Biomedical subjects

Seigo Onodera

Publications and source records attributed to Seigo Onodera.

3 recordsLinked to original sources

PubMed2002

[Is sentinel lymph node navigation useful for laparoscopic gastrectomy].

The aim of this paper is to assess the usefulness of sentinel lymph node navigation for laparoscopic gastrectomy. The standard lymph node dissection for gastric cancer is a D2 dissection. D2 dissection and sentinel lymph node biopsy can be performed with laparoscopic gastrectomy as well as with open surgery. Sentinel lymph node navigation surgery for gastric cancer has not yet been established, but once a strong consensus is reached we will be able to perform the laparoscopic gastrectomy safely.

Gastrectomy↗

PubMedDate not supplied

The buried bumper syndrome: an early complication of percutaneous endoscopic gastrostomy.

This paper reports on buried bumper syndrome that is an early complication of percutaneous endoscopic gastrostomy. The patient, a 69-year-old woman with impaired conversation due to Alzheimer's disease, was unable to swallow safely. She had undergone percutaneous endoscopic gastrostomy in the standard manner, and it had allowed her to be cared for in her own home. The patient's family had followed the instructions accompanying the device without difficulty until 5 days before presentation, when they noticed leakage around the tube. On examination, the stoma site was reddish, and at endoscopy, we were unable to confirm the internal bumper. Instead, there was a raised mound and a central small round concave area of gastric mucosa without ulceration and edema. Fluid under pressure could not be injected through the percutaneous endoscopic gastrostomy tube. The internal bumper had become embedded in the anterior abdominal wall. In this case, the first percutaneous endoscopic gastrostomy was removed with incision of abdominal wall under local anesthesia for a short period, and a second percutaneous endoscopic gastrostomy was created, without difficulty. Therefore, we should take greater care when we carry out percutaneous endoscopic gastrostomy in patients with dementia and without paralysis of the upper extremities.

Abdominal Wall↗

PubMedDate not supplied

An experimental assessment of suture techniques using Lapra-ty clips through the laparoscope and a case report: laparoscopic closure using Lapra-ty for a perforation of the sigmoid colon.

BACKGROUND/AIMS: As endoscopic procedures become various and complicated, it becomes necessary to develop alternative techniques for tissue suture and ligation. We have developed a new suture technique intracorporeal knotting. METHODOLOGY: An 8-cm suture material having a knot on the other side of a needle, was used in laparoscopic surgery. Furthermore, a 5-mm2 Vicryl mesh was pierced as a buttress. The Lapra-ty was used to secure the tissue. Under laparotomy, the forestomach of a male Donryu rat at 6 weeks of age was incised and sutured with 3-0 Vicryl. 3-0 Vicryl was secured with the knot substitute (group A) or three-throw knot (group B) under Nembutal anesthesia. The animals were sacrificed 7 days after operation. Specimens were taken from the forestomach. Those were fixed with 10% formalin and stained with hematoxylin eosin and Elastica Wangieson methods. The histological findings were compared between group A and group B. A successful laparoscopic closure using Lapra-ty is reported in a patient with a perforation of the sigmoid colon. RESULTS: Microscopically, in this method, neither erosion, ulcer nor microabscess is evidenced. This method may make an intracorporeal knot easy. Also we treated a patient who had a perforation of the sigmoid colon using Lapra-ty. The patient recovered without any trouble. CONCLUSIONS: This method could make ligation technique much easier and the operating time shorter.

Animals↗