Curriculum Vitaes

uyama ichiro

  (宇山 一朗)

Profile Information

Affiliation
School of Medicine Faculty of Medicine, Fujita Health University
Degree
博士(医学)

J-GLOBAL ID
200901060501759407
researchmap Member ID
5000024656

Misc.

 12
  • Ichiro Uyama, Koichi Suda, Seiji Satoh
    Journal of Gastric Cancer, 13(1) 19-25, Mar, 2013  Peer-reviewed
    Laparoscopic gastrectomy has been widely accepted especially in patients with early-stage gastric cancer. However, the safety and oncologic validity of laparoscopic gastrectomy for advanced gastric cancer are still being debated. Since the late 90s', we have been engaged in developing a stable and robust methodology of laparoscopic radical gastrectomy for advanced gastric cancer, and have established laparoscopic distinctive technique for suprapancreatic lymph node dissection, namely the outermost layer-oriented medial approach. In this article, We present the development history of this method, and current status and future perspectives of laparoscopic gastrectomy for advanced gastric cancer based on our experience and a review of the literature. © 2013 by The Korean Gastric Cancer Association.
  • 宇山一朗
    胃がんperspective, 16(1) 5-12, 2013  
  • 宇山一朗
    Journal of Integrated Medicine, 23(4) 330-332, 2013  
  • Ichiro Uyama, Seiichiro Kanaya, Yoshinori Ishida, Kazuki Inaba, Koichi Suda, Seiji Satoh
    WORLD JOURNAL OF SURGERY, 36(2) 331-337, Feb, 2012  Peer-reviewed
    Robotic surgery for the treatment of gastric cancer has been reported, but the technique is not yet established. The objective of this study was to assess the feasibility and safety of our novel integrated procedure for robotic suprapancreatic D2 nodal dissection during distal gastrectomy. At our hospital from January 2009 to December 2010, a total of 25 consecutive cases of gastric cancer were treated by robotic distal gastrectomy with intracorporeal Billroth I reconstruction. These patients were enrolled in a prospective study to assess the safety and feasibility of robotic distal gastrectomy with nodal dissection by our novel integrated approach, which consists of three elements: arm formation, the surgical approach, a cutting device. To evaluate the learning curves involved in this approach, clinicopathologic features and surgical outcomes were compared between the initial (n = 12) and late (n = 13) phases. All operations were completed without the need for open or conventional laparoscopic surgery. The mean operating time was 361 +/- A 58.1 min (range 258-419 min), and blood loss recorded was 51.8 +/- A 38.2 ml (range 4-123 ml). The median number of retrieved lymph nodes was 44.3 +/- A 18.4 (range 26-95). R0 resection was accomplished in all cases. There were no deaths or complications related to pancreatic damage. Operating time and surgeon console time for the late phase were significantly shorter than those for the initial phase. Our novel robotic approach for D2 nodal dissection in gastric cancer is feasible and safe.
  • 宇山一朗, 須田康一, 吉村文博, 谷口桂三, 佐藤誠二
    日本外科学会雑誌, 113(4) 384-387, 2012  
  • 宇山一朗, 須田康一, 吉村文博, 谷口桂三, 佐藤誠二
    外科, 74(8) 825-828, 2012  
  • 宇山一朗, 金谷誠一郎, 石田善敬, 吉村文博, 須田康一, 谷口桂三, 佐藤誠二, 花井恒一, 堀口明彦, 杉岡 篤
    消化器外科, 35(4) 465-471, 2012  
  • Seiichiro Kanaya, Yuichiro Kawamura, Hironori Kawada, Hironori Iwasaki, Takashi Gomi, Seiji Satoh, Ichiro Uyama
    GASTRIC CANCER, 14(4) 365-371, Oct, 2011  Peer-reviewed
    We developed a new method of intracorporeal gastroduodenostomy, the delta-shaped anastomosis, in which only endoscopic linear staplers are used. In this report, we present the short- and long-term outcomes of our initial experience with this procedure. We retrospectively analyzed 100 consecutive gastric cancer patients who underwent the delta-shaped anastomosis procedure from May 2001 to November 2006. All of them underwent a laparoscopic distal gastrectomy with regional lymph node dissection. Quality of life was assessed with a questionnaire 6 months or more postoperatively, and the gastric remnant was evaluated by endoscopy one year following the surgery. Eight surgeons successfully performed the delta-shaped anastomosis without any conversion to laparotomy. The learning curve for all surgeons was steep and the mean time for the anastomosis was 13 min. Only one patient developed an anastomotic leak, and the leak was minor. Sixty-five patients tolerated a 1500 kcal/day soft diet at the time of discharge. The mean follow-up period was 54.9 months. Only one patient reported symptoms indicative of dumping. Two patients were diagnosed with reflux esophagitis, and approximately 70% had evidence of bile reflux, but severe gastritis of the remnant stomach on endoscopy was uncommon. The wide lumen of the delta-shaped anastomosis led to early, adequate postoperative oral intake without a significant incidence of dumping syndrome. The delta-shaped anastomosis is safe and simple and provides satisfactory postoperative results.
  • Akihiko Horiguchi, Ichiro Uyama, Masahiro Ito, Shin Ishihara, Yukio Asano, Toshiyuki Yamamoto, Yoshinori Ishida, Shuichi Miyakawa
    JOURNAL OF HEPATO-BILIARY-PANCREATIC SCIENCES, 18(4) 488-492, Jul, 2011  Peer-reviewed
    In the field of gastroenterological surgery, laparoscopic surgery has advanced remarkably, and now accounts for most gastrointestinal operations. This paper outlines the current status of and future perspectives on robot-assisted laparoscopic pancreatectomy. A review of the literature and authors' experience was undertaken. The da Vinci Surgical System is a robot for assisting laparoscopy and is safer than conventional endoscopes, thanks to the 3-dimensional hi-vision images it yields, high articular function with the ability to perform 7 types of gripping, scaling function enabling 2:1, 3:1, and 5:1 adjustment of surgeon hand motion and forceps motions, a filtering function removing shaking of the surgeon's hand, and visual magnification. By virtue of these functions, this system is expected to be particularly useful for patients requiring delicate operative manipulation. Issues of importance remaining in robot-assisted laparoscopic pancreatectomy include its time of operation, which is longer than that of open surgery, and the extra time needed for application of the da Vinci compared with ordinary laparoscopic surgery. These issues may be resolved through accumulation of experience and modifications of the procedure. Robot-assisted laparoscopic pancreatectomy appears likely to become a standard procedure in the near future.
  • A. Horiguchi, I. Uyama, S. Miyakawa
    JOURNAL OF HEPATO-BILIARY-PANCREATIC SCIENCES, 18(2) 287-291, Mar, 2011  Peer-reviewed
    Robotic surgery is the most advanced development in minimally invasive surgery. However, the number of reports on robot-assisted endoscopic gastrointestinal surgery is still very small. In this article, we describe total laparoscopic pancreaticoduodenectomy (PD) undertaken using the da Vinci Surgical SystemA (R) (Intutive Surgical). Three patients underwent robotic PD between November 2009 and February 2010. Following resection of the pancreatic head, duodenum, and the distal stomach, intracorporeal anastomosis was accomplished by Child's method of reconstruction, which includes a two-layered end-to-side pancreaticojejunostomy, an end-to-side choledochojejunostomy, and a side-to-side gastrojejunostomy. The time required for surgery was 703 +/- A 141 min, and blood loss was 118 +/- A 72 mL. The average hospital stay period was 26 +/- A 12 days. As a postoperative complication, pancreatic juice leak occurred in one case, but it was managed with conservative treatment. Of the three patients, one had cancer of the papilla of Vater, one had cancer of the pancreatic head, and one had a solid pseudopapillary neoplasm. In all cases, the surgical margin was negative for tumor. Robot-assisted PD required a long time, but organ removal with less bleeding was able to be safely performed owing to the high degree of freedom associated with the forceps manipulation and the magnified view. Similarly, pancreatojejunostomy could certainly be conducted. No major postoperative complications were found. Accumulation of da Vinci PD experience in the future will lead to safer and faster PD.
  • Fumihiro Yoshimura, Yoichi Sakurai, Shinpei Furuta, Risaburo Sunagawa, Kazuki Inaba, Jun Isogaki, Yoshiyuki Komori, Ichiro Uyama, Soji Ozawa
    ESOPHAGUS, 6(1) 55-61, Mar, 2009  Peer-reviewed
    Salvage surgery is one important therapeutic option after locoregional failure of definitive chemoradiotherapy (dCRT) in patients with advanced or recurrent esophageal carcinoma. We have performed cervical lymph node dissection as a salvage surgery after chemoradiotherapy in a patient with recurrent esophageal carcinoma. A 54-year-old Japanese man was admitted to our hospital because of multiple lymph node metastases after endoscopic submucosal dissection (ESD) for early-stage esophageal carcinoma. The patient underwent a circumferential ESD of early-stage esophageal carcinoma in another hospital. The esophageal carcinoma, measuring 75 x 60 mm in size, was a superficial spreading type located in the middle portion of the thoracic esophagus. Histology of the resected specimen revealed a moderately to poorly differentiated squamous cell carcinoma, and the depth of invasion was limited within the mucosal layer associated with a small area being attached to the muscularis mucosae. Five months after ESD, lymph node metastases in the regions of right recurrent nerve and the left tracheobronchus were found, for which dCRT was performed. These metastatic lymph nodes disappeared in the chest CT scan images. Lymph node metastasis in the region of the right recurrent nerve then reappeared 8 months after the completion of CRT. Considering the solitary lymph node metastasis and surgical invasiveness, lymph node dissection using a cervical approach was selected as a salvage surgery. Cervical approach for the lymph node dissection in the region of right recurrent nerve may be one feasible option as a minimally invasive salvage surgery for patients with recurrent esophageal carcinoma after dCRT.
  • 宇山一朗, 金谷誠一郎, 礒垣 淳, 谷口桂三, 石田善敬, 櫻井洋一
    手術, 63(6) 757-763, 2009  

Presentations

 19