1.Emergent treatment using balloon-assisted ERCP versus EUS-guided drainage for acute cholangitis in patients with surgically altered anatomy
Takahiro SHISHIMOTO ; Masahiro ITONAGA ; Reiko ASHIDA ; Yasunobu YAMASHITA ; Yuki KAWAJI ; Takashi TAMURA ; Hiromu MORISHITA ; Akiya NAKAHATA ; Yuto SUGIHARA ; Tomokazu ISHIHARA ; Masayuki KITANO
International Journal of Gastrointestinal Intervention 2025;14(1):2-8
Background:
No studies have compared balloon-assisted endoscope-guided endoscopic retrograde cholangiopancreatography (BAE-ERCP) and endoscopic ultrasonography-guided biliary drainage (EUS-BD) for emergent treatment of acute cholangitis (AC) in patients with upper gastrointestinal surgically altered anatomy (SAA).
Methods:
This study retrospectively evaluated consecutive patients who underwent emergent BAE-ERCP or EUS-BD for AC with SAA between January 2020 and March 2024. Technical success, clinical success, procedure time, and adverse events (AEs) were compared between the two groups.
Results:
This study included 23 patients in the BAE-ERCP group and 14 patients in the EUS-BD group. Technical success and clinical success rates did not significantly differ between the two groups (88% vs. 100%, P = 0.51 and 95% vs. 93%, P = 0.66). Similarly, the rate of AEs was comparable between the two groups (4% vs. 14%, P = 0.54). The median procedure time was significantly shorter in the EUS-BD group than in the BAE-ERCP group (32.5 [interquartile range; IQR, 28.8–52.5] minutes vs. 70.0 [IQR, 60.0–90.0] minutes, P < 0.01). In cases with grade 2 or 3 cholangitis, the rates of technical success, clinical success, and AEs did not significantly differ between the two groups. However, the median procedure time was significantly shorter in the EUS-BD group than in the BAE-ERCP group (32.5 [IQR, 28.8–52.5] minutes vs. 70 [IQR, 56.3–90.0] minutes, P < 0.01).
Conclusion
While both BAE-ERCP and EUS-BD can be performed safely and effectively in patients with AC and SAA, the procedure time is significantly shorter with EUS-BD than with BAE-ERCP.
2.Novel technique for endoscopic ultrasound-guided gallbladder drainage to skip the needle tract dilation step: Efficacy of a 6-mm antimigration metal stent with a thin, tapered delivery catheter
Keiichi HATAMARU ; Masayuki KITANO ; Masahiro ITONAGA ; Yasunobu YAMASHITA ; Takashi TAMURA ; Yuki KAWAJI ; Junya NUTA
International Journal of Gastrointestinal Intervention 2025;14(1):9-14
Background:
Endoscopic ultrasound-guided gallbladder drainage (EUS-GBD) has been recognized as an effective treatment for patients at high risk for surgery. An antimigration metal stent with tapered thin delivery system has recently been developed. The aims of this study were to evaluate the feasibility, safety, and longterm outcomes of EUS-GBD using the new metal stent.
Methods:
Between April 2017 and March 2020, 21 patients with acute cholecystitis unsuitable for cholecystectomy underwent EUS-GBD using the metal stent. The stent was 6 mm in diameter and 6 cm in length, with a large flare at both ends for antimigration, and mounted in a 7.5 Fr delivery catheter, which requires no dilation devices. We retrospectively evaluated clinical and technical success, adverse events, and stent patency.
Results:
The technical and clinical success rates of EUS-GBD using the metal stent were 95.2% and 100%, respectively. For 75% of the patients, metal stents could be placed without dilatation of the needle tract. These patients had significantly shorter procedure time (23.6 ± 9.8 min) than patients requiring needle tract dilatation (38.4 ± 17.1 min; P = 0.036). The median follow-up periods were 336 days (interquartile range [IQR] 152–919 days) and 1,135 days (IQR 1,009–1,675 days) for all and alive patients, respectively. No adverse events or recurrence of cholecystitis due to stent occlusion that occurred in any patient at follow-up was observed.
Conclusion
In conclusion, EUS-GBD using the newly designed metal stent showed excellent safety and longterm outcomes, and may be suitable as an alternative treatment in patients who are unsuitable for cholecystectomy.
3.Report on the ICMART 2024 in Korea
Journal of the Japan Society of Acupuncture and Moxibustion 2025;75(1):108-112
From September 27 to 29, 2024, I presented my research on electroacupuncture at the ICMART 2024 World Congress on Medical Acupuncture, held in Jeju City, South Korea. ICMART, an organization primarily involving countries from Europe and the Americas, hosted this congress in Asia for the first time. Under the theme "Future of Integrative Healthcare," the event highlighted the convergence of acupuncture and modern medical techniques. While much of the research presented focused on clinical efficacy, relatively few studies took a physiological approach, indicating the need for more diverse methodologies and the inclusion of objective assessments in acupuncture research. For Japan to achieve greater international recognition in this field, it is essential to look beyond immediate outcomes and develop frameworks that cultivate the next generation of researchers. Lowering the barriers for acupuncturists to participate in both clinical practice and scientific research will be a key factor in this process. Examples from other countries presented during the conference underscored the value of strong collaboration between practitioners and academics, providing valuable insights for Japan's integrative medicine landscape. Ultimately, the congress demonstrated that integrating various disciplines-from physiology to clinical application-can enhance the credibility of acupuncture research. By adopting such interdisciplinary approaches and learning from global initiatives, Japan's acupuncture community can expand its international presence and contribute to advancing the field of integrative healthcare.
4.Emergent treatment using balloon-assisted ERCP versus EUS-guided drainage for acute cholangitis in patients with surgically altered anatomy
Takahiro SHISHIMOTO ; Masahiro ITONAGA ; Reiko ASHIDA ; Yasunobu YAMASHITA ; Yuki KAWAJI ; Takashi TAMURA ; Hiromu MORISHITA ; Akiya NAKAHATA ; Yuto SUGIHARA ; Tomokazu ISHIHARA ; Masayuki KITANO
International Journal of Gastrointestinal Intervention 2025;14(1):2-8
Background:
No studies have compared balloon-assisted endoscope-guided endoscopic retrograde cholangiopancreatography (BAE-ERCP) and endoscopic ultrasonography-guided biliary drainage (EUS-BD) for emergent treatment of acute cholangitis (AC) in patients with upper gastrointestinal surgically altered anatomy (SAA).
Methods:
This study retrospectively evaluated consecutive patients who underwent emergent BAE-ERCP or EUS-BD for AC with SAA between January 2020 and March 2024. Technical success, clinical success, procedure time, and adverse events (AEs) were compared between the two groups.
Results:
This study included 23 patients in the BAE-ERCP group and 14 patients in the EUS-BD group. Technical success and clinical success rates did not significantly differ between the two groups (88% vs. 100%, P = 0.51 and 95% vs. 93%, P = 0.66). Similarly, the rate of AEs was comparable between the two groups (4% vs. 14%, P = 0.54). The median procedure time was significantly shorter in the EUS-BD group than in the BAE-ERCP group (32.5 [interquartile range; IQR, 28.8–52.5] minutes vs. 70.0 [IQR, 60.0–90.0] minutes, P < 0.01). In cases with grade 2 or 3 cholangitis, the rates of technical success, clinical success, and AEs did not significantly differ between the two groups. However, the median procedure time was significantly shorter in the EUS-BD group than in the BAE-ERCP group (32.5 [IQR, 28.8–52.5] minutes vs. 70 [IQR, 56.3–90.0] minutes, P < 0.01).
Conclusion
While both BAE-ERCP and EUS-BD can be performed safely and effectively in patients with AC and SAA, the procedure time is significantly shorter with EUS-BD than with BAE-ERCP.
5.Novel technique for endoscopic ultrasound-guided gallbladder drainage to skip the needle tract dilation step: Efficacy of a 6-mm antimigration metal stent with a thin, tapered delivery catheter
Keiichi HATAMARU ; Masayuki KITANO ; Masahiro ITONAGA ; Yasunobu YAMASHITA ; Takashi TAMURA ; Yuki KAWAJI ; Junya NUTA
International Journal of Gastrointestinal Intervention 2025;14(1):9-14
Background:
Endoscopic ultrasound-guided gallbladder drainage (EUS-GBD) has been recognized as an effective treatment for patients at high risk for surgery. An antimigration metal stent with tapered thin delivery system has recently been developed. The aims of this study were to evaluate the feasibility, safety, and longterm outcomes of EUS-GBD using the new metal stent.
Methods:
Between April 2017 and March 2020, 21 patients with acute cholecystitis unsuitable for cholecystectomy underwent EUS-GBD using the metal stent. The stent was 6 mm in diameter and 6 cm in length, with a large flare at both ends for antimigration, and mounted in a 7.5 Fr delivery catheter, which requires no dilation devices. We retrospectively evaluated clinical and technical success, adverse events, and stent patency.
Results:
The technical and clinical success rates of EUS-GBD using the metal stent were 95.2% and 100%, respectively. For 75% of the patients, metal stents could be placed without dilatation of the needle tract. These patients had significantly shorter procedure time (23.6 ± 9.8 min) than patients requiring needle tract dilatation (38.4 ± 17.1 min; P = 0.036). The median follow-up periods were 336 days (interquartile range [IQR] 152–919 days) and 1,135 days (IQR 1,009–1,675 days) for all and alive patients, respectively. No adverse events or recurrence of cholecystitis due to stent occlusion that occurred in any patient at follow-up was observed.
Conclusion
In conclusion, EUS-GBD using the newly designed metal stent showed excellent safety and longterm outcomes, and may be suitable as an alternative treatment in patients who are unsuitable for cholecystectomy.
6.Emergent treatment using balloon-assisted ERCP versus EUS-guided drainage for acute cholangitis in patients with surgically altered anatomy
Takahiro SHISHIMOTO ; Masahiro ITONAGA ; Reiko ASHIDA ; Yasunobu YAMASHITA ; Yuki KAWAJI ; Takashi TAMURA ; Hiromu MORISHITA ; Akiya NAKAHATA ; Yuto SUGIHARA ; Tomokazu ISHIHARA ; Masayuki KITANO
International Journal of Gastrointestinal Intervention 2025;14(1):2-8
Background:
No studies have compared balloon-assisted endoscope-guided endoscopic retrograde cholangiopancreatography (BAE-ERCP) and endoscopic ultrasonography-guided biliary drainage (EUS-BD) for emergent treatment of acute cholangitis (AC) in patients with upper gastrointestinal surgically altered anatomy (SAA).
Methods:
This study retrospectively evaluated consecutive patients who underwent emergent BAE-ERCP or EUS-BD for AC with SAA between January 2020 and March 2024. Technical success, clinical success, procedure time, and adverse events (AEs) were compared between the two groups.
Results:
This study included 23 patients in the BAE-ERCP group and 14 patients in the EUS-BD group. Technical success and clinical success rates did not significantly differ between the two groups (88% vs. 100%, P = 0.51 and 95% vs. 93%, P = 0.66). Similarly, the rate of AEs was comparable between the two groups (4% vs. 14%, P = 0.54). The median procedure time was significantly shorter in the EUS-BD group than in the BAE-ERCP group (32.5 [interquartile range; IQR, 28.8–52.5] minutes vs. 70.0 [IQR, 60.0–90.0] minutes, P < 0.01). In cases with grade 2 or 3 cholangitis, the rates of technical success, clinical success, and AEs did not significantly differ between the two groups. However, the median procedure time was significantly shorter in the EUS-BD group than in the BAE-ERCP group (32.5 [IQR, 28.8–52.5] minutes vs. 70 [IQR, 56.3–90.0] minutes, P < 0.01).
Conclusion
While both BAE-ERCP and EUS-BD can be performed safely and effectively in patients with AC and SAA, the procedure time is significantly shorter with EUS-BD than with BAE-ERCP.
7.Novel technique for endoscopic ultrasound-guided gallbladder drainage to skip the needle tract dilation step: Efficacy of a 6-mm antimigration metal stent with a thin, tapered delivery catheter
Keiichi HATAMARU ; Masayuki KITANO ; Masahiro ITONAGA ; Yasunobu YAMASHITA ; Takashi TAMURA ; Yuki KAWAJI ; Junya NUTA
International Journal of Gastrointestinal Intervention 2025;14(1):9-14
Background:
Endoscopic ultrasound-guided gallbladder drainage (EUS-GBD) has been recognized as an effective treatment for patients at high risk for surgery. An antimigration metal stent with tapered thin delivery system has recently been developed. The aims of this study were to evaluate the feasibility, safety, and longterm outcomes of EUS-GBD using the new metal stent.
Methods:
Between April 2017 and March 2020, 21 patients with acute cholecystitis unsuitable for cholecystectomy underwent EUS-GBD using the metal stent. The stent was 6 mm in diameter and 6 cm in length, with a large flare at both ends for antimigration, and mounted in a 7.5 Fr delivery catheter, which requires no dilation devices. We retrospectively evaluated clinical and technical success, adverse events, and stent patency.
Results:
The technical and clinical success rates of EUS-GBD using the metal stent were 95.2% and 100%, respectively. For 75% of the patients, metal stents could be placed without dilatation of the needle tract. These patients had significantly shorter procedure time (23.6 ± 9.8 min) than patients requiring needle tract dilatation (38.4 ± 17.1 min; P = 0.036). The median follow-up periods were 336 days (interquartile range [IQR] 152–919 days) and 1,135 days (IQR 1,009–1,675 days) for all and alive patients, respectively. No adverse events or recurrence of cholecystitis due to stent occlusion that occurred in any patient at follow-up was observed.
Conclusion
In conclusion, EUS-GBD using the newly designed metal stent showed excellent safety and longterm outcomes, and may be suitable as an alternative treatment in patients who are unsuitable for cholecystectomy.
8.Prevention of symptomatic pulmonary embolism for gynecologic malignancies with preoperative asymptomatic venous thromboembolism: GOTIC-VTE trial
Yoshifumi TAKAHASHI ; Hiroyuki FUJIWARA ; Kouji YAMAMOTO ; Masashi TAKANO ; Morikazu MIYAMOTO ; Kosei HASEGAWA ; Maiko MIWA ; Toyomi SATOH ; Hiroya ITAGAKI ; Takashi HIRAKAWA ; Mayuyo MORI-UCHINO ; Tomonori NAGAI ; Yoshinobu HAMADA ; Soichi YAMASHITA ; Hiroko YANO ; Tomoyasu KATO ; Keiichi FUJIWARA ; Mitsuaki SUZUKI ; On behalf of the GOTIC-VTE Trial Investigators
Journal of Gynecologic Oncology 2024;35(4):e37-
Objective:
In Japan, perioperative prophylaxis of pulmonary embolism (PE) in gynecologic cancer patients with preoperative asymptomatic venous thromboembolism (VTE) has not been well established yet. The GOTIC-VTE trial was a prospective, multi-center, single-arm clinical trial to investigate the prevention of postoperative symptomatic PE onset by seamless anticoagulant therapy from the preoperative period to 4 weeks after surgery instead of using intermittent pneumatic compression.
Methods:
Anticoagulant therapy was started immediately after asymptomatic VTE diagnosis and stopped preoperatively according to the rules of each institution. Unfractionated heparin administration was resumed within 12 hours postoperatively, and this was followed by the switch to low-molecular-weight heparin and subsequently, edoxaban; this cycle was continued for 28 days. Primary outcome was the occurrence of symptomatic PE in 28 days postoperatively. Secondary outcomes were the incidence of VTE-related events in 28 days and 6 months postoperatively and protocol-related adverse events.
Results:
Between February 2018 and September 2020, 99 patients were enrolled; of these, 82patients were assessed as the full analysis set, including 58 for ovarian cancer, fallopian tube, or peritoneal cancer; 21 for endometrial cancer; and 3 for cervical cancer. No symptomatic PE was observed within 28 days postoperatively; two patients had bleeding events (major bleeding and clinically relevant nonmajor bleeding) and three had grade 3 adverse events (increased alanine transaminase, aspartate aminotransferase, or gamma-glutamyl transferase).
Conclusion
The multifaceted perioperative management for gynecologic malignancies with asymptomatic VTE effectively prevented postoperative symptomatic PE.Trial Registration: JRCT Identifier: jRCTs031180124
9.Prevention of symptomatic pulmonary embolism for gynecologic malignancies with preoperative asymptomatic venous thromboembolism: GOTIC-VTE trial
Yoshifumi TAKAHASHI ; Hiroyuki FUJIWARA ; Kouji YAMAMOTO ; Masashi TAKANO ; Morikazu MIYAMOTO ; Kosei HASEGAWA ; Maiko MIWA ; Toyomi SATOH ; Hiroya ITAGAKI ; Takashi HIRAKAWA ; Mayuyo MORI-UCHINO ; Tomonori NAGAI ; Yoshinobu HAMADA ; Soichi YAMASHITA ; Hiroko YANO ; Tomoyasu KATO ; Keiichi FUJIWARA ; Mitsuaki SUZUKI ; On behalf of the GOTIC-VTE Trial Investigators
Journal of Gynecologic Oncology 2024;35(4):e37-
Objective:
In Japan, perioperative prophylaxis of pulmonary embolism (PE) in gynecologic cancer patients with preoperative asymptomatic venous thromboembolism (VTE) has not been well established yet. The GOTIC-VTE trial was a prospective, multi-center, single-arm clinical trial to investigate the prevention of postoperative symptomatic PE onset by seamless anticoagulant therapy from the preoperative period to 4 weeks after surgery instead of using intermittent pneumatic compression.
Methods:
Anticoagulant therapy was started immediately after asymptomatic VTE diagnosis and stopped preoperatively according to the rules of each institution. Unfractionated heparin administration was resumed within 12 hours postoperatively, and this was followed by the switch to low-molecular-weight heparin and subsequently, edoxaban; this cycle was continued for 28 days. Primary outcome was the occurrence of symptomatic PE in 28 days postoperatively. Secondary outcomes were the incidence of VTE-related events in 28 days and 6 months postoperatively and protocol-related adverse events.
Results:
Between February 2018 and September 2020, 99 patients were enrolled; of these, 82patients were assessed as the full analysis set, including 58 for ovarian cancer, fallopian tube, or peritoneal cancer; 21 for endometrial cancer; and 3 for cervical cancer. No symptomatic PE was observed within 28 days postoperatively; two patients had bleeding events (major bleeding and clinically relevant nonmajor bleeding) and three had grade 3 adverse events (increased alanine transaminase, aspartate aminotransferase, or gamma-glutamyl transferase).
Conclusion
The multifaceted perioperative management for gynecologic malignancies with asymptomatic VTE effectively prevented postoperative symptomatic PE.Trial Registration: JRCT Identifier: jRCTs031180124
10.Prevention of symptomatic pulmonary embolism for gynecologic malignancies with preoperative asymptomatic venous thromboembolism: GOTIC-VTE trial
Yoshifumi TAKAHASHI ; Hiroyuki FUJIWARA ; Kouji YAMAMOTO ; Masashi TAKANO ; Morikazu MIYAMOTO ; Kosei HASEGAWA ; Maiko MIWA ; Toyomi SATOH ; Hiroya ITAGAKI ; Takashi HIRAKAWA ; Mayuyo MORI-UCHINO ; Tomonori NAGAI ; Yoshinobu HAMADA ; Soichi YAMASHITA ; Hiroko YANO ; Tomoyasu KATO ; Keiichi FUJIWARA ; Mitsuaki SUZUKI ; On behalf of the GOTIC-VTE Trial Investigators
Journal of Gynecologic Oncology 2024;35(4):e37-
Objective:
In Japan, perioperative prophylaxis of pulmonary embolism (PE) in gynecologic cancer patients with preoperative asymptomatic venous thromboembolism (VTE) has not been well established yet. The GOTIC-VTE trial was a prospective, multi-center, single-arm clinical trial to investigate the prevention of postoperative symptomatic PE onset by seamless anticoagulant therapy from the preoperative period to 4 weeks after surgery instead of using intermittent pneumatic compression.
Methods:
Anticoagulant therapy was started immediately after asymptomatic VTE diagnosis and stopped preoperatively according to the rules of each institution. Unfractionated heparin administration was resumed within 12 hours postoperatively, and this was followed by the switch to low-molecular-weight heparin and subsequently, edoxaban; this cycle was continued for 28 days. Primary outcome was the occurrence of symptomatic PE in 28 days postoperatively. Secondary outcomes were the incidence of VTE-related events in 28 days and 6 months postoperatively and protocol-related adverse events.
Results:
Between February 2018 and September 2020, 99 patients were enrolled; of these, 82patients were assessed as the full analysis set, including 58 for ovarian cancer, fallopian tube, or peritoneal cancer; 21 for endometrial cancer; and 3 for cervical cancer. No symptomatic PE was observed within 28 days postoperatively; two patients had bleeding events (major bleeding and clinically relevant nonmajor bleeding) and three had grade 3 adverse events (increased alanine transaminase, aspartate aminotransferase, or gamma-glutamyl transferase).
Conclusion
The multifaceted perioperative management for gynecologic malignancies with asymptomatic VTE effectively prevented postoperative symptomatic PE.Trial Registration: JRCT Identifier: jRCTs031180124


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