JA Sapporo Kosei Hospital

Chūō-ku, Japan

JA Sapporo Kosei Hospital

Chūō-ku, Japan
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Kawamura H.,Hokkaido University | Ohno Y.,Hokkaido University | Ichikawa N.,Hokkaido University | Yoshida T.,Hokkaido University | And 3 more authors.
Surgical Endoscopy and Other Interventional Techniques | Year: 2017

Background: Esophagojejunostomy after laparoscopic total gastrectomy (LTG) is the most technically difficult type of anastomosis; thus, anastomotic complications such as leakage and stenosis sometimes occur. Identification of the safest anastomotic procedure is important for successful LTG. We have performed LTG since 2004 either with a circular stapler using an OrVil™ anvil or via the overlap Orringer method with a linear stapler. This retrospective study aimed to determine which method results in a lower incidence of anastomotic complications in patients undergoing LTG. Methods: Data on 188 consecutive patients who underwent LTG between April 2004 and August 2016 were retrospectively reviewed. Patients were divided into those who underwent esophagojejunostomy performed via a circular stapler using an OrVil™ anvil (group C, n = 49) or via the overlap method (group L, n = 139). Results: Anastomotic complications occurred in five of 188 esophagojejunostomies (2.7%). They comprised three cases of leakage (1.6%), and two of stenosis (1.1%). There was no significant difference in patient characteristics or hematological variables between groups C and L. There was no significant difference between groups in operation time, blood loss, lymph node dissection, and intraoperative anastomotic problems. The rate of anastomotic complications was significantly lower in group L (0.7%, 1/139) than in group C (8.2%, 4/49; p = 0.005). In particular, anastomotic leakage in group L tended to be lower (0.7% 1/139) than in group C (4.1% 2/49), although this difference was not significant. The rate of anastomotic stenosis in group L was significantly lower (0%, 0/139) than in group C (4.1%, 2/49; p = 0.017). Furthermore multivariate analysis showed anastomotic procedure was an independent factor for anastomotic complication. Conclusions: There were fewer anastomotic complications after overlap esophagojejunostomy than after esophagojejunostomy via the OrVil™ procedure, especially regarding anastomotic stenosis. We therefore recommend the overlap technique when performing esophagojejunostomy. © 2017 Springer Science+Business Media New York


Kawamura H.,JA Sapporo Kosei Hospital | Ishii C.,Hosei University
Surgical Laparoscopy, Endoscopy and Percutaneous Techniques | Year: 2012

Background: The aim of this study is to demonstrate a shaft formation of forceps and scope which provides higher degree of freedom of motion for single-port laparoscopic surgery (SPLS). The key to smoothly performing SPLS lies in understanding the formation in which the shaft conflict is minimized. However, there have been no reported studies on conflict reduction in SPLS from a shaft formation perspective. Methods: When performing SPLS, 3 instruments are passed into a narrow space, only 2 patterns of shaft formation can be obtained: a formation in which the 3 instruments rotate clockwise or counterclockwise (rotation formation) or a formation in which 1 instrument passes between the other 2 (cross formation). So motion spaces of the instruments in rotation formation compared with that in cross formation were tested using engineering methods. The range of the forceps' motion was assumed to be the space covered by the forceps till collision occurred between the moving forceps and either the other fixed forceps or the fixed scope. Examination of the range of movement of the scope was conducted in the same manner. The motion space with the area on the x-y horizontal is evaluated, as viewed from the peritoneal umbilicus port entry area. Results: The motion area of each instrument in rotation formation is 1.9 to 2.6 times wider than that in cross formation. Conclusions: Rotation formation provides high degree of freedom of motion for SPLS. Copyright © 2012 by Lippincott Williams & Wilkins.


Kawamura H.,JA Sapporo Kosei Hospital | Takahashi N.,Hokkaido University | Takahashi M.,JA Sapporo Kosei Hospital | Taketomi A.,Hokkaido University
Surgery Today | Year: 2014

Purposes: Sepsis caused by Gram-negative bacilli (GNB) is the most serious catheter-related bloodstream infection. However, the cause(s) of GNB propagation on the skin around needle or catheter insertion sites remain unclear. This observational study aimed to assess the differences in the microbial growth among various types of dressings used to cover injection sites, with a particular focus on GNB.Methods: We analyzed the bacterial populations on three types of surgical dressings; Tegaderm I.V. (semi-permeable, 27 sheets), IV3000 (highly permeable, 34 sheets) and Tegaderm CHG (chlorhexidine-impregnated, 26 sheets). The peripheral catheter site dressing was replaced every 3 days or when there was leakage or pain at the catheter site.Results: Bacterial growth was observed in all Tegaderm I.V. and IV3000 sheets and in only one (3.8 %) Tegaderm CHG sheet. The GNB detection rate was significantly lower in the IV3000 group (2.9 %) than in the Tegaderm I.V. group (63.0 %). No GNB growth was identified in the Tegaderm CHG group.Conclusions: Semi-permeable dressings were insufficient to prevent GNB infections, whereas highly permeable or chlorhexidine-impregnated dressings could prevent GNB infections. Chlorhexidine-impregnated dressings can control almost all bacterial growth. © 2014, Springer Japan.


Einama T.,Hokkaido University | Kamachi H.,Hokkaido University | Nishihara H.,Hokkaido University | Homma S.,Hokkaido University | And 10 more authors.
Pancreas | Year: 2011

Objectives: Recent studies have shown that the high affinity of mesothelin-CA125 interaction might cause intracavitary tumor metastasis. We examined the clinicopathologic significance and prognostic implication of mesothelin and CA125 expression in pancreatic ductal adenocarcinoma. Methods: Tissue samples from 66 pancreatic ductal adenocarcinomas were immunohistochemically examined. Proportion and intensity of constituent tumor cells with mesothelin and CA125 expression were analyzed and classified as high-level expression, defined as expression by more than 50% of tumor cells and/or moderate to strong staining, or low-level expression otherwise. Results: A high level of mesothelin was correlated with a higher histological grade (P = 0.049) and the level of blood vessel permeation (P = 0.0006), whereas a high level of CA125 expression was correlated with a higher recurrence rate (P = 0.015). The expression of mesothelin was strongly correlated with that of CA125 (P = 0.0041). Co-expression of mesothelin and CA125 were associated with an unfavorable patient outcome (P = 0.0062). Conclusions: This is the first report showing that co-expression of mesothelin and CA125 were in pancreatic ductal adenocarcinoma, and such co-expression is associated with a poor prognosis. Our finding suggests that co-expression of these two factors plays a significant role in the acquisition of aggressive clinical behavior. © 2011 by Lippincott Williams & Wilkins.


PubMed | Asahikawa University, JA Sapporo Kosei Hospital and Hokkaido University
Type: Journal Article | Journal: Oncology letters | Year: 2015

The present study demonstrated that luminal membrane mesothelin expression is a reliable prognostic factor in gastric cancer. Intraductal papillary mucinous neoplasms (IPMNs) often exhibit a spectrum of dysplasia, ranging between adenoma and carcinoma. Therefore, an immunohistochemical analysis of mesothelin expression in IPMN was performed in the present study, focusing on the localization of mesothelin. IPMNs were classified into two groups, IPMNs associated with invasive carcinoma and low-high (L-H) grade dysplasias. The tumors were classified as mesothelin-positive or -negative and in the mesothelin-positive cases, the localization of mesothelin was evaluated as luminal membrane- or cytoplasmic-positive. Among the 37 IPMNs, mesothelin expression was observed in 21 samples (56.8%), including 46.2% (12 out of 26) of the L-H dysplasia and 81.8% (9 out of 11) of the invasive carcinoma samples (P=0.071). Luminal membrane localization was observed in 10 samples (27%), including 15.4% (4/26) of the L-H dysplasia samples and 54.5% (6 out of 11) of the invasive carcinoma samples (P=0.022). Six patients experienced post-operative recurrence, with five of the recurrent tumors exhibiting mesothelin expression and all six exhibiting luminal membrane localization. It was concluded that immunohistochemical examinations for mesothelin expression and localization are clinically useful for prognostic assessments and decision making regarding further treatment subsequent to surgical procedures in patients with IPMN.


Kawamura H.,JA Sapporo Kosei Hospital | Tanioka T.,JA Sapporo Kosei Hospital | Funakoshi T.,JA Sapporo Kosei Hospital | Takahashi M.,JA Sapporo Kosei Hospital
Surgical Laparoscopy, Endoscopy and Percutaneous Techniques | Year: 2011

PURPOSE: We performed laparoscopic gastrectomy using an umbilical port in addition with one other port (dual-ports laparoscopy-assisted distal gastrectomy, DP-LADG) since December 2009. We describe a retrospective study to evaluate the possibility of DP-LADG compared with conventional LADG (C-LADG). METHODS: The indication for DP-LADG was preoperative clinical Stage IA gastric cancer. We compared 20 patients who underwent DP-LADG with 24 patients of clinical Stage IA patients who underwent C-LADG. RESULTS: The mean operation time was significantly longer for DP-LADG (250.5 min) than for C-LADG (197.5 min); however, the mean operation time for the last 5 patients undergoing DP-LADG (209±31.1 min) was almost the same as that for C-LADG. There were no significant differences between DP-LADG and C-LADG in terms of blood loss, number of lymph nodes dissected, rates of conversion to open surgery, postoperative complications, and length of postoperative hospital stay. CONCLUSIONS: DP-LADG is technically feasible. © 2011 by Lippincott Williams & Wilkins.


Kawamura H.,JA Sapporo Kosei Hospital | Yokota R.,JA Sapporo Kosei Hospital | Homma S.,JA Sapporo Kosei Hospital | Kondo Y.,JA Sapporo Kosei Hospital
Surgical Endoscopy and Other Interventional Techniques | Year: 2010

Background: Laparoscopic gastrectomy (LAG) is recognized as a less invasive surgery, but no advantage in terms of respiratory function recovery has been demonstrated. We investigated respiratory function recovery in the early period after LAG compared with open gastrectomy (OG) for measuring the recovery of oxygen saturation level (SaO2). Methods: The study population comprised 454 patients who underwent distal gastrectomy or total gastrectomy for preoperatively diagnosed T1N0 gastric cancer: 192 underwent laparoscopy-assisted distal gastrectomy (LADG), 190 underwent open distal gastrectomy (ODG), 42 underwent laparoscopy-assisted total gastrectomy (LATG), and 30 underwent open total gastrectomy (OTG). Results: The number of days until SaO2 reached 95% or higher in room air was significantly smaller in the LADG group (1.54 days) than in the ODG group (1.81 days; p = 0.010) and also significantly smaller in the LATG group (1.48 days) than in the OTG group (2.03 days; p = 0.043). Conclusions: LAG patients recovered their oxygenation earlier than OG patients. The laparoscopic procedure might confer a respiratory benefit for gastrectomy patients. © 2010 Springer Science+Business Media, LLC.


We investigated potential advantages of laparoscopy-assisted distal gastrectomy (LADG) in high-risk gastric cancer patients. We examined the differences among various risk groups by comparing the incidence of postoperative complications and invasiveness of LADG with those of open distal gastrectomy (ODG) based on the American Society of Anesthesiologists (ASA) criteria. A total of 639 patients with stage IA or IB gastric cancer were included in this study. ODG was performed between 2003 and 2005, and LADG was performed between 2006 and 2011. The incidence of postoperative complications in the LADG group (ASA1, 5.6%; ASA2, 3.8%; and ASA3, 5.7%) was significantly lower than that in the ODG group in all the ASA classes (ASA1, 16.9%; ASA2, 12.5%; and ASA3, 20%). Changes in the pain scores, body temperatures and blood analyses revealed that LADG was less invasive than ODG in all ASA classes. However, as the ASA class increased, the less invasive nature of LADG decreased. LADG may be less invasive than ODG, even in ASA3 patients. Hence, LADG may reduce the incidence of postoperative complications in ASA1, ASA2, and ASA3 patients. © 2013 Japan Society for Endoscopic Surgery, Asia Endosurgery Task Force and Wiley Publishing Asia Pty Ltd.


Kawamura H.,JA Sapporo Kosei Hospital | Tanioka T.,JA Sapporo Kosei Hospital | Shibuya K.,JA Sapporo Kosei Hospital | Tahara M.,JA Sapporo Kosei Hospital | Takahashi M.,JA Sapporo Kosei Hospital
International Surgery | Year: 2013

It is unknown whether reduced-port gastrectomy has a less invasive nature than conventional laparoscopy-assisted distal gastrectomy (C-LADG). So we compared 30 cases of dual-port laparoscopy-assisted distal gastrectomy (DP-LADG; using an umbilical port plus a right flank 5-mm port) as a reduced-port gastrectomy with 30 cases of C-LADG alternately performed by a single surgeon. No significant differences were observed in blood loss, intraoperative complications, the number of dissected lymph nodes, postoperative complications, the day of first defecation, analgesic agents required, changes in body temperature, heart rate, white blood cell count, serum albumin level, or lymphocyte count between the 2 groups. The amounts of oral intake in the DP-LADG group were significantly higher on postoperative days 9 and 10. We concluded that the amount of oral intake in the DP-LADG group was superior to that in the C-LADG group; however, no other evidence of DP-LADG being less invasive than C-LADG was obtained.


PubMed | JA Sapporo Kosei Hospital
Type: Case Reports | Journal: Surgery today | Year: 2015

A 17-year-old female was referred to our hospital with worsening dietary intake and abdominal bloating. She had epigastric fullness, but no abdominal pain. Gastrointestinal endoscopy revealed food residue and pyloric stenosis. A contrast-enhanced radiograph also showed pyloric stenosis, and gastrografin was not passed well through her pylorus. Computed tomography revealed similar findings. The biopsy results indicated hyperplasia of the gastric glands. The patient was diagnosed with a benign lesion, and underwent endoscopic balloon dilation several times. However, her stenosis worsened and we decided to perform surgery. In consideration of the cosmetic outcome, we performed laparoscopic distal gastrectomy. The postoperative course was good, and the patient was discharged on postoperative day 10. The final diagnosis was pyloric stenosis caused by heterotopic glands. No malignant lesions were found. Since gastric stenosis caused by heterotopic glands has not been reported previously, we consider this to be a very rare case.

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