meier estimates and multivariable Cox-regression were used to analyze survival. Harrell's C-index was used to assess for clinical impact of the uPA system. RESULTS: uPA, uPAR, and PAI-1 were overexpressed in 48.2%, 51.1%, and 52.2% of patients, respectively. uPA overexpression was associated with lymphovascular invasion (P = 0.034) and nodal status (P = 0.013); PAI-1 overexpression was associated with primary muscle-invasive BC (P = 0.015) and lymphovascular invasion (P = 0.024). uPA, uPAR, and the number of overexpressed markers were all 3 significantly associated with shorter overall recurrence-free-, distant recurrence-free-, and cancer-specific survival. In multivariable analyses, uPA overexpression remained associated with shorter recurrence-free survival (hazard ratio [HR] = 1.79; P = 0.036) in the entire cohort, in patients without lymph node metastasis (HR = 1.98; P = 0.018) and those with nonorgan-confined disease (HR = 1.98; P = 0.022). uPAR overexpression was associated with shorter recurrence-free survival in patients without lymph node metastasis (HR = 2.01; P = 0.021) and those with organ-confined disease (HR = 4.11; P = 0.037). CONCLUSION: Members of the uPA system are associated with features of biologically aggressive BC and oncologic outcomes. However, their value beyond currently available information remains limited.

DOI： 10.1016/j.urolonc.2020.02.002

PubMed

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【腎盂・尿管癌の治療を考える】腎盂・尿管癌における腹腔鏡下腎尿管全摘除術の適応

吉永香澄, 荒木元朗, 和田里章悟, 丸山雄樹, 光井洋介, 窪田理沙, 定平卓也, 岩田健宏, 西村慎吾, 高本篤, 和田耕一郎, 佐古智子, 枝村康平, 小林泰之, 渡部昌実, 渡辺豊彦, 那須保友

泌尿器外科 33 ( 5 ) 455 - 461 2020年5月

記述言語：日本語出版者・発行元：医学図書出版(株)

切除可能な腎盂・尿管癌において、外科的治療の標準術式は腎尿管全摘除術・膀胱部分切除術である。腹腔鏡手術は開放手術と比較して低侵襲であり、低リスク症例では前者が選択される傾向にあるが、pT3以上やリンパ節転移が疑われる症例では開放手術が推奨されている。また、腎機能に問題がある場合などに腎温存療法や化学療法が選択されることもある。本稿では腎盂・尿管癌における腹腔鏡手術の適応について考察する。(著者抄録)

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