{"title":"Simultaneous Robot-Assisted Radical Nephrectomy and Sigmoid Colectomy Using the da Vinci 5 System","authors":"Kyotaro Fukuta, Nana Ishibashi, Yuya Taoka, Tomohiko Miyatani, Shoko Yamashita, Yuina Nagao, Yuichiro Atagi, Keisuke Ozaki, Takeshi Nakashima, Ryoichi Nakanishi, Hirofumi Izaki, Junya Furukawa","doi":"10.1111/ases.70293","DOIUrl":"10.1111/ases.70293","url":null,"abstract":"<div>\u0000 \u0000 <p>Synchronous renal cell carcinoma (RCC) and colorectal cancer are uncommon, and the optimal surgical strategy remains controversial. We report a patient with synchronous RCC and sigmoid colon cancer successfully treated with a one-stage, robot-assisted combined approach using the da Vinci 5 system. A 60-year-old woman presented with severe anemia. Imaging revealed a left-sided renal tumor, sigmoid colon cancer, and a solitary pulmonary metastasis. Both tumors were considered surgical indications, and early intervention was required due to the risk of bowel obstruction. Robot-assisted radical nephrectomy, followed by robot-assisted sigmoid colectomy, was performed in a single session. The total operative time was 4 h 19 min, with minimal blood loss and no intraoperative complications. Simultaneous robotic resection for synchronous RCC and sigmoid colon cancer is feasible and safe in selected patients when supported by careful preoperative planning and multidisciplinary collaboration.</p>\u0000 </div>","PeriodicalId":47019,"journal":{"name":"Asian Journal of Endoscopic Surgery","volume":"19 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2026-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147646943","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Early Clinical Experience With the Hinotori Robotic Surgical System: Comparable Perioperative Outcomes With the da Vinci Platform in Primary Lung Cancer","authors":"Yasuaki Kubouchi, Ryota Yasuda, Yuji Nozaka, Wakako Fujiwara, Shinji Matsui, Yugo Tanaka","doi":"10.1111/ases.70286","DOIUrl":"10.1111/ases.70286","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Introduction</h3>\u0000 \u0000 <p>The hinotori robotic surgical system, developed in Japan, was first employed for thoracic surgery in 2024 as a domestically produced alternative to the da Vinci platform. However, comparative evidence regarding the clinical performance of this system during the early implementation phase remains limited. Therefore, this study was conducted to investigate the safety, feasibility, and early clinical outcomes of the hinotori system compared with those of the da Vinci system in robot-assisted thoracic surgery (RATS) for primary lung cancer.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>We retrospectively reviewed 77 consecutive patients who underwent RATS at Tottori University Hospital between December 2024 and June 2025, including 21 patients who underwent surgery using the hinotori system (h-RATS group) and 56 patients who underwent surgery using the da Vinci system (d-RATS group).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>Baseline characteristics were comparable between both groups. Median operative and console times were similar between the groups (145.5 vs. 152.0 min, <i>p</i> = 0.710; 105 vs. 100 min, <i>p</i> = 0.954, respectively). Docking time was significantly longer in the h-RATS group (21 vs. 15 min, <i>p</i> < 0.001) but improved with experience, decreasing from 24 to 18.5 min (<i>p</i> = 0.034). Blood loss, chest tube duration, hospital stay, or postoperative complication rates were also comparable between the groups. No conversion to thoracotomy or postoperative mortality occurred in the h-RATS group.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusion</h3>\u0000 \u0000 <p>These findings suggested that even during its early implementation phase, the hinotori system can be safely and effectively applied in thoracic surgery, achieving perioperative outcomes equivalent to those obtained from the da Vinci system.</p>\u0000 </section>\u0000 </div>","PeriodicalId":47019,"journal":{"name":"Asian Journal of Endoscopic Surgery","volume":"19 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2026-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147646939","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Causes of Open Conversion in Colorectal Cancer Surgery and Impact on Prognosis","authors":"Tetsuro Tominaga, Shintaro Hashimoto, Yuma Takamura, Hiroki Katayama, Mariko Yamashita, Keisuke Noda, Shoko Tei, Rika Ono, Mitsutoshi Ishii, Makoto Hisanaga, Kaido Oishi, Masaaki Moriyama, Fumitake Uchida, Toshio Shiraishi, Masaki Kunizaki, Takashi Nonaka, Keitaro Matsumoto","doi":"10.1111/ases.70283","DOIUrl":"10.1111/ases.70283","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Purpose</h3>\u0000 \u0000 <p>To examine the risk factors for open conversion during minimally invasive colorectal surgery and to investigate the impact of open conversion on short- and long-term prognosis.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>Between 2016 and 2023, we retrospectively reviewed 4943 patients who underwent robotic or laparoscopic colorectal surgery. Patients were divided into those who underwent intraoperative open conversion (conversion group, <i>n</i> = 30) and those who underwent surgery without conversion (nonconversion group, <i>n</i> = 4913). Clinical characteristics were compared between the groups.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>Multivariate analysis revealed surgery performed by an expert surgeon (odds ratio [OR]: 0.361, 95% confidence interval [CI]: 0.158–0.822, <i>p</i> = 0.015) as a negative predictor and combined resection of adjacent structures (OR: 4.264, 95% CI: 1.715–10.604, <i>p</i> = 0.001), and clinical T4 disease (OR: 3.215, 95% CI: 1.415–7.465, <i>p</i> = 0.005) as positive predictors of open conversion. Open conversion was an independent predictor of postoperative complications (OR: 2.550, 95% CI: 1.201–5.414, <i>p</i> = 0.014) and relapse-free survival (hazard ratio [HR]: 3.343, 95% CI: 1.232–8.923, <i>p</i> = 0.030).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusion</h3>\u0000 \u0000 <p>Open conversions were less frequent when performed by experts and more common in advanced tumor stages. For patients at increased risk of conversion, the procedure should preferably be performed in centers with established techniques and experienced surgeons.</p>\u0000 </section>\u0000 </div>","PeriodicalId":47019,"journal":{"name":"Asian Journal of Endoscopic Surgery","volume":"19 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2026-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147646890","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A Novel Laparoscopic Injection Needle for Abdominal Wall Nerve Block in Reduced Port Surgery","authors":"Jun Nagata, Jun Watanabe, Asahi Nagata, Hiroto Sannomiya, Kensuke Nitta, Atsuhiro Koga, Yasuki Akiyama, Masumi Yamauchi, Yasuhisa Mori, Nagahiro Sato, Toshihisa Tamura, Kazunori Shibao, Keiji Hirata","doi":"10.1111/ases.70287","DOIUrl":"10.1111/ases.70287","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <p>Abdominal wall nerve blocks support multimodal analgesia, but percutaneous ultrasound-guided blocks can be technically difficult in reduced port surgery (RPS) and may carry a risk of inadvertent visceral injury when puncture angles are constrained. Our group previously demonstrated that a transperitoneal abdominal wall block can be performed with simultaneous extracorporeal ultrasound confirmation of injectate spread. Here, we report a purpose-designed laparoscopic injection needle to standardize this internal approach in RPS. The single-use device has an 800 mm flexible shaft, a 25-gauge needle, and an adjustable tip protrusion (2–7 mm), enabling insertion through 3 or 5 mm ports while maintaining pneumoperitoneum. The target layer is identified from the peritoneal side; correct plane entry is confirmed by visual “tenting” and controlled hydrodissection; and local anesthetic is delivered while observing real-time tissue distension. The technique was integrated into reduced-port transabdominal preperitoneal (TAPP) inguinal hernia repair without workflow interruption.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>This device provides a practical method to perform abdominal wall nerve block under direct visualization in RPS, with depth control tailored to abdominal wall thickness. Future comparative studies versus ultrasound-guided techniques are warranted.</p>\u0000 </section>\u0000 </div>","PeriodicalId":47019,"journal":{"name":"Asian Journal of Endoscopic Surgery","volume":"19 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2026-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13066774/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147646823","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Fusion Surgery-Driven Robotic Right Colectomy With Intracorporeal Functional End-to-End Anastomosis Using the Double-Bipolar Method: A Structured and Standardized Workflow","authors":"Yoshiaki Fujimoto, Takuya Honboh, Shuto Nakashima, Kosuke Hirose, Huanlin Wang, Noboru Harada, Noriaki Sadanaga, Tomoharu Yoshizumi","doi":"10.1111/ases.70282","DOIUrl":"10.1111/ases.70282","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Background</h3>\u0000 \u0000 <p>Intracorporeal anastomosis (IA) offers advantages in terms of wound morbidity and recovery during minimally invasive right colectomy; however, intracorporeal functional end-to-end anastomosis (FEEA) remains a technically demanding procedure. We developed a standardized fusion surgery workflow that integrates the double-bipolar method (DBM), powered stapling, and indocyanine green (ICG)-guided perfusion assessment to enhance the procedural stability and role clarity during intracorporeal reconstruction.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>This single-center retrospective study included 35 consecutive patients who underwent robotic right colectomy with intracorporeal FEEA using DBM. The primary outcomes were feasibility, descriptive safety, and workflow adherence. The secondary outcomes included operative metrics and postoperative recovery.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>All 35 procedures were completed robotically without conversion or workflow deviation. The median operative and console times were 221 and 146 min, respectively. No anastomotic leaks or reoperations occurred. Postoperative ileus, superficial surgical site infection, and major complications (Clavien-Dindo ≥ IIIa) each occurred in one patient (2.9%). The median hospital stay was 6 days.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>In this consecutive single-center series, the structured fusion surgery workflow for robotic right colectomy with intracorporeal FEEA was feasible and descriptively safe. These findings suggest that a standardized workflow integrating DBM-based exposure, powered stapling, and perfusion assessment may facilitate stable intracorporeal reconstruction in experienced robotic settings, warranting further prospective validation.</p>\u0000 </section>\u0000 </div>","PeriodicalId":47019,"journal":{"name":"Asian Journal of Endoscopic Surgery","volume":"19 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2026-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147624120","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}