Laparoscopic Bowel Resection in the Setting of Metastatic Colorectal Cancer

Background This study aimed to review the outcomes of laparoscopic colorectal resection for patients with stage IV colorectal cancer. Methods From the prospectively collected database for patients who underwent surgery for colorectal cancer in our institution, those with stage IV colorectal cancer who underwent elective resection of tumor during the period from January 2000 to June 2006 were included. The outcomes of those with laparoscopic resection were reviewed and comparison was made between patients with laparoscopic and open resection. Results A total of 200 patients (127 men) with median age of 69 years (range: 25–91 years) were included, and 77 underwent laparoscopic resection. Conversion was required in ten patients (13.0%) and all except one conversion were due to fixed or bulky tumors. There was no operative mortality in the laparoscopic group. The complication rate was 14% and the median postoperative hospital stay was 7 days. When patients with laparoscopic resection were compared with those with open operations, there was no difference in age, gender, comorbidity, or tumor size between the two groups. However, the complication rate was significantly lower in those with laparoscopic resection (14% versus 32%, P = 0.007) and the median hospital stay was significantly shorter (7 days versus 8 days, P = 0.005).The operative mortalities and the survivals were similar in the two groups. Conclusions Colorectal resection can be performed safely in patients with stage IV colorectal cancer. The operative outcomes in terms of complication rate and hospital stay compare favorably with patients with open resection. Presented in the Scientific Meeting of the Society of American Gastrointestinal and Endoscopic Surgeons on 18–22 April 2007 in Las Vegas, Nevada, USA.     

Outcomes of self-expandable metal stent as bridge to surgery versus emergency surgery for left-sided obstructing colon cancer: A retrospective cohort study

BackgroundLong-term outcomes of self-expandable metal stents (SEMSs) as bridges to surgery versus emergency surgery in the treatment of left-sided obstructing colon cancer remain unclear.MethodsUsing a nationwide inpatient database in Japan, we performed one-to-one propensity score matching to compare overall survival, the stoma requirement, postoperative complications, and the length of stay between the SEMS and emergency surgery groups.ResultsCompared with the emergency surgery group, the SEMS group showed worse survival (hazard ratio, 1.80; 95% confidence interval, 1.07–3.01), a higher incidence of postoperative ileus (8% vs. 4%, P = 0.010), a longer postoperative length of stay (14 vs. 12 days, P < 0.001), and a lower stoma requirement (10% vs. 29%, P < 0.001).ConclusionsSEMSs as bridges to surgery are associated with significantly poorer overall survival, a higher incidence of postoperative ileus, a longer length of stay, and a lower stoma requirement than is emergency surgery.     

Oncologic Outcomes of Self-Expanding Metallic Stent Insertion as a Bridge to Surgery in the Management of Left-Sided Colon Cancer Obstruction: Comparison with Nonobstructing Elective Surgery

Background  Self-expanding metallic stents (SEMS) have been used as a bridge to surgery in patients with obstruction by colorectal cancer, but the oncologic safety of this technique has not yet been established. The aim of the present study was to compare the outcomes of bridge to surgery after SEMS insertion and nonobstructing elective surgery. Methods  Between October 1999 and July 2007, 35 patients who had left-sided colon malignancy obstruction and underwent surgical resection after SEMS insertion (group A) were matched to 350 patients who underwent elective surgery for nonobstructing left-sided colon cancer based on stage II, III, and IV malignancies according to the 2001 American Joint Committee on Cancer (group B). Group B was randomly extracted from the colorectal database of our institute. The two groups were compared for clinicopathologic variables, complications, and survival rate. Results  There were no significant differences in clinicopathologic variables between group A and group B. However, the stoma formation rate was statistically different between the two groups (p = 0.003). Self-expanding metallic stent insertion had an adverse effect on the 5-year overall survival rate (A vs. B, 38.4% vs. 65.6%, respectively; p = 0.025) and the 5-year disease-free survival rate (A vs. B, 48.3% vs. 75.5%, respectively; p = 0.024). Conclusions  These data show that insertion of SEMS as a bridge to surgery in the management of left-sided colon cancer obstruction is possibly associated with adverse oncologic outcomes compared with nonobstructing elective surgery, but it is unclear what magnitude of this effect is related to the underlying obstruction rather than to the SEMS.     

A simplified operative technique for single-staged resection of left-sided colon obstructions: report of a 9-year experience

Purpose: The operative strategy for left-sided large bowel obstruction remains controversial. Because a safe and definitive single-staged operation that avoided a colostomy would clearly be in the patients' best interest, we conducted a prospective study to compare the efficacy of single-staged surgery (SSS) supplemented by the milking and swabbing technique (MST), with the conventional Hartmann's procedure (HP). Methods: In group 1 (n = 37) we performed traditional HP by resecting the site of obstruction and constructing an end colostomy. In group 2 (n = 33), after resecting the site of obstruction, instead of on-table lavage, we cleaned out the fecal content from the proximal and distal parts of the obstruction by milking the colon with the fingers, then swabbing the proximal and distal 10 cm of lumen of the colonic anastomosis with povidone iodinized stick sponges. Finally, we performed a primary one-layer anastomosis without fecal diversion. Results: The mortality, morbidity, and postoperative hospital stay after emergency left-side colonic resection and primary anastomosis by MST was comparable with those after HP (P > 0.05). Conclusions: We believe that SSS with MST is a viable choice in the surgical management of selected patients with obstructing lesions of the left colon. The advantages of SSS with MST lie in its good long-term results, and short-term reduced surgical intervention and hospital stay. Received: November 12, 2001 / Accepted: May 7, 2002 Reprint requests to: M. Turan, Inonu Muzesi Yani, K. Kazancilar Sok. No 1/4, 58070 Sivas, Turkey     

Systemic Chemotherapy and Two-Stage Hepatectomy for Extensive Bilateral Colorectal Liver Metastases: Perioperative Safety and Survival

Background Two-stage hepatectomy has been proposed for patients with bilateral colorectal liver metastases (CLM). The aim of this study was to compare the outcome of patients with CLM treated with preoperative chemotherapy followed by one- or two-stage hepatectomy. Methods From a prospective database, 214 consecutive patients who received preoperative systemic chemotherapy (fluoropyrimidine with irinotecan or oxaliplatin) followed by planned one- or two-stage hepatectomy were retrospectively analyzed (1998–2006). In patients undergoing two-stage procedures, minor hepatectomy (wedge or segmental resection[s]) was systematically performed before major (more than three segments), second-stage hepatectomy. Preoperative portal vein embolization (PVE) was performed if indicated. Results One- (group I) and two-stage(group II) hepatectomies were performed in 184 and 21 patients, respectively. Median number of metastases in groups I and II were two (range 1–20) and seven (range 2–20). All patients in group II had bilateral disease vs 39% in group I. Major hepatectomy was performed in all patients in group II and 79% in group I. PVE was performed in 18 group I and 12 group II patients without increase in morbidity. For group I, group II first stage, and group II second stage, respectively, morbidity (24%, 24%, 43%), median hospital stay (7 days, 6 days, 6.5 days) and 30 days postoperative mortality (2%, 0%, 0%) were not significantly different (P = NS). Median follow-up was 25 months; median survival has not been reached. One- and 3-year overall and disease-free survival rates from the time of hepatic resection were 95% and 75%, 63% and 39%, respectively in group I; 95% and 86%, 70% and 51%, respectively in group II (P = NS). Conclusions Two-stage hepatectomy with preoperative chemotherapy results in comparable morbidity and survival rates as one-stage hepatectomy. This approach enables selection and treatment of patients with multiple, bilateral CLM who will benefit from aggressive surgery with good outcomes. Presented at the Society for Surgery of the Alimentary Tract 48th Annual Meeting, May 2007, Washington, DC.     

Outcome after pancreaticoduodenectomy for cancer in elderly patients

During the last decade, the outcome after pancreaticoduodenectomy (PD) for cancer showed a continuous improvement. Therefore, an increasing number of patients, especially elderly patients, have been considered for this procedure. However, the debate on the possible deleterious influence of patients’ advanced age on their postoperative outcome after pancreaticoduodenectomy still continues. From June 1995 to October 2003, 70 elderly patients (range, 70–84 years) underwent pancreaticoduodenectomy with pancreatogastrostomy for cancer. Among them, 38 patients were 70–75 years old and 32 were ⩾75 years. Patients were identified from a prospective database of a single institution, and their records were reviewed retrospectively. Patient and tumor characteristics, postoperative morbidity and mortality, length of hospital stay, readmission rate, and overall survival were compared between the two groups. There were no statistical differences regarding the postoperative mortality (P=0.205), overall morbidity (P=0.267), mean length of hospital stay (P=0.345), and readmission rate (P=1) between both groups. Only delayed gastric emptying was significantly more frequent in patients ⩾75 years (P=0.039). The median overall survival was 20 months. Survival was significantly influenced by the pathological type of the tumor, with worse results for patients with ductal pancreatic adenocarcinoma. In elderly patients, age does not seem to influence the postoperative outcome after pancreaticoduodenectomy with pancreatogastrostomy.     

肠道支架减压在左侧大肠癌梗阻一期切除吻合中的应用

目的 探讨术前肠道支架减压在左侧大肠癌梗阻一期切除吻合中运用的安全性和有效性.方法 回顾性分析2005年5月至2008年9月浙江中医药大学附属第一医院收治的97例左侧大肠癌患者临床资料.支架联合手术组46例,为左侧大肠癌合并肠梗阻的患者,成功放置肠道支架减压后行手术一期切除吻合治疗.单纯手术组51例,为无梗阻的左侧大肠癌而限期手术治疗的患者.观察两组患者术后胃肠功能恢复、术后住院时间、并发症发生情况.采用t检验、χ~2检验对数据进行分析.结果 支架联合手术组46例中,1例乙状结肠癌患者于肠道支架植入术后第4天出现肠道穿孔致弥漫性腹膜炎,急诊行乙状结肠癌根治术.45例均顺利完成一期手术治疗,术后11～16 d痊愈出院,1例患者术后10 d死于呼吸道感染及心功能衰竭.术后随访4～48个月.两组患者在术后肛门排气时间、住院时间、围手术期并发症发生率、复发转移率、随访期内生存率方面比较差异无统计学意义(t=0.164,1.358,χ~2=0.252,1.200,0.580,P>0.05).结论 术前肠道支架减压是治疗左侧大肠癌梗阻患者安全、有效的方法.     

A defunctioning stoma significantly prolongs the length of stay in laparoscopic colorectal resection

Background  Reduction in length of stay has several advantages, including healthcare costs, patient choice, and minimizing hospital acquired infections. Additionally, length of stay is a surrogate marker of rate of recovery from the physiological insult of anaesthesia and surgery and complications thereof. A well-documented short-term benefit of laparoscopic compared to open colorectal resection is reduced length of stay. Methods  This was a review of prospectively collected data on all laparoscopic colorectal resections performed in our unit. We analyzed patients having primary colorectal anastomosis, to assess the effect of conversion compared to completion laparoscopically. Furthermore we compared those with or without diverting stoma, for the effect of stoma formation on postoperative length of stay (LOS). Results  Two hundred and thirteen patients had a colorectal resection. Of these 133 (62%) were left-sided or rectal resections. Resection with primary colorectal anastomosis was undertaken in 112 patients. A defunctioning stoma was performed in 13/112 (12%), and 32/112 (29%) were converted as the procedure could not be completed laparoscopically. Conversion was not significantly associated with increased LOS with weighted median of 6.5 and 6 days for conversion and no conversion, respectively. However, stoma formation significantly increased LOS to a median of 10 days compared with a median of 6 days in patients without a stoma (p = 0.001, Mann–Whitney U). Conclusions  The need for conversion, if performed in a timely and appropriate manner, has little impact on patient outcome compared to those completed laparoscopically, with no significant increase in LOS in our experience. In contrast, a diverting stoma does prolong LOS and some of the benefits of laparoscopic surgery may be lost unless patients requiring a stoma are identified preoperatively and have intensive pre- and postoperative stoma training.     

Oncologic safety of stent as bridge to surgery compared to emergency radical surgery for left-sided colorectal cancer obstruction

Background

There are still concerns about the oncologic safety of stent insertion for colorectal cancer obstruction. This study investigated whether the use of stents as a bridge to surgery negatively affect the long-term outcome compared to curative surgery for left-sided colorectal cancer obstruction.

Methods

Between January 2004 and December 2009, patients with left-sided colorectal cancer obstruction without distant metastasis were retrospectively reviewed. Forty-three patients underwent radical resection after preoperative stent insertion (stent group), whereas 48 underwent emergency surgery with curative intent (surgery group). The short- and long-term outcomes between the two groups were compared.

Results

The stent and surgery groups had similar demographics. There were no significant differences in primary anastomosis, laparoscopic-assisted surgery, operation time, time until first defecation and oral intake after surgery, postoperative hospital stay, and reoperation. The stent group had an average hospital stay 7 days longer than the surgery group. During the median follow-up period of 48.1 months, the 5-year disease-free survival rates were not significantly different between the stent and surgery groups (47.2 vs. 48.9 %, respectively; p = 0.499). Overall, the 5-year survival rate was also similar in the two groups (70.4 vs. 76.4 %, respectively; p = 0.941).

Conclusions

For left-sided colorectal cancer obstruction, stent insertion followed by surgery showed short-term advantages and similar oncologic outcomes compared to surgery without preoperative intervention. Stent insertion as a bridge to surgery is a safe and feasible treatment option for patients with colorectal cancer obstruction.     

Results of surgery for colorectal carcinoma with obstruction

Background/aims  Emergency surgery for obstructing colorectal carcinoma is thought to be associated with poor survival. The aim of the study is to assess the results of surgery for obstructing colorectal cancer. Materials and methods  From 1987 to 2004, 80 patients underwent emergency surgery for completely obstructing colorectal carcinoma (COC), and 171 patients underwent elective surgery for non-obstructing cancer (NOC). Morbidity, mortality, and the late outcome were assessed. Results  The groups were comparable for age, gender, tumor distribution, histopathologic characteristics, stage, morbidity, concomitant operations, recurrence, and sites of recurrence. High ASA class, poor performance status, and high mortality rate were recorded in COC group (p < 0.05). Mortality was related to ASA class (p < 0.001), performance status (p < 0.001), and obstruction (p = 0.014). ASA class was the single independent factor of morbidity (p < 0.001). The groups were comparable for survival (p > 0.05). Conclusions  Obstructing colorectal carcinoma seems to be associated with high mortality rate, but long-term survival seems to be the same with non-obstructing carcinoma.     

Revisional Bariatric Surgery by Conversion to Gastric Bypass or Sleeve—Good Short-Term Outcomes at Higher Risks

This is a retrospective study of prospectively collected data from 34 patients who had revisional bariatric surgery at a single centre. The aim was to report the indications for revisional surgery, operative time, conversion to open surgery, mortality, hospital stay, early and late complications, reoperations and short-term efficacy. From 2006 to 2011, 31 patients who formerly had been operated for morbid obesity with restrictive operations and 3 patients who had been operated in the upper abdomen for other morbidities (fundoplications 2, Heller's myotomy 1) underwent a revisional Roux-en-Y gastric bypass operation (n = 30) or sleeve gastrectomy (n = 4). Demographic data, perioperative characteristics and follow-up data were entered prospectively in the hospital's database for bariatric patients. Twenty-five operations were done by laparoscopic and nine by open technique. The mean operative time was 113.17 (33.98, 54–184) min. The mean postoperative hospital stay was 3.25 (5.71, 1–32) days. Intra-operative complications occurred in six patients (17.65%), postoperative complications in nine (26.47%), and major complications in three patients (8.82%), including leakage in the gastrojejunal anastomosis in two (5.88%) patients. The conversion rate to open surgery was 2.94% (one emergency patient). There was no mortality. Excess weight loss (%, ±SD) at 3 months follow-up averaged 42.31%, ±21.54. Revisional bariatric surgery can be performed with an increased but acceptable risk, with at least short-term weight loss comparable to primary operations.     

A prospective evaluation of short-term and long-term results from colonic stenting for palliation or as a bridge to elective operation versus immediate surgery for large-bowel obstruction

Background

The efficacy and safety of self-expandable metallic stent (SEMS) placement as a bridge to elective surgery or definitive palliation versus emergency operation to treat colorectal obstruction is debated. This study aimed to evaluate the outcomes of patients with colorectal obstruction treated using different strategies.

Methods

Subjects admitted to the authors’ department with colorectal obstruction (n = 134) were studied prospectively. They underwent endoscopic stenting as a bridge to elective surgery (SEMS group: n = 49) or for definitive palliation (n = 34). A total of 51 patients underwent immediate surgery without stenting (NO-SEMS). Treatment was decided by the senior on-call surgeon.

Results

Placement of SEMS was technically successful in 95.3 % and clinically successful in 98.7 % of cases. The short-term complications in the SEMS group were perforation (n = 1, 1.2 %), migration (n = 4, 4.9 %), occlusion (n = 4, 4.9 %), colon bleeding (n = 3, 3.7 %), and abdominal pain (n = 6, 7.4 %). The postoperative complication rate was 32.7 % in the SEMS group versus 60.8 % in the NO-SEMS group (P = 0.005), with a significant reduction in wound infections (26.5 vs 54.9 %; P = 0.004), abdominal abscess (14.3 vs 39.2 %; P = 0.006), respiratory morbidity (10.2 vs 37.3 %; P = 0.002), and intensive care treatment (10.2 vs 33.3 %; P = 0.007). The median postoperative hospital stay was 10 versus 15 days (P = 0.001). The in-hospital mortality rate in both groups was 2 %. Long-term follow-up evaluation showed less incisional hernia (6.3 vs 22.0 %; P = 0.04) and definitive stoma formation (6.3 vs 26.0 %; P = 0.01) in the SEMS group than in the NO-SEMS group, respectively. Kaplan–Meier survival curves showed a benefit for the SEMS group (log-rank test, 0.004). The long-term SEMS-related complication rate for the palliative patients was 43.8 %. The hospital readmission rate for SEMS complications was 34.4 %. Overall clinical success was 81.2 %.

Conclusions

In case of colorectal obstruction, endoscopic colon stenting as a bridge to elective operation should be considered as the treatment of choice for resectable patients given the significant advantages for short- and long-term outcomes. Palliative stenting is effective but associated with a high rate of long-term complications.     

Management of acute malignant large-bowel obstruction with self-expanding metal stent

Background Colorectal stents are being used for palliation and as a “bridge to surgery” in obstructing colorectal carcinoma. The purpose of this study was to review our experience with self-expanding metal stents (SEMS) as the initial interventional approach in the management of acute malignant large bowel obstruction. Methods Between February 2002 and May 2006, 67 patients underwent the insertion of a SEMS for an obstructing malignant lesion of the left-sided colon or rectum. Results In 55 patients, the stents were placed for palliation, whereas in 12 they were placed as a bridge to surgery. Stent placement was technically successful in 92.5% (n = 62), with a clinical success rate of 88% (n = 59). Two perforations that occurred during stent placement we retreated by an emergency Hartmann operation. In intention-to-treat by stent, the peri-interventional mortality was 6% (4/67). Stent migration was reported in 3 cases (5%), and stent obstruction occurred in 8 cases (13.5%). Of the nine patients with stents successfully placed as a bridge to surgery, all underwent elective single-stage operations with no death or anastomotic complication. Conclusions Stent insertion provided an effective outcome in patients with malignant colonic obstruction as a palliative and preoperative therapy.     

Predictors for Complications after Loop Stoma Closure in Patients with Rectal Cancer

Purpose This unmatched case control study was undertaken to evaluate factors contributing to surgery-related complications of loop stoma closure in patients with rectal cancer. Methods Cases were consecutive patients with complications identified from a local registry. Complications were defined as surgery-related and included 30 days overall mortality. Controls were all other patients with stoma closure from the same population of the registry without the endpoint. Results Of the 243 patients, 47 (19%) patients experienced a surgery-related complication, including 5 patients who died within 30 days after surgery. Significant risk factors in the univariate analysis were supervised operation (odds ratio 0.50; 95% confidence interval 0.27–0.95; P = 0.04), stapled anastomosis (odds ratio 0.40; 95% confidence interval 0.17–0.91; P = 0.04) and using a soft silicone drain (odds ratio 2.03; 95% confidence interval 1.07–3.85; P = 0.04). Using a soft silicone drain (odds ratio 2.17; 95% confidence interval 1.10–4.26; P = 0.03) and stapled anastomosis (odds ratio 0.38; 95% confidence interval 0.15–0.98; P = 0.04) were the only significant predictors in the multivariate analysis. Conclusions The present study in a homogeneous group of patients with rectal cancer as elective indication for temporary loop stoma construction confirms the high complications rate and mortality rate associated with stoma closure. Intraperitoneal drains should be omitted after loop stoma closure.     

Comparison of One-Stage Managements of Obstructing Left-Sided Colon and Rectal Cancer: Stent-Laparoscopic Approach vs. Intraoperative Colonic Lavage

Purpose

We evaluated the operative outcomes of laparoscopic surgery following self-expandable metallic stent compared to one-stage emergency surgical treatment.

Methods

From April 1996 to October 2007, 95 consecutive patients with left-sided malignant colorectal obstruction were enrolled. Twenty-five patients were assigned to the preoperative stenting and elective laparoscopic surgical treatment group (SLAP) and 70 to the emergency open surgery with intraoperative colon lavage group (OLAV).

Results

Among the 25 patients in the SLAP group, a primary anastomosis was possible in all patients and a diverting stoma was needed in one patient. The operative time was shorter in the SLAP group (198.53 vs. 262.17 min, P?=?0.002). Tumor size, number of retrieved lymph nodes, and pathological stage were similar in both groups. The rate of anastomotic failure was similar and postoperative complications occurred less in the SLAP group (5.9% vs. 31.4%, P?=?0.034). The passage of flatus and oral intake were resumed earlier in the SLAP group (2.88 vs. 3.68 days, P?=?0.046 and 5.18 vs. 6.65 days, P?<?0.001, respectively). The postoperative hospital stay was shorter in the SLAP group (10 vs. 15.4 days, P?=?0.013).

Conclusions

In patients with left-sided malignant colon and rectal obstruction, laparoscopic surgery after SEMS could be safely performed with successful early postoperative outcomes.     

An Interval >7 Weeks between Neoadjuvant Therapy and Surgery Improves Pathologic Complete Response and Disease–Free Survival in Patients with Locally Advanced Rectal Cancer

Background  We assessed whether the time interval between neoadjuvant therapy and surgery affects the operative and postoperative morbidity and mortality, the pathologic complete response (pCR) rate, and disease recurrence in locally advanced rectal cancer. Methods  One–hundred and thirty-two patients with locally advanced low– and mid–rectal cancer underwent neoadjuvant chemoradiation followed by radical resection (October 2000 to December 2006). Data on the neoadjuvant regime, neoadjuvant–surgery interval, final pathology, type of operation, operative time, intraoperative blood transfusions, postoperative complications, length of hospital stay, disease recurrence, and mortality were reviewed. The patients were divided into two groups according to the neoadjuvant–surgery interval: ≤7 weeks (group A, n = 48), and >7 weeks (group B, n = 84). Results  The groups were demographically comparable except for the group A patients being younger at operation. The median interval between chemoradiation and surgery was 56 days (range 13–173 days). Thirty-seven patients (28%) had a pCR and near pCR. Fifty three patients (40%) had complications. There was no in-hospital mortality. Surgery type, operative time, number of intraoperative blood transfusions, postoperative complications, and length of hospitalization were not influenced by the interval length. The pCR and near pCR rates were higher with longer interval: 17% in group A, 35% in group B (P = 0.03). Patients operated at an interval >7 weeks had significantly better disease–free survival (P = 0.05). Conclusions  A neoadjuvant–surgery interval >7 weeks was associated with higher rates of pCR and near pCR, decreased recurrence and improved disease–free survival.     

支架联合腹腔镜手术治疗梗阻性左半结肠癌的初步探讨

目的 探讨左半结肠癌并肠梗阻患者腔内支架置入后再行腹腔镜手术的疗效及手术时机的选择.方法 前瞻性将49例左半结肠癌并梗阻患者由计算机随机分入支架联合腹腔镜手术组（29例,其中支架后3 d手术15例、10 d后手术14例）和开腹手术组（20例）,对比分析3组患者一期手术吻合成功例数、中转开腹率、手术时间、住院时间、术中失血量、疼痛评分、永久造口率和术后并发症发生情况.结果 与开腹组比较,支架联合腹腔镜手术组患者一期手术吻合成功率高（62.1%比35.0%,P=0.004）,永久造口率低（6.9%比35.0%,P=0.024）,失血量少（15～200 ml比120～610 ml,P=0.000）,疼痛轻（术后疼痛评分2.5分、3.0分比8.0分,P=0.000）,相关并发症少（5例次比10例次）.支架联合腹腔镜手术两组之间,与3 d后手术组比较,10 d后手术组患者一期手术吻合成功率高（85.7%比40.0%,P=0.001）中转开腹率低（14.3%比46.7%,P=0.046）.结论 左半结肠癌并梗阻患者放置腔内支架后的腹腔镜手术是可行的,放置支架后10 d行腹腔镜手术较为合适.     

Robot-assisted laparoscopic surgery of the infrarenal aorta

Background Recently introduced robot-assisted laparoscopic surgery (RALS) facilitates endoscopic surgical manipulation and thereby reduces the learning curve for (advanced) laparoscopic surgery. We present our learning curve with RALS for aortobifemoral bypass grafting as a treatment for aortoiliac occlusive disease. Methods Between February 2002 and May 2005, 17 patients were treated in our institution with robot-assisted laparoscopic aorto-bifemoral bypasses. Dissection was performed laparoscopically and the robot was used to make the aortic anastomosis. Operative time, clamping time, and anastomosis time, as well as blood loss and hospital stay, were used as parameters to evaluate the results and to compare the first eight (group 1) and the last nine patients (group2). Results Total median operative, clamping, and anastomosis times were 365 min (range: 225–589 min), 86 min (range: 25–205 min), and 41 min (range: 22–110 min), respectively. Total median blood loss was 1,000 ml (range: 100–5,800 ml). Median hospital stay was 4 days (range: 3–57 days). In this series 16/18 anastomoses were completed with the use of the robotic system. Three patients were converted (two in group 1, one in group 2), and one patient died postoperatively (group 1). Median clamping and anastomosis times were significantly different between groups 1 and 2 (111 min [range: 85–205 min] versus 57.5 min [range: 25–130 min], p < 0.01 and 74 min [range: 40–110 min] versus 36 min [range: 22–69 min], p < 0.01, respectively) Total operative time, blood loss, and hospital stay showed no significant difference between groups 1 and 2. Conclusions Robot-assisted aortic anastomosis was shown to have a steep learning curve with considerable reduction of clamping and anastomosis times. However, due to a longer learning curve for laparoscopic dissection of the abdominal aorta, operation times were not significantly shortened. Even with robotic assistance, laparoscopic aortoiliac surgery remains a complex procedure. Presented at SAGES 2006, April 26–29 2006, Dallas, Texas, USA An erratum to this article can be found at     

Endo-Laparoscopic Colectomy Without Mini-Laparotomy for Left-Sided Colonic Tumors

Background  In performing “traditional” laparoscopic colectomy for left-sided colonic tumors, specimen retrieval necessitates a mini-laparotomy which often is the cause of postoperative pain, wound infection, and other pain-related complications. Here we describe a new technique of endo-laparoscopic anterior resection without mini-laparotomy, where specimen retrieval and colorectal anastomosis can be safely achieved with the use of the transanal endoscopic operation (TEO) device set-up. Methods   This hybrid natural orifice transluminal endoscopic surgery (NOTES) technique involves insertion of the TEO device in the lower rectum and luminal extraction of the specimen via the device. The technique is applicable to patients with small tumors (4 cm or less) in the left-sided colon or upper rectum, where transanal construction of a stapled colorectal anastomosis is intended. Results  The technique was attempted in ten patients (male:female 4:6) with median age of 66 years (range: 55–81 years). Five patients suffered from rectosigmoid tumors, whereas four patients had lesions in the sigmoid colon and one had a lesion in the descending colon. The median operating time was 127.5 min (range: 105–170 min) and the median blood loss was 20 ml (range: 20–50 ml). The median hospital stay was 7 days (range: 4–18 days), while the median maximum pain score (visual analog score) was 2 (range: 2–3) during in-hospital stay in this small series. Conclusions  Our preliminary experience indicates this new technique of endo-laparoscopic colectomy is feasible for selected patients with left-sided colonic tumors. Complications related to mini-laparotomy can be abolished entirely with this hybrid approach.