Chung Ngai Tang

Prospective randomized comparative study of single incision laparoscopic cholecystectomy versus conventional four-port laparoscopic cholecystectomy

BACKGROUND This study aimed to compare the outcomes of single-incision laparoscopic cholecystectomy (SILC) versus conventional 4-port laparoscopic cholecystectomy (LC). METHODS From November 2009 to August 2010, 51 patients with symptomatic gallstone or gallbladder polyps were randomized to SILC (n = 24) or 4-port LC (n = 27). RESULTS Mean surgical time (43.5 vs 46.5 min), median blood loss (1 vs 1 mL) and mean hospital stay (1.5 vs 1.8 d) were similar for both the SILC and 4-port LC group. There were no open conversions and no major complications. The mean total wound length of the SILC group was significantly shorter (1.76 vs 2.25 cm). The median visual analogue pain score at 6 hours after surgery was similar (4.5 vs 4.0) but the SILC group had a significantly worse pain score on day 7 (1 vs 0). There was no difference in time to resume usual activity (mean, 5.6 vs 5.0 d). The median cosmetic score of SILC was significantly higher than at 3 months after surgery (7 vs 6). CONCLUSIONS SILC was feasible and safe for properly selected patients in experienced hands.

Robot-assisted laparoscopic pancreaticoduodenectomy versus open pancreaticoduodenectomy – A comparative study

BACKGROUND Traditionally, pancreatic surgery is considered as one of the most complex surgeries. The recently developed robotic technology allows surgeons to perform pancreaticoduodenectomy. A comparative study was undertaken to study outcomes between robotic approach and open approach. METHODS A consecutive patients underwent pancreaticoduodenectomy (robotic approach, n=20; open approach=67) between January 2000 and February 2012 at a single institution were analyzed. RESULTS The robotic group had a significantly longer operative time (mean, 491.5 vs. 264.9 min), reduced blood loss (mean, 247 vs. 774.8 ml), and shorter hospital stay (mean, 13.7 vs. 25.8 days) compared to the open group. Open conversion rate was 5%. There was no significant difference between the two groups in terms of overall complication rates, mortality rates, R0 resection rate and harvested lymph node numbers. CONCLUSIONS This study showed that robot-assisted laparoscopic pancreaticoduodenectomy was safe and feasible in appropriately selected patients. However, it is too early to draw definitive conclusions about the value of robot-assisted laparoscopic pancreaticoduodenectomy. In light of remaining uncertainties regarding short-term and long-term outcome, caution should be exercised in the assessment of the appropriateness of this operation for individual patient.

Laparoscopic Liver Resection for Hepatocellular Carcinoma: Ten-Year Experience in a Single Center

HYPOTHESIS Laparoscopic hepatectomy and open hepatectomy for hepatocellular carcinoma (HCC) have the same surgical outcome. DESIGN Nonrandomized comparative study. SETTING Tertiary referral center. PATIENTS Twenty-five consecutive patients with HCC undergoing laparoscopic hepatectomy from January 1, 1998, through December 31, 2007, and a retrospective control group of 33 patients who underwent open hepatectomy for HCC during the same period. The 2 groups were matched in terms of demographic data, tumor size, and severity of cirrhosis. INTERVENTIONS Laparoscopic hepatectomy. MAIN OUTCOME MEASURES Surgical morbidity rate, mortality rate, and survival. RESULTS One patient in the laparoscopic group underwent conversion to an open approach. The median operating time and blood loss were 150 minutes and 200 mL, respectively. The resections were R0 in 22 patients (88%) and R1 in 3 (12%). The hospital mortality and morbidity rates were 0% and 16% (4 patients), respectively. The 3-year overall and disease-free survival rates were 60% and 52%, respectively. There was no difference in surgical morbidity rate, hospital mortality rate, and midterm survival results between the 2 groups. The laparoscopic approach resulted in a shorter hospital stay. CONCLUSIONS Laparoscopic hepatectomy for HCC is feasible and safe in selected patients. Midterm survival is also favorable. The laparoscopic approach has the benefit of a shorter hospital stay. However, the procedure should be performed by a surgical team expert in hepatobiliary and laparoscopic surgery in properly selected patients.

Randomized controlled trial comparing epinephrine injection plus heat probe coagulation versus epinephrine injection plus argon plasma coagulation for bleeding peptic ulcers

BACKGROUND Epinephrine injection with heat probe coagulation is an effective treatment for bleeding peptic ulcer. Few studies have investigated the efficacy of dual therapy with epinephrine injection plus either heat probe or argon plasma coagulation for high-risk bleeding peptic ulcers. This study compared epinephrine injection plus heat probe coagulation to epinephrine injection plus argon plasma coagulation for the treatment of high-risk bleeding peptic ulcers. METHODS The study design was prospective, randomized, and controlled. Patients with actively bleeding peptic ulcers, ulcers with adherent clots, or ulcers with nonbleeding visible vessels were randomly assigned to epinephrine injection plus heat probe coagulation or epinephrine injection plus argon plasma coagulation. Patients with previous gastric surgery, malignant ulcers, and unidentifiable ulcers because of torrential bleeding were excluded. The primary outcome measure was recurrence of bleeding. Secondary outcome measures were initial hemostasis, endoscopic procedure duration, number of patients requiring surgery, mortality within 30 days, and ulcer status at 8 week follow-up endoscopy. RESULTS One hundred ninety-two patients were enrolled; 7 with malignant ulcers were excluded after randomization. One hundred eighty-five cases were analyzed, 97 in the heat probe group and 88 in the argon plasma coagulation group. Patient demographics and ulcer characteristics were comparable between the groups. There was no significant difference in terms of initial hemostasis (95.9% vs. 97.7%), frequency of recurrent bleeding (21.6% vs. 17.0%), requirement for emergency surgery (9.3% vs. 4.5%), mean number of units of blood transfused (2.4 vs. 1.7 units), mean hospital stay (8.2 vs. 7.0 days), and hospital mortality (6.2% vs. 5.7%). Sixty (61.8%) patients in the heat probe group and 52 (52.9%) in the argon plasma coagulation group underwent endoscopy at 8 weeks. There was no significant difference between these groups in the relative frequency of nonhealing ulcer at 8 weeks. CONCLUSION Epinephrine injection plus argon plasma coagulation is as safe and effective as epinephrine injection plus heat probe coagulation in the treatment of patients with high-risk bleeding peptic ulcers.

Robot-assisted laparoscopic liver resection for hepatocellular carcinoma: short-term outcome.

BACKGROUND This study aimed at analyzing the perioperative and early survival outcomes of robotic liver resection of hepatocellular carcinoma (HCC). METHODS The study population included a consecutive series of patients with HCC who underwent robotic liver resection at a single center. RESULTS During the study period, 41 consecutive patients with HCC underwent 42 robotic liver resections. Five resections (11.9%) were carried out for recurrent HCC, and 23.8% (n = 10) were hemihepatectomy procedures. The mean operating time and blood loss was 229.4 minutes and 412.6 mL, respectively. The R0 resection rate was 93%. The hospital mortality and morbidity rates were 0% and 7.1%, respectively. The mean hospital stay was 6.2 days. The 2-year overall and disease-free survival rates were 94% and 74%, respectively. In the subgroup analysis of minor liver resection, when compared with the conventional laparoscopic approach, the robotic group had similar blood loss (mean, 373.4 mL vs 347.7 mL), morbidity rate (3% vs 9%), mortality rate (0% vs 0%), and R0 resection rate (90.9% vs 90.9%). However, the robotic group had a significantly longer operative time (202.7 mins vs 133.4 mins). CONCLUSIONS This study demonstrated the feasibility and safety of robotic surgery for HCC, with favorable short-term outcome. However, the long-term oncologic results remain uncertain.

Multimodality laparoscopic liver resection for hepatic malignancy – From conventional total laparoscopic approach to robot-assisted laparoscopic approach

INTRODUCTION Laparoscopic liver resection can either be total laparoscopic or hand-assisted laparoscopic approach. The recent introduction of robotic surgical systems has revolutionized the field of minimally invasive surgery. It was developed to overcome the disadvantages of conventional laparoscopic surgery. The role of robotic system in laparoscopic surgery was not well evaluated yet. The aim of this cohort study was to evaluate the outcome of multimodality approach of laparoscopic liver resection for hepatic malignancy METHODS From January 1998 to August 2010, all patients with hepatic malignancy underwent laparoscopic liver resection were included. A prospectively collected data was analyzed retrospectively. RESULTS During the study period, a total of 56 patients with hepatic malignancies (hepatocellular carcinoma, HCC, n = 42; colorectal liver metastases, CLM, n = 14) underwent laparoscopic liver resection in our surgical unit. The majority of cases were performed by hand-assisted laparoscopic approach, n = 31 (55.3%) and the remainder were with total laparoscopic approach, n = 10 (17.9%) and robot-assisted laparoscopic approach, n = 15 (26.8%). The median operation time was 150 min (range, 75-307 min). The median blood loss during surgery was 175 ml (range, 5-2000 ml). Two patients (3.6%) needed open conversion and one patient (1.8%) needed to be converted to hand-assisted laparoscopic approach. The morbidity rate was 14.3%. There was no procedure-related death. 89.3% of patients had R0 resection and 10.7% of patients had R1 resection. The median hospital stay was 6.5 days (range, 2-13 days). The 1-year, 3-year, and 5-year disease-free survival rates for HCC were 85%, 47%, and 38%, respectively. The 1-year, 3-year, and 5-year overall survival rates for HCC were 96%, 67%, and 52%, respectively. The 1-year, and 3-year disease-free survival rates for CLM were 92% and 72%. The 1-year, and 3-year overall survival rates for CLM were 100% and 88%, respectively. CONCLUSIONS Multimodality approach of laparoscopic liver resection of hepatic malignancy was feasible, and safe in selected patients. It was associated with a low complications rate. The mid-term and long-term survival outcome was favorable also.

Current status of robot-assisted laparoscopic pancreaticoduodenectomy and distal pancreatectomy: a comprehensive review.

This article reviews the current status of robot‐assisted laparoscopic pancreaticoduodenectomy and distal pancreatectomy.

Radiofrequency ablation versus hepatic resection for hepatocellular carcinoma within the Milan criteria – A comparative study

BACKGROUND To compare the results of radiofrequency ablation (RFA) with hepatic resection in the treatment of hepatocellular carcinoma (HCC) within the Milan criteria. METHODS A nonrandomized comparative study was performed with 111 consecutive patients who underwent laparoscopic RFA (n = 31) or curative hepatic resection (n = 80) for HCC within Milan criteria. RESULTS Procedure related complications were less often and severe after RFA than resection (3.2% vs. 25%). There was no significant difference in hospital mortality (0% vs. 3.8%). Hospital stay was significantly shorter in the RFA group than in the resection group (mean, 3.8 vs. 6.8 days). The 1-, 3-, and 5-year disease-free survival rates for the RFA group and the resection group were 76%, 40%, 40% and 76%, 60%, 60%, respectively. Disease-free survival was significantly lower in the RFA group than in the resection group. The corresponding 1-, 3-, and 5-year overall survival rates for the RFA group and the resection group were 100%, 92%, 84%, and 92%, 75%, 71%, respectively. The overall survival for RFA and resection were not significantly different. CONCLUSIONS Our result showed comparable overall survival between RFA and surgery, although RFA was associated with a significantly higher tumor recurrence rate. RFA had the advantages over surgical resection in being less invasive and having lower morbidity.

Managing concomitant gallbladder stones and common bile duct stones in the laparoscopic era: a systematic review.

Background: There is still no consensus on the ideal management of common bile duct (CBD) stones. This article aims to review the management of concomitant gallbladder stones and CBD stones in the laparoscopic era.

Laparoscopic Management of Omental Torsion Secondary to an Occult Inguinal Hernia

Torsion of the greater omentum is an uncommon surgical emergency. Most of the reported cases have been primary omental torsion with infarction, in which the underlying cause is largely unknown. Right-sided abdominal symptoms are the predominant complaint. Left-sided omental torsion is rather infrequent, and the preoperative diagnosis is extremely difficult. We report a case of omental torsion secondary to an occult left indirect inguinal hernia that was successfully diagnosed and managed laparoscopically.