Surgical management for rectal prolapse: an update

Surgical management of rectal prolapse remains a challenge with the bredth of choices available and varies on the international, national, regional and locoregional level depending on expertise, comfort and perception of the available evidence. Long-standing opinions on approach of repair, abdominal vs. perineal, have been based on limited evidence and on anesethetic methods that are now relics of the past. Laparoscopic surgical repair and modern anesthethesia has made the abdominal approach more attractive even to the octagenerian with multiple comorbidities. Surgical management should still be individualized and prior to offering surgical correction of rectal prolapse one must understand each patient's syptoms, particularly incontinence and constipation, as well the effect rectal prolapse has on the patient's overall quality of life.

Optimizing technology for the management of colon and rectal diseases

Surgery is one of the most dynamic sciences and the discipline of colorectal surgery continues to progress forward utilizing a combination of new technologies and innovative operative techniques to enhance patients care and improve outcomes.

A Sensorized Instrument for Skills Assessment and Training in Minimally Invasive Surgery

Minimally invasive surgery (MIS) is carried out using long, narrow instruments and significantly reduces trauma to the body, postoperative pain, and recovery time. Unfortunately, the restricted access conditions, limited instrument motion, and degraded sense of touch inherent in MIS result in new perceptual-motor relationships, which are unfamiliar to the surgeon and require training to overcome. Current training methods do not adequately address the needs of surgeons interested in acquiring these skills. Although a significant amount of research has been focused on the development of sensorized systems for surgery, there is still a need for a system that can be used in any training scenario (laparoscopic trainer, animal laboratories, or real surgery) for the purpose of skills assessment and training. A sensorized laparoscopic instrument has been designed that is capable of noninvasively measuring its interaction with tissue in the form of forces or torques acting in all five degrees-of-freedom (DOFs) available during MIS. Strain gauges attached to concentric shafts within the instrument allow the forces acting in different directions to be isolated. An electromagnetic tracking system is used for position tracking. Two prototypes of the sensorized instrument were constructed. Position calibration shows a maximum root mean square (RMS) error of 1.3 mm. The results of the force calibration show a maximum RMS error of 0.35 N for the actuation force, 0.07 N in the x and y directions, and 1.5 N mm for the torque calibration with good repeatability and low hysteresis. Axial measurements were significantly affected by drift, noise, and coupling leading to high errors in the readings. Novel sensorized instruments for skills assessment and training have been developed and a patent has been filed for the design and operation. The instruments measure forces and torques acting at the tip of the instrument corresponding to all five DOFs available during MIS and provide position feedback in six DOFs. The instruments are similar in shape, size, and weight to traditional laparoscopic instruments allowing them to be used in any training environment. Furthermore, replaceable tips and handles allow the instruments to be used for a variety of different tasks.

Optimizing recovery after laparoscopic colon surgery (ORAL-CS)

BACKGROUND

The objective of this study was to determine if intravenous ketorolac can reduce ileus following laparoscopic colorectal surgery, thus shortening hospital stay.

METHODS

This was a prospective, randomized, double-blind, placebo-controlled, clinical trial of patients undergoing laparoscopic colorectal resection and receiving morphine patient controlled analgesia (PCA) and either intravenous ketorolac (group A) or placebo (group B), for 48 h after surgery. Daily assessments were made by a blinded assistant for level of pain control. Diet advancement and discharge were decided according to strictly defined criteria.

RESULTS

From October 2002 to March 2005, 190 patients underwent laparoscopic colorectal surgery. Of this total, 84 patients were eligible for this study and 70 consented. Another 26 patients were excluded, leaving 22 patients in each group. Two patients who suffered anastomotic leaks in the early postoperative period were excluded from further analysis. Median length of stay for the entire study was 4.0 days, with significant correlation between milligrams of morphine consumed and time to first flatus (r = 0.422, p = 0.005), full diet (r = 0.522, p < 0.001), and discharge (r = 0.437, p = 0.004). There we no differences between groups in age, body mass index, or operating time. Patients in group A consumed less morphine (33 +/- 31 mg versus 63 +/- 41 mg, p = 0.011), and had less time to first flatus (median 2.0 days versus 3.0 days, p < 0.001) and full diet (median 2.5 days versus 3.0 days, p = 0.033). The reduction in length of stay was not significant (mean 3.6 days versus 4.5 days, median 4.0 days versus 4.0 days, p = 0.142). Pain control was superior in group A. Three patients required readmission for treatment of five anastomotic leaks (4 in group A versus 1 in group B, p = 0.15). Two of them underwent reoperation.

CONCLUSIONS

Intravenous ketorolac was efficacious in improving pain control and reducing postoperative ileus when anastomotic leaks were excluded. This simple intervention shows promise in reducing hospital stay, although the outcome was not statistically significant. The high number of leaks is inconsistent with this group's experience and is of concern.

Laparoscopic resection of gastrointestinal stromal tumors: not all tumors are created equal

BACKGROUND

Laparoscopic resection has become an accepted approach to gastrointestinal stromal tumors (GISTs), with acceptable early results published in the literature. Long-term recurrence rates, however, are still unclear, and the management of tumors in challenging locations requires exploration.

METHODS

A retrospective analysis of all patients undergoing a laparoscopic resection of gastric GIST in our institution between November 1997 and July 2004 was performed.

RESULTS

A total of 14 patients with 15 tumors were evaluated, 5 of which were located high on the lesser curve. All the patients had an attempted laparoscopic approach, with the following procedures performed: stapled wedge excision (n = 8), excision and manual sewing technique (n = 4), and distal gastrectomy (n = 1). Overall, there was a 15% (n = 2) conversion rate. Lesions found in the fundus and greater curvature areas were easily resected via simple stapled wedge excision. High lesser curve tumors were more difficult to manage and required a combination of methods for complete excision and preservation of the gastrointestinal junction including intraoperative gastroscopy, excision and manual sewing technique, and reconstruction over an esophageal bougie. There were no postoperative complications, and the length of hospital stay was 4.6 +/- 1.9 days. At a median follow-up period of 46.5 months (mean, 37.4 +/- 26 months), one patient experienced a recurrence (18 months postoperatively), with eventual disease-related death.

CONCLUSION

The laparoscopic approach to gastric GIST tumors is safe and associated with acceptable short- and intermediate-term results. High lesser curve GISTs can be safely approached laparoscopically using various techniques to ensure an adequate resection margin without compromise of the GE junction.

Objective analysis of gastroesophageal reflux after laparoscopic heller myotomy: an anti-reflux procedure is required

BACKGROUND

Controversy exists over the necessity of performing a concurrent antireflux procedure with a Heller myotomy. We therefore sought to objectively analyze gastroesophageal reflux following laparoscopic Heller myotomy where an antireflux procedure was not performed.

METHODS

A prospective database of 66 cases of laparoscopic Heller myotomy performed between November 1996 and June 2002 was reviewed. Previous, concurrent, or subsequent fundoplication was performed in 12 patients; therefore 54 patients without antireflux procedures were available for analysis. Follow-up included symptomatic assessment in 50 patients (93%). Heartburn was assessed on a four-point scale with clinical significance defined as >2 episodes/week. Objective testing, including endoscopy, esophagogram, manometry, and 24-h pH monitoring, was offered to all patients. Objective evidence of reflux was defined as the composite endpoint of positive 24-h pH monitoring or esophagitis on endoscopy.

RESULTS

Significant heartburn was reported in 15 of 50 patients (30%). Positive 24-h pH recordings were seen in 11 of 22 patients tested while esophagitis was seen in 13 of 21 patients tested, resulting in objective evidence of reflux in 18 of 30 patients tested (60%). Of these 18 patients, seven did not have significant heartburn. All 12 patients without objective reflux did not have significant heartburn. Therefore, of the 30 patients with objective testing, seven (23%) had objective reflux without subjective heartburn (silent reflux).

CONCLUSION

Objective analysis reveals an unacceptable rate of gastroesophageal reflux in laparoscopic Heller myotomy without an antireflux procedure. We therefore recommend performing a concurrent antireflux procedure.

Laparoscopic resections for colorectal cancer: does conversion survival?

BACKGROUND

This purpose of this study was to examine whether survival is affected when laparoscopic resections for colorectal cancer are converted to open surgery.

METHODS

A prospective database of 377 consecutive laparoscopic resections for colorectal cancer performed between November 1991 and June 2002 was reviewed. The TNM classification for colorectal cancer and the Kaplan-Meier method were used to determine survival curves for each group.

RESULTS

Conversion to an open procedure was required in 46 cases (12.8%). Converted and laparoscopic groups were similar in age, sex, comorbidities, and location and size of tumor. The converted group had a significantly higher weight (75 kg vs 69 kg, p = 0.013) and conversion score (2.18 vs. 1.87, p = 0.005). Patients with stage IV disease were significantly more likely to be converted than those with stage I-III disease (23.0% vs 11.2%, p = 0.04). There was no difference in the conversion rate between patients with stage I (14%), II (8%), or III (13%) colorectal cancers. Median follow-up was 30.5 months for stage I-III and 10.8 months for stage IV cancers. There were 190 patients followed at least 2 years and 73 patients followed at least 5 years. Survival curves demonstrate significantly lower 2-year survival after converted procedures as compared to laparoscopic (75.7% vs 87.2%, p = 0.02), with a trend toward lower 5-year survival (61.9% vs 69.7%, p = 0.077).

CONCLUSIONS

Survival rates at 2 and 5 years are lower for patients in the converted group compared to patients with LR. This finding could have serious impact on the treatment of patients with colorectal cancer. Further confirmation is required.

Laparoscopic nephrectomy for autosomal dominant polycystic kidney disease

BACKGROUND

The authors reviewed their experience with laparoscopic nephrectomy for autosomal dominant polycystic kidney disease to evaluate whether patient-related or surgery-related factors influence operative outcomes.

METHODS

A retrospective review was carried out of 22 consecutive laparoscopic nephrectomies performed by one surgeon in a university setting between March 1998 and March 2003. The impact of patient factors (body mass index, preoperative hemoglobin level, preoperative blood urea nitrogen and creatinine, kidney size and side, prior abdominal surgery, dialysis) and surgical factors (surgeon experience and preoperative embolization) on short-term outcomes (estimated blood loss, transfusion requirements, operative time, conversion, intra- and postoperative complications and length of stay) was analyzed using the Student's t-test, Pearson correlation, and Mann-Whitney and Fisher tests.

RESULTS

A total of 19 patients underwent 22 nephrectomies. The average patient age was 49 years (range, 36-65 years) and the average body mass index was 31.4 kg/m2 (range, 20.4-64.5 kg/m2). Fourteen patients (68%) were receiving dialysis. Fifteen right (68%) and 7 left (32%) nephrectomies were performed. The median kidney size was 22 cm (range, 8-50 cm). Five patients (23%) had preoperative embolization. The median operative time was 255 min (range, 95-415 min). There were no mortalities. The intraoperative complication rate was 18% (1 vena cava laceration, 1 cecal perforation, 1 dialysis fistula thrombosis, 1 intrarenal bleeding requiring conversion), and the postoperative complication rate was 32% (1 myocardial infarction, 1 urgent laparotomy for clinical peritonitis, 1 minor bile fistula, 1 AV fistula thrombosis, 2 incisional hernias, 1 urinary retention). Four procedures (18%) were converted (1 for vena cava laceration, 1 for cecal perforation, 1 for intrarenal bleeding, 1 for adhesions). The median blood loss was 400 ml (range, 100-5000 ml). Eight patients (36%) received transfusions (median, 2 units). The median length of stay was 4 days. The patients who required blood transfusions had lower preoperative hemoglobin levels. Preoperative embolization did not affect surgical outcome. However, surgeon experience significantly reduced operative time.

CONCLUSIONS

Laparoscopic nephrectomy for autosomal dominant polycystic kidney disease is a safe procedure, providing patients with a short hospital stay. Complication and conversion rates are relatively high.

Predicting conversion in laparoscopic colorectal surgery. Fellowship training may be an advantage

BACKGROUND

Laparoscopic colorectal surgery has clear advantages over open surgery; however, the effectiveness of the approach depends on the conversion rate. The objective of this work was to prospectively validate a model that would predict conversion in laparoscopic colorectal surgery.

METHODS

A simple clinical model for predicting conversion in laparoscopic colorectal surgery was previously developed based on a multivariable logistic regression analysis of 367 procedures. This model was applied prospectively to a follow-up group of 248 procedures by the same team, including 54 procedures performed by one new fellowship-trained surgeon.

RESULTS

Patients in the follow-up group were more likely to have cancer (56% vs 44%, p = 0.007) and were more obese (median, 71.0 vs 66.0 kg; p < 0.001). The rate of conversion in the follow-up group was unchanged (8.9% vs 9.0%, p > 0.05). Despite expected trends toward increasing risk of conversion with weight level (<60 kg, 6.8%; 60-<90 kg, 9.0%; >90 kg, 12.1%; p > 0.05) and malignancy (10.1% vs 7.3%, p > 0.05), the model did not distinguish well between groups at risk for conversion. Contrary to the model, however, the fellowship-trained surgeon had a conversion rate that was not higher than that of the other, more experienced surgeons (7.3% vs 9.3%, p > 0.05) even though he was less experienced, and operating on patients who were more obese (median, 75.0 vs 70 kg; p = 0.02) and more likely to have cancer (59% vs 55%, p > 0.05). Recalculated conversion scores that excluded the inexperience point for the fellowship-trained surgeon showed a good fit for the model. Considering the original and follow-up experience together (615 cases), the model clearly stratifies patients into low (0 points), medium (1-2 points), and high risk (3-4 points) for conversion, with respective rates of 2.9%, 8.1%, and 20% ( p = 0.001).

CONCLUSION

This model appears to be a valid predictor of conversion to open surgery. Fellowship training may provide sufficient experience so that learning curve issues are redundant in early practice. This model now requires validation by other centers.

"Needlescopic" heller myotomy

MIS continues to evolve with the introduction of new techniques and technology. This report discusses the use of "needlescopic" technology in the surgical management of achalasia. Heller myotomy procedures performed between January 1, 1997, and July 1, 2000, were analyzed and the results of 14 needlescopic procedures were compared with 15 laparoscopic procedures. Demographic and short-term outcome data were compared for each group using chi2, Fisher exact, and Student t tests where appropriate. Both groups were similar in age and gender. However, the needlescopic group weighed less (72.2 vs. 83.5 kg; P = 0.05). Intraoperatively, the needlescopic procedures were shorter (98.2 vs. 131.9 minutes; P = 0.03). There were no conversions to open surgery or differences in the number of intraoperative complications for either group. Postoperatively, the groups had similar complications, time to normal diet, and analgesia requirements. Nonetheless, the needlescopic group had a shorter length of stay in hospital (1.1 vs. 2.0 days; P = 0.04). Needlescopic Heller myotomy appears to be a safe treatment option, resulting in a decreased length of stay and improved wound cosmesis.

Minimally invasive surgery training in Canada: a survey of general surgery

BACKGROUND

The purpose of this study was to assess the state of surgical training in minimally invasive surgery (MIS) within Canadian academic surgical departments.

METHODS

A pretested questionnaire was distributed to the general surgery residents of participating Canadian academic surgical departments.

RESULTS

Fourteen of 16 residency programs participated and 235 of 388 residents (60%) responded to the survey. Residents expect to perform both basic (217/235 [92%]) and advanced (123/234 [53%]) MIS procedures on completion of their residency. However, only 41 of 233 (18%) believed that their advanced MIS training would be adequate. On a Likert scale, the most important factors influencing their training included limited advanced case volume (median, 5), limited opportunity in the operating room (OR) (median, 5), lack of attending surgeon interest (median, 4), limited OR time (median, 4), and a lack of surgical department support (median, 4). Residents were concerned about their ability to acquire these skills once they finished their training (median, 4), and 231 of 234 (99%) thought that there was an important role for a MIS surgeon within the academic setting (median, 5).

CONCLUSION

The rapid development of MIS has generated complex issues for resident training within the present Canadian academic surgical environment.

Health-related quality of life after laparoscopic and open nephrectomy

BACKGROUND

Postoperative recovery often is assessed with parameters (pain and return to work) susceptible to bias. This study sought objectively to compare postoperative health-related quality of life (HRQL) after laparoscopic and open nephrectomy with the Postoperative Recovery (PRS) (a validated questionnaire designed to assess pain), activities of daily living (ADL), and HRQL in postoperative patients.

METHODS

Patients undergoing contemporaneous laparoscopic and open nephrectomy received the PRS pre- and postoperatively. The results were analyzed with analysis of covariance (ANCOV) and survival analysis.

RESULTS

The 33 open nephrectomy and 38 laparoscopic patients in this study were comparable in age, gender, body mass index (BMI) and employment. Laparoscopic operative time was longer (p = 0.015), and the hospital stay was shorter (p<0.001). Laparoscopic patients had higher HRQL scores from postoperative days 3 to 365 (p<0.001), and they returned to preoperative HRQL faster (p<0.001).

CONCLUSIONS

An objective HRQL instrument confirms that laparoscopic nephrectomy patients recover faster and with a higher HRQL than open surgery patients. The PRS can be modified for use after other abdominal procedures, and may prove useful for comparisons of other minimally invasive surgical techniques.

Laparoscopic splenectomy for idiopathic thrombocytopenic purpura (ITP)

BACKGROUND

Although the short-term benefits of laparoscopic splenectomy (LS) have been well documented, long-term follow-up data of patients who have undergone LS for ITP are scarce. We report our long-term follow-up data in patients who underwent LS for idiopathic thrombocytopenic purpura (ITP).

METHODS

Data were obtained from a prospectively collected computer database of 52 patients who underwent LS between October 1992 and December 2000 for medically refractory ITP. Patients and their referring hematologist were contacted, and follow-up information was obtained for 45 patients.

RESULTS

Fifty-two patients (27 women and 25 men) underwent LS for ITP. Median operative time was 160 min (range, 70-335); and median blood loss was 100 cc (range, 20-1500). There were seven cases of intraoperative hemorrhage (13.7%), resulting in one conversion. A second case was converted due to inadequate working space in a patient with a 26-cm spleen. Accessory spleens were found in 17 patients (32.7%). Postoperative complications occurred in three patients (5.9%). There were no deaths. Median length of hospital stay was 2 days (range, 1-12). Follow-up data were obtained in 45 patients (86.5%), with a median follow-up of 51 months. Six patients did not respond to surgery initially, and another two patients developed recurrent disease, for a remission rate of 82.2%. Nine patients underwent a damaged red blood cell scan. This group included the two patients who suffered recurrences. A positive scan was obtained in three patients (33%), one of whom was a patient with recurrent disease. This patient underwent an uneventful laparoscopic excision of residual splenic tissue but continues to require intermittent steroids to maintain platelet counts. The two other patients with a positive scan remain in remission.

CONCLUSIONS

Laparoscopic splenectomy for ITP is safe and associated with low morbidity and a short hospital stay. Long-term follow-up showed that remission rates of ITP following LS are comparable to those reported in the literature on open surgery.

Laparoscopic versus open donor nephrectomy

BACKGROUND

As compared with open donor nephrectomy (OpenDN), laparoscopic donor nephrectomy (LapDN) offers donors more rapid recovery and recipients equivalent graft function, but LapDN costs remain greater. This study compared LapDN and OpenDN with cost-utility analysis.

METHODS

Utilities were assessed with time trade-off, probabilities derived from systematic review of the literature and the costs derived from 27 OpenDN and 34 LapDN patients treated contemporaneously. A societal perspective was taken. Lost employment costs were included. An incremental cost-effectiveness ratio (ICER) was calculated with best- and worst-case scenarios for confidence intervals. Sensitivity analyses assessed robustness.

RESULTS

LapDN costs are lower (11,170.71 dollars vs 12,631.91 dollars), whereas quality of life (QOL) is superior (0.7247 vs 0.6585 quality-adjusted life years [QALY], rendering LapDN a dominant strategy. The model was robust to all variables, and LapDN remained dominant from a payer perspective. In a worst-case scenario, the ICER for LapDN was at most 2,231.61 dollars per QALY.

CONCLUSIONS

LapDN offers improved QOL at lower costs, despite the fact that this analysis included patients treated during the learning curve of LapDN at our institution. By potentially increasing organ donor rates, LapDN may be further cost saving by decreasing the number of patients receiving dialysis.

Early experience with laparoscopic ileal pouch-anal anastomosis for ulcerative colitis

The purpose of this study was to describe our minimally invasive technique and outline perioperative and medium-term outcomes in patients undergoing laparoscopic ileal pouch-anal anastomosis (LIPAA) for ulcerative colitis. Data were obtained from a prospectively collected database of 13 LIPPA procedures performed for ulcerative colitis between May 1994 and November 2000. Medium-term quality-of-life follow-up was obtained by telephone interview. Eight males and five females had an LIPAA performed, all of whom had previously undergone total abdominal colectomy with ileostomy. Median operative time was 255 minutes (range, 200-398 minutes) with one conversion (8%) due to adhesions. There were no deaths or intraoperative complications; however, six patients experienced seven postoperative complications within 30 days of final closure of defunctioning ileostomy (two leaks, two wound infections, one pulmonary embolus, and two reoperations for small bowel obstruction). Median length of stay was 7 days (range, 5-13 days). Median follow-up was 24 months (range, 6-66 months). The median number of day and night bowel movements was 6.0 (range, 3-10) and 1.0 (range, 0-3), respectively, with five patients requiring medication to control frequency. None had incontinence of stool or retrograde ejaculation; however, one had occasional incontinence of gas, three had occasional nocturnal soiling, and one was impotent. Three patients (23%) had pouchitis, all treated successfully with oral antibiotics. All patients were satisfied with the outcome of their operation and all preferred their pouch to previous ileostomy. Patients reported their overall social, emotional, and physical well being to be satisfactory to excellent. Results of the SF-36, a generic quality-of-life survey, were similar to those from studies of patients following an open pelvic pouch procedure. The LIPAA is technically feasible in experienced centers. We believe that the technique is still evolving and that more time and experience is required to refine the procedure.

Laparoscopic splenectomy does the training of minimally invasive surgical fellows affect outcomes?

BACKGROUND

The training of surgeons and residents in laparoscopic surgery has become an important issue. The purpose of this study is to determine if the training of a laparoscopic fellow affects outcomes in patients undergoing laparoscopic splenectomy (LS).

METHODS

Data were obtained from a prospectively collected database of patients who underwent LS from August 1994 to November 1999. Outcomes of the last 25 cases, performed by fellows under supervision, were compared to 25 cases performed by staff surgeons prior to the introduction of fellows.

RESULTS

Patient demographics, preoperative platelet count, and splenic size were similar for the two groups. Outcome measures comparing the staff and the fellows group including operative time (151 vs 178 min, p = 0.055), blood loss (214 vs 162 ml, p = 0.40), intraoperative complications (3 vs 2, p = 1.0), need for transfusion (2 vs 3, p = 1.0), conversions (1 vs 0, p = 1.0), length of hospital stay (3.3 vs 2.5 days, p = 0.13), and postoperative complications (1 vs 2, p = 1.0) were similar for the two groups.

CONCLUSION

When performed by a fellow under supervision, LS has the same outcomes as when the procedure is performed by the teaching staff surgeon.

Local recurrence and survival after laparoscopic mesorectal resection forrectal adenocarcinoma

BACKGROUND

Laparoscopic resection for rectal cancer is controversial. Actuarial survival and local recurrence rates have not been determined.

METHODS

A prospective database containing 80 consecutive unselected laparoscopic resections of rectal cancers performed between November 1991 and 1999 was reviewed. Local recurrence was defined as any detectable local disease at follow-up assessment occurring either alone or in conjunction with generalized recurrence. The tumor node metastases (TNM) classification for colorectal cancers and the Kaplan-Meier method were used to determine staging and survival curves. The mesorectal excision technique was used during surgery.

RESULTS

The median follow-up period was 31 months for patients with stages I, II, and III cancer, and 15.5 months for patients with stage IV cancer. The overall 5-year survival rate was 65.1% for all cancer stages and 72.1% for stages I, II, and III cancer. No trocar-site recurrence was observed. The overall local recurrence rate was 3.75% (3/80) for all cancer stages, and 4.3% (3/70) for stages I, II, and III cancer.

CONCLUSIONS

The survival and local recurrence rates for patients with rectal cancer treated by laparoscopic mesorectal excision do not differ negatively from those in the literature for open mesorectal excision. Further validation is needed.

Needlescopic fundoplication

BACKGROUND

Minimally invasive surgery continues to evolve, with an emphasis on developing new techniques and applying new technology to surgical procedures. The purpose of this study was to compare the short-term outcomes of needlescopic fundoplication with those of conventional laparoscopic fundoplication.

METHODS

Between January 1999 and June 2000, 38 needlescopic fundoplications were performed, and the short-term outcomes for these patients were compared with those for a contemporary matched cohort of patients who had undergone a conventional laparoscopic fundoplication.

RESULTS

There was a nonsignificant trend toward decreased operative time (143.4 to 127 min; p = 0.13), blood loss (54.3 to 48 ml; p = 0.30), narcotic requirements (29.5 to 19.5 morphine equivalents; p = 0.32), and length of hospital stay (1.78 to 1.49 days; p = 0.10) in the needlescopic group. There were no significant differences in intraoperative complications (2.6% vs 2.6%; p = 1.0). Two needlescopic cases were converted to laparoscopic cases because of obesity. Postoperatively, there were no significant differences in rates of early dysphagia (7.9% vs 7.9%), bloating (13.2% vs 5.3%; p = 0.43), or other complications (5.3% vs 5.3%) between the groups. There was a significant reduction in mean operative time for needlescopic fundoplication after the first four cases (166 +/- 44 vs 120 +/- 32 min; p = 0.03).

CONCLUSIONS

Needlescopic fundoplication poses no disadvantage, and it offers the added cosmetic benefit of smaller incisions.

"Needlescopic" sigmoid resection

Minimally invasive surgical techniques and procedures continue to evolve with the trend toward fewer and smaller instruments. To our knowledge, this is the first reported case of sigmoid colon resection utilizing needlescopic technology. The patient was a 53-year-old woman diagnosed with a malignant lesion in the midsigmoid colon at 30 cm. A subsequent needlescopic sigmoid colon resection was performed and the patient was discharged home after an uneventful postoperative course. This case demonstrates that colon procedures that require major reconstruction may be performed needlescopically in selected patients.

Needlescopic surgery. A logical evolution from conventional laparoscopic surgery

BACKGROUND

The purpose of this study was to analyze the safety and feasibility of needlescopic surgery and to compare the short-term outcomes relative to conventional laparoscopic surgery.

METHODS

Needlescopic surgery patients were compared to matched cohorts of conventional laparoscopic surgery patients from the same prospective database for a variety of selected procedures.

RESULTS

A total of 101 needlescopic procedures were analyzed (30 cholecystectomy, 28 Nissen fundoplication, 12 bilateral sympathectomy, 10 splenectomy, 10 Heller myotomy, three adrenalectomy, two colon resection, two splenic cyst excision, four other). There was no significant difference between the needlescopic and conventional laparoscopic groups in conversion rates, morbidity, or mortality. A higher proportion of patients were in hospital

Laparoscopic colorectal resection in octogenarians

BACKGROUND

The number and proportion of patients aged ?80 years are increasing. These patients often require surgical care and suffer subsequent high rates of morbidity and mortality. However, the surgical outcomes of laparoscopic colorectal resection in octogenarians are not well documented.

METHODS

Octogenarians were identified from a large prospective database comprising 507 consecutive laparoscopic colorectal resections performed between 1991 and 1999 in a university setting. Preoperative comorbidity and surgical outcomes were analyzed.

RESULTS

Sixty-two patients (30 men, 32 women) aged ?80 years were identified. Their mean age and weight were 85 years and 63 kg, respectively. Seven patients (11%) were converted to an open procedure. Four (6%) intraoperative complications occurred in four patients (one colon perforation, one small bowel perforation, one burned gallbladder serosa, and one missed lesion), necessitating two conversions. Twenty -four postoperative complications occurred in 19 patients (31%) (six ileus [10%], five wound infections [8%], five cardiac problems [8%], two urinary retentions [3%], two hemorrhages [3%], one abscess [2%], one pneumonia [2%], and two other [3%]). Intraoperative complications did not increase postoperative morbidity. Three patients (5%) died within 30 days of surgery. When the procedure was completed laparoscopically, the overall median postoperative hospital stay was 10.0 days; occurrence of a postoperative complication increased the median length of stay to 15.0 days.

CONCLUSIONS

These results are superior to published historical controls involving open colorectal resection in octogenarians. Overall mortality, lung, and urinary tract complications were decreased, and there were no reoperations for small bowel obstruction. Laparoscopic colorectal resection is technically feasible and can be done safely in elderly patients. Results require randomization against those for open surgery to elucida te the real advantages of this technique.

Does a laparoscopic approach to total abdominal colectomy and proctocolectomy offer advantages?

BACKGROUND

Controversy exists regarding the feasibility, safety, and outcomes of laparoscopic total abdominal colectomy (LTAC) and laparoscopic total proctocolectomy (LTPC). The object of this study was to assess the outcomes of LTAC and LTPC and compare them with those of institutional open procedure used as controls.

METHODS

Perioperative data and surgical outcomes of patients who underwent TAC or TPC were analyzed and compared retrospectively at a single institution between 1991 and 1999.

RESULTS

A total of 73 TACs performed during a 9-year period were evenly distributed between laparoscopic (n = 37) and open (n = 36) approaches. There were no significant differences between patient groups with respect to genders, age, weight, proportion of patients with inflammatory bowel disease, and the number of patients undergoing ileorectal anastomosis. The median operative time was longer with the laparoscopic method (270 vs 178 min; p = 0.001), but the median length of hospital stay was significantly shorter (6 vs 9 days; p = 0.001). The short-term postoperative complication rate up to 30 days from surgery was not statistically different (25% vs 44%; p = 0.137), although there was a clear trend toward a reduced number of overall complications in the laparoscopic group (9 vs 24). Wound complications were significantly fewer (0% vs 19%; p = 0.015) and postoperative pneumonia was nonexistent in laparoscopic patients. Long-term complications also were less common in the laparoscopic group (20% vs 64%; p = 0.002), largely because of reduced incidence of impotence, incisional hernia, and ileostomy complications. Total proctocolectomy was performed laparoscopically in 15 patients and with an open procedure in 13 patients over the same period. There were no statistically significant differences between the two groups with respect to gender, age, weight, and diagnosis. Median operating time was longer for the laparoscopic patients (400 vs 235 min; p = 0.001), whereas the length of hospital stay, morbidity, and mortality were not significantly different.

CONCLUSIONS

The results indicate that LTAC can be performed safely with a statistically significant reduction in wound and long-term postoperative complications, as compared with its open counterpart. Operating time is increased, but there is a marked reduction in length of hospital stay. Preliminary results demonstrate that LTPC also is technically feasible and safe, with equal morbidity, mortality, and hospital stay, as compared with open procedures. Studies with larger numbers of patients and a randomized controlled trial giving special attention to patient quality-of-life issues are needed to elucidate the real advantages of this minimally invasive technique.

Transperitoneal laparoscopic nephrectomy for giant polycystic kidneys: a case control study

OBJECTIVES

To describe the technique and compare the surgical outcomes of patients with autosomal dominant polycystic kidney disease (ADPKD) undergoing laparoscopic or open nephrectomy for giant kidneys.

METHODS

The surgical outcome of our first 10 consecutive patients with ADPKD who underwent laparoscopic nephrectomy was analyzed from a large prospective computer database. The results were compared with the 10 most recent open nephrectomy procedures performed for ADPKD at the same institution. To facilitate safe laparoscopic hilar dissection, the kidneys were made manageable by volume reduction, accomplished through diligent cyst puncture and aspiration using a novel prototype suction device with a beveled tip.

RESULTS

No statistically significant differences were found between the laparoscopic and open surgical groups relative to patient sex, age, or median preoperative kidney size (24.0 versus 21.5 cm, respectively). The laparoscopic patients were significantly heavier than their open counterparts (94 versus 78 kg, P = 0.0095) and had a longer operative time (247 versus 205 minutes, P = 0.04). One conversion to open surgery occurred in the laparoscopic group because cysts were adherent to the spleen and colonic mesentery. No intraoperative complications or deaths occurred in either group and the postoperative complications were similar. The mean length of the postoperative hospitalization was markedly reduced with the laparoscopic compared with the open approach (2.6 versus 6.6 days, P = 0.00002). At a median of 12 months after surgery, none of the laparoscopic patients had recurrent pain, bleeding, or infection.

CONCLUSIONS

Laparoscopic nephrectomy is technically safe and feasible in patients with ADPKD. Progressive cyst aspiration is a critical step, facilitating the identification of vital structures and the creation of enough abdominal cavity space to operate. The advantages of this minimally invasive technique include a short hospital stay, minimal pain, low morbidity, and superior cosmesis.

Laparoscopic excision of retroperitoneal tumors: technique and review of the laparoscopic experience

A technique for laparoscopic excision of benign retroperitoneal tumors, including a teratoma and two cystic lesions, is described. Laparoscopic resection of a 12-cm retroperitoneal teratoma was accomplished with the patient in the left lateral decubitus position. Medial mobilization of the ascending colon and the duodenum was required for access to the lesion. Resections of two cystic lesions (measuring 20 cm and 12 cm) were performed with the patients in the lithotomy position. The colon required medial mobilization in both cases to gain access to the cysts. Once the cysts were dissected from surrounding structures, they were punctured, and the aspirated fluid was sent for cytologic analysis. There were no complications or conversions. Mean operating time was 122 minutes (range, 80-190). Patients were discharged 1 day after surgery, requiring only nonsteroidal anti-inflammatory medications for analgesia. Retroperitoneal tumors can be resected laparoscopically with careful preoperative investigation and meticulous laparoscopic technique. A major advantage of laparoscopic resections is that the patient recovers rapidly with minimal morbidity.

Septic complications of elective laparoscopic colorectal resection

BACKGROUND

We set out to determine the rate and pattern of septic complications of the surgical wound, abdominal cavity, and urinary and respiratory tracts following laparoscopic colorectal resection.

METHODS

A longitudinal database of 500 consecutive cases of colorectal resections was reviewed.

RESULTS

The total wound infection rate was 7.2% (36/500) and included infections of the abdominal wall wounds (32/500, 6.4%) and the perineal wounds (4/50, 8%). The anastomotic leak rate in 418 patients who underwent resection with primary anastomosis was 3.3% (14/418). Intraabdominal abscesses were diagnosed in 1% (5/500) of patients. Urinary tract infections were rare (3/500, 0.6%), as was postoperative pneumonia (6/500, 1%).

CONCLUSIONS

This study confirms the low rate of postoperative pneumonia observed with all other minimally invasive procedures. Intraabdominal abscesses, urinary tract infections, and postoperative pneumonia occur considerably less frequently than in reported historical controls for open surgery. The rates of abdominal wound infection and anastomotic leak in laparoscopic colorectal resection appear to be equivalent to traditional surgery, whereas the rate of perineal wound sepsis is lower. Comparative studies are needed to determine the differential costs of the septic episodes associated with the two approaches.

Defining a learning curve for laparoscopic colorectal resections

PURPOSE

The purpose of this review was to define the learning curve for laparoscopic colorectal resections.

METHODS

A prospectively accumulated, computerized database of all laparoscopic colorectal resections performed by three surgeons between April 1991 and March 1999 was reviewed.

RESULTS

A total of 461 consecutive resections were evenly distributed among three surgeons (141, 155, and 165). Median operating time was 180 minutes for Cases 1 to 30 in each surgeon's experience and declined to a steady state (150-167.5 minutes) for Cases 31 and higher. Subsequently, Cases 1 to 30 were considered "early experience," whereas Cases 31 and higher were combined as "late experience" for statistical analysis. There were no significant differences between patients undergoing resections in the early experience and those undergoing resections in the late experience with respect to age, weight, or proportion of patients with malignancy, diverticulitis, or inflammatory bowel disease. There were greater proportions of males (42 vs. 54 percent, P = 0.046) and rectal resections performed (14 vs. 32 percent, P = 0.002) in the late experience. Trends toward declining rates of intraoperative complications (9 vs. 7 percent, P = 0.70) and conversion to open surgery (13.5 vs. 9.7 percent, P = 0.39) were observed with experience. Median operating time (180 vs. 160 minutes, P < 0.001) and overall length of postoperative hospital stay (6.5 vs. 5 days, P < 0.001) declined significantly with experience. There was no difference in the rate of postoperative complications between early and late experience (30 vs. 32 percent, P = 0.827).

CONCLUSIONS

The learning curve for performing colorectal resections was approximately 30 procedures in this study, based on a decline in operating time, intraoperative complications, and conversion rate. Learning was also extended to clinical care because it was appreciated that patients could be discharged to their homes more quickly.

Predicting conversion to open surgery in laparoscopic colorectal resections. A simple clinical model

OBJECTIVE

The objective of this study was to develop a simple model for clinical use in predicting the individual risk of conversion to open surgery in patients undergoing laparoscopic colorectal resections.

METHODS

A multiple logistic regression analysis of 367 laparoscopic colorectal resections completed between 1991 and 1998 was performed. The following 13 factors were considered: patient-specific factors (age, gender, weight levels less than 60 kg 60-90 kg, 90 kg or more), disease-specific factors (Crohn's disease, diverticulitis, malignancy, fistula), and procedure-specific factors (resection of the hepatic flexure, splenic flexure, sigmoid, rectum, perineum, experience with less than 50 cases). A scoring system was developed on the basis of the three factors found to be predictive of the risk for conversion to open surgery: diagnosis of malignancy (odds ratio 3.23; p = 0.0037; one point), surgeon experience with 50 cases or less (odds ratio 2.26; p = 0.0363; one point), and weight level (odds ratio 3.42; p = 0.005; 60 to 90 kg, one point, 90 kg or more, two points).

RESULTS

The predicted conversion rates for the cumulative scores of 0 to 4 points were 1.1%, 3.3%, 9.8%, 25.4%, and 49.7%, respectively. No significant difference was found between predicted and actual conversion rates, indicating a good fit of the model (chi square = 1.774; p > 0.5).

CONCLUSIONS

This novel scoring system is simple, accurate, and readily applicable in an office setting. It represents the large experience of one surgical group and remains to be validated by other centers.

Achalasia developing years after surgery for reflux disease: case reports, laparoscopic treatment, and review of achalasia syndromes following antireflux surgery

Two case reports demonstrate the paradoxical occurrence of achalasia many years after the successful surgical treatment of gastroesophageal reflux disease (GERD). These patients had remedial surgery laparoscopically. The three types of achalasia syndromes that can follow antireflux surgery are discussed. In type 1, primary achalasia is misdiagnosed as GERD and inappropriate antireflux surgery causes worsening dysphagia immediately after surgery without any symptom-free interval. In type 2, secondary iatrogenic achalasia is seen early after antireflux surgery and is characterized by the presence of stenosis and scar formation at the site of the fundic wrap. Although the motility studies resemble achalasia, the repair needs only to be taken down and refashioned when there is no response to balloon dilatation. In type 3, illustrated by the case reports, primary achalasia follows antireflux surgery after a significant symptom-free interval. There is complete absence of any stenosis or fibrosis of the esophagus and periesophageal tissues at remedial surgery. Moreover, surgical treatment of this condition needs to include esophageal myotomy.

Needlescopic decapsulation of a splenic epithelial cyst

As technology advances, the techniques of laparoscopic surgery are being refined and their application is expanding to include many disease processes and organs. The new-generation laparoscopic instruments are becoming smaller (less than 5 mm). Expected advantages include improvements in cosmesis and patient satisfaction, and decreased postoperative analgesic requirements. Non-neoplastic cysts of the spleen are rare, and their management has evolved from total open splenectomy to laparoscopic cyst decapsulation. A 22-year-old woman with a symptomatic 10-cm epithelial cyst was treated by splenic decapsulation with needlescopic instruments (3 mm or smaller). Three trocars were used: one 12-mm umbilical and two 3-mm subcostal ports. The cyst was punctured by a Veress needle, and after drainage of straw-coloured fluid, circumferential decapsulation with 5-mm laparoscopic shears through the umbilical port site was done. The patient was discharged within 24 hours, having had a single intramuscular injection of meperidine and an excellent cosmetic result.

Liver hematoma after laparoscopic nissen fundoplication: a case report and review of retraction injuries

Laparoscopic fundoplication is a safe and effective alternative to long-term medical therapy in select patients with gastroesophageal reflux disease. Among the technical challenges of laparoscopic fundoplication, retraction of the left lobe of liver can cause significant morbidity. Intraoperative complications from retraction injuries have been reported in the literature, but postoperative complications arising from liver retraction have not been published. The authors present a case of a symptomatic liver hematoma requiring hospital readmission for diagnosis and pain control and a review of retraction injuries.

Should enteric fistulas from Crohn's disease or diverticulitis be treated laparoscopically or by open surgery? A matched cohort study

PURPOSE

The aim of this study was to study a group of consecutive patients with enteric fistulas treated by laparoscopic surgery and to compare outcomes with a matched group of patients treated by open surgery.

METHODS

The outcomes of 13 patients with Crohn's disease or sigmoid diverticulitis with enteric fistulas treated laparoscopically (Group I) were compared with 13 patients matched for age, weight, gender, diagnosis, and characteristics of fistulas and treated by conventional surgery (Group II) during the same period.

RESULTS

No patient died postoperatively in either group. Mean operative time was 183 minutes in Group I vs. 154 minutes in Group II (P = 0.280). No significant difference was found between Groups I and II in the number of patients with major postoperative complications (3 vs. 5; P = 0.462), or postoperative stay (7.6 +/- 3.6 vs. 9.2 +/- 3 days; P = 0.239). Conversion to open laparotomy occurred in one (7.7 percent) patient from Group I. No patient required readmission for secondary surgery in Group I, and two patients were readmitted and underwent reoperation for complications in Group II (P = 0.462).

CONCLUSIONS

The laparoscopic treatment of selected cases of enteric fistulas is safe. Although most good outcome trends favor the laparoscopic group, the study is inconclusive, because no statistical difference was demonstrated with regard to operative time, number of postoperative complications, readmission rate, and length of postoperative stay, most likely because of the small number of cases in each arm of the study. Study of a greater number of cases outside the learning curve of the laparoscopic surgeons would clarify this issue. Other outcomes, including cost, pain control, cosmesis, and return to activities of daily living, need to be included in the evaluation.

Technique for laparoscopic partial splenectomy

Splenic preservation and conservative management are now accepted norms when dealing with splenic pathologic conditions. This case report describes the technique of laparoscopic partial splenectomy for an undiagnosed splenic lesion. A thorough understanding of splenic anatomy permits laparoscopic partial splenectomy with the resultant benefits, including a decreased risk of postsplenectomy sepsis, short hospital stay, and superior cosmesis. The success and relative ease of performing this procedure will pave the way for its future use in other selective cases involving splenic pathology.

Determinants of outcomes in laparoscopic colorectal surgery: a multiple regression analysis of 416 resections

BACKGROUND

To date, most large series of laparoscopic colorectal procedures have been descriptive reports that do not account for the potentially complex interaction of outcome predictors. The purpose of this study was to identify the preoperative factors that predict operative time, conversion to open surgery, and intraoperative and postoperative complications in laparoscopic colorectal surgery.

METHODS

Multiple regression techniques were used to analyze 416 laparoscopic resections from a prospective database of laparoscopic colorectal procedures performed between April 1991 and April 1998. The preoperative factors considered were patient-specific (age, gender, weight) or disease-specific (diagnosis of cancer, Crohn's disease, diverticulitis, fistula). Surgical experience of < or =50 cases was also considered. Finally, all resections were represented by a combination of the following five procedure components: resections of the (a) hepatic flexure, (b) splenic flexure, (c) sigmoid, and (d) rectum, or (e) a perineal dissection.

RESULTS

Patient weight, Crohn's disease, and each of the five individual procedure components incrementally lengthened operative time. Conversion to open surgery was influenced by the patient's weight, malignancy, and early experience of the surgeon. The risk of a postoperative complication was increased by the patient's age, resection of the perineum, and the presence of a fistula. No factors significantly influenced the risk of an intraoperative complication.

CONCLUSIONS

Several preoperative factors that significantly affect outcomes in laparoscopic colorectal resections have been identified. Consideration of these factors may help in case selection and estimation of operating time; they should also be valuable when patients are informed of their risk of conversion and complications.

Laparoscopic splenectomy for hematologic malignancies

BACKGROUND

Patients with hematologic malignancy (HM) tend to have large spleens. The purpose of this study was to compare the outcomes of laparoscopic splenectomy for patients with HM to those with benign disease (BD).

METHODS

A review was conducted of a prospectively accumulated database of 64 consecutive, unselected laparoscopic splenectomies performed by two surgeons between March 1992 and August 1997.

RESULTS

Of 14 patients with HM (7 lymphoma, 6 leukemia, 1 myeloid metaplasia), three required conversion to open splenectomy (21%). In the remaining 11 patients, two had postoperation complications (18%), including one death from sepsis (9%). Of 50 patients with BD (36 idiopathic thrombocytopenic purpura [ITP], 5 spherocytosis, 4 hemolytic anemia, and 5 others), three were converted to open surgery (6%). Complications developed in 5 (11%) of the remaining 47 patients. No deaths occurred. All patients who had spleens larger than 27 cm in diameter required conversion. Patients undergoing laparoscopic splenectomy for HM were older (54 +/- 16 years vs. 36 +/- 18 years; p = 0.002), had larger spleens (median 17.0 cm vs. 11.0 cm; p < 0.001), and had lower preoperation hemoglobin levels (113 +/- 30 g/L vs. 132 +/- 23 g/L; p = 0.03) than patients with BD. The HM group required longer operation time (239 +/- 73 min vs. 180 +/- 61 min; p < 0.01), but showed no differences with respect to operation blood loss (median, 100 vs. 165 mL), requirement for transfusion (median, 0.0 vs. 0.0 units), and length of hospital stay (median 3.0 vs. 3.0 days).

CONCLUSIONS

Although patients with HM had larger spleens and required longer operation time for laparoscopic splenectomy, surgical outcomes were equivalent. The laparoscopic approach should be preferred, even for patients with HM. The only limitation appears to be splenic size greater than 27 cm.

Simplified laparoscopic approach to "second-look" laparotomy: a review

Acute mesenteric vascular accidents are being diagnosed more commonly as a consequence of an aging population and often result in emergency bowel resection for ischemia. Because predicting postoperative intestinal viability remains difficult, second-look laparotomy has been advocated to improve outcomes. Recently, laparoscopy has emerged as an alternative to laparotomy for the diagnosis and treatment of ongoing postoperative ischemia. A review of the literature since 1994 reveals that, to date, 19 procedures have been reported to prevent 13 (68%) unnecessary laparotomies. We describe our laparoscopic second- look technique and review the literature. Second-look laparoscopy has been shown repeatedly to be a safe alternative to laparotomy. It is simple and reduces negative second-look laparotomy in critically ill patients.

Technique for laparoscopic gastric surgery

As technology and surgeon experience expand, laparoscopic surgery is playing a larger role in the treatment of gastric conditions. We present our technical approach to various laparoscopic gastric resections and outline our preliminary results. Contrary to the majority of publications on laparoscopic gastric resection, we believe gastric mobilization should be carried out by incising the avascular plane between the greater omentum and transverse colon. This gives easy access to the origin of the left gastric artery and permits an acceptable D1 oncologic resection. For small lesions, tumor localization and resection margins should be mapped with the aid of routine intraoperative endoscopy. Nine patients underwent formal gastric resections, six of which were done for malignancy. Median time to discharge and length of follow-up were 4.5 days (range 3-10) and 25 months (range 24-35), respectively. One patient died postoperatively, and the remaining five patients operated for malignancy are alive and well with no evidence of recurrent disease or port site metastases.

Laparoscopic sigmoid resection for acute and chronic diverticulitis. An outcomes comparison with laparoscopic resection for nondiverticular disease

BACKGROUND

Sigmoid diverticulitis is a common benign condition; however, cases of acute and chronic diverticulitis may be difficult for the surgeon to treat. We designed a study to compare the outcomes of patients who undergo laparoscopic resections for sigmoid diverticulitis with those who have similar resections for other indications.

METHODS

From a prospectively accumulated database of 397 consecutive laparoscopic colorectal procedures performed by three surgeons, we reviewed the outcomes of 178 patients who underwent laparoscopic sigmoid resections with primary anastomosis.

RESULTS

Laparoscopic sigmoid colectomies or anterior resections were performed in 22 patients with acute diverticulitis (AD), 70 patients with chronic diverticulitis (CD), and 86 patients with nondiverticular disease (ND). Patients with ND were significantly older than those with AD or CD (67 +/- 14 year versus 55 +/- 13 year, 55 +/- 12 year, p < 0.05). Conversion to open surgery was required in three AD patients (14%), three CD patients (4%), and 17 ND patients (20%) (chi2 = 8.23, p = 0.016). In cases completed laparoscopically, there was no significant difference in median operative time (AD, 165 min; CD, 150 min; ND, 165 min), proportion of patients with intraoperative complications (AD, one; CD, six; ND, one), or postoperative complications (AD, four; CD, 13; ND, 11). The occurrence of a postoperative complication significantly prolonged median time to full diet (4 days vs 3 days, p < 0.001) and discharge (9 days vs 5 days, p < 0.001) but not return to normal activity (16 days vs 15 days).

CONCLUSIONS

In this study, patients who underwent laparoscopic sigmoid colectomies and anterior resections had similar outcomes regardless of diagnosis. This finding substantiates our view that laparoscopic resections for diverticulitis can be performed safely and with the same benefits as resections for other indications.

Laparoscopic resection does not adversely affect early survival curves in patients undergoing surgery for colorectal adenocarcinoma

OBJECTIVE

To determine the survival curves for laparoscopic resection (LR) of colorectal cancer.

SUMMARY BACKGROUND DATA

Laparoscopic resection for cure of colorectal cancer is controversial, and survival curves have not been determined.

METHODS

A prospective database of 177 consecutive LRs of colorectal cancers performed between November 1991 and 1997 was reviewed. The TNM classification (stage 0, I, II, III, and IV) for colorectal cancers and the Kaplan-Meier method were used to determine survival curves.

RESULTS

Of the 177 patients, 5 were excluded for not having adenocarcinomas. Twenty-five patients (14.5%) had conversion to open surgery; most of these patients had rectal cancer or tumor invasion to adjacent organs. Twelve patients were lost to follow-up. All 135 remaining patients had follow-up. Overall, 28 deaths occurred during the follow-up period, 15 of which were cancer-related. The median follow-up was 24 months for patients with stage I, II, and III disease and 9 months for patients with stage IV disease. Observed 2-year survival rates were 100% stage I, 88.7% stage II, 80.6% stage III, and 28.6% stage IV. Survival rates at 4 years were 100% stage I, 79.5% stage II, 53.7% stage III, and 0% stage IV. No trocar site recurrence was observed.

CONCLUSIONS

Early survival curves for patients with colorectal cancer who underwent LR do not differ negatively from historical controls for conventional surgery. Further validation is needed.

Correcting reflux laparoscopically

Most operations in the abdominal cavity and chest can be performed using minimally invasive techniques. As yet it has not been determined which laparoscopic procedures are preferable to the same operations done through conventional laparotomy. However, most surgeons who have completed the learning curves of these procedures believe that most minimally invasive techniques will be scientifically recognized soon. The evolution, validation and justification of advanced laparoscopic surgical methods seem inevitable. Most believe that the trend towards procedures that minimize or eliminate the trauma of surgery while adhering to accepted surgical principles is irreversible. The functional results of laparoscopic antireflux surgery in the seven years since its inception have been virtually identical to the success curves generated with open fundoplication in past years. Furthermore, overall patient outcomes with laparoscopic procedures have been superior to outcomes with the traditional approach. Success is determined by patient selection and operative technique. Patient evaluation should include esophagogastroduodenoscopy, barium swallow, 24 h pH study and esophageal motility study. Gastric emptying also should be evaluated. Patients who have abnormal propulsion in the esophagus should not receive a complete fundoplication (Nissen) because it adds a factor of obstruction. Dor or Toupet procedures are adequate alternatives. Prokinetic agents, dilation or pyloroplasty are used for pyloric obstruction ranging from little to more severe. Correcting reflux laparoscopically is more difficult in patients with obesity, peptic strictures, paraesophageal hernias, short esophagus, or a history of previous upper abdominal or antireflux surgery.

Splenic artery embolization before laparoscopic splenectomy. An update

BACKGROUND

This study assessed preoperative splenic artery embolization before laparoscopic splenectomy.

METHODS

Preoperative splenic artery embolization was used in 26 of 54 patients (48%) undergoing laparoscopic splenectomy. Between 1992 and 1994, this procedure was used in all patients with spleens shorter than 20 cm (group I), except the first two (18/20). An anterior surgical approach was used. After 1994 (group II), embolization was not used for these patients (0/26), and a lateral surgical approach was used. Throughout the study period, all patients with spleens longer than 20 cm had embolization (8/8).

RESULTS

Five complications occurred, three related to the use of small-particle embolic material (microspheres, gelatin foam powder). In group I, the conversion rate was lower than that of most current series, largely because of embolization. In group II, similar results were obtained because of experience and a better surgical approach (i.e., lateral).

CONCLUSIONS

Preoperative splenic artery embolization is not necessary for spleens shorter than 20 cm. Increased experience and mostly the lateral surgical approach have permitted a shorter operation and a low conversion rate (4%) similar to the rate achieved with embolization and the anterior approach in the initial stages of the study. Embolization is used for 20- to 30-cm spleens. The conversion rate is higher (17%), and blood replacement is required frequently (83%). Despite embolization, laparoscopic splenectomy for spleens longer than 30 cm is futile at this time (100% conversion).

Surgery for peptic strictures

Benign peptic stricture of the esophagus is a complex disorder which results from persistent gastroesophageal reflux. Its successful management depends on an accurate preoperative evaluation of the stricture and the patient. Surgical management of peptic strictures can be quite effective in relieving the symptoms and halting the pathologic gastroesophageal reflux that accompanies this disorder. This article reviews the general principles of evaluation and surgical treatment of benign peptic esophageal strictures.