World review of laparoscopic liver resection-2,804 patients

Novel 3-D laparoscopic magnetic ultrasound image guidance for lesion targeting

OBJECTIVES

Accurate laparoscopic liver lesion targeting for biopsy or ablation depends on the ability to merge laparoscopic and ultrasound images with proprioceptive instrument positioning, a skill that can be acquired only through extensive experience. The aim of this study was to determine whether using magnetic positional tracking to provide three-dimensional, real-time guidance improves accuracy during laparoscopic needle placement.

METHODS

Magnetic sensors were embedded into a needle and laparoscopic ultrasound transducer. These sensors interrupted the magnetic fields produced by an electromagnetic field generator, allowing for real-time, 3-D guidance on a stereoscopic monitor. Targets measuring 5 mm were embedded 3-5 cm deep in agar and placed inside a laparoscopic trainer box. Two novices (a college student and an intern) and two experts (hepatopancreatobiliary surgeons) targeted the lesions out of the ultrasound plane using either traditional or 3-D guidance.

RESULTS

Each subject targeted 22 lesions, 11 with traditional and 11 with the novel guidance (n= 88). Hit rates of 32% (14/44) and 100% (44/44) were observed with the traditional approach and the 3-D magnetic guidance approach, respectively. The novices were essentially unable to hit the targets using the traditional approach, but did not miss using the novel system. The hit rate of experts improved from 59% (13/22) to 100% (22/22) (P < 0.0001).

CONCLUSIONS

The novel magnetic 3-D laparoscopic ultrasound guidance results in perfect targeting of 5-mm lesions, even by surgical novices.

Minimally invasive sequential treatment of synchronous colorectal liver metastases by laparoscopic colectomy and robotic right hepatectomy

PURPOSE

The ideal timing for patients with colorectal cancer to undergo surgery for resectable synchronous liver metastases remains under debate. We describe a new sequential approach using laparoscopic/robotic surgery for the treatment of synchronous liver metastases.

METHODS

A 73-year-old man presented with sigmoid cancer and a single 8-cm right liver metastasis. A staged sequential minimally invasive approach was planned. A laparoscopic left colectomy was performed first, followed by a robotic right hepatectomy 10 days later.

RESULTS

The left colectomy lasted 120 min with a negligible blood loss (<10 mL). The right hepatectomy was completed robotically with an operating time of 330 min and intraoperative blood loss of 300 mL. The postoperative course was uneventful and the patient was discharged at postoperative day 8 of the liver resection. Three weeks later, the patient received adjuvant chemotherapy. At 26-months follow up, the patient was alive without recurrence.

CONCLUSIONS

This report suggests the technical feasibility and safety of a sequential totally minimally invasive approach for synchronous colorectal liver metastases. In selected patients, this approach can avoid the risk of a synchronous associate major liver/colonic resection using the advantages of minimally invasive surgery.

Resection margin in laparoscopic hepatectomy: a comparative study between wedge resection and anatomic left lateral sectionectomy

BACKGROUND

Experience from open hepatectomy shows that anatomic liver resection achieves a better resection margin than wedge resection. In recent years, laparoscopic hepatectomy has increasingly been performed in patients with liver pathology including malignant lesions. Wedge resection (WR) and left lateral sectionectomy (LLS), which also represent non-anatomic and anatomic resection respectively, are the two most common types of laparoscopic hepatectomy performed. The aim of the present study was to compare the two types of laparoscopic hepatectomy with emphasis on resection margin.

METHODS

Between November 2003 and July 2009, 44 consecutive patients who underwent laparoscopic hepatectomy were identified and retrospectively reviewed. The WR and LLS group of patients were compared in terms of operative outcomes, pathological findings, recurrence patterns and survival.

RESULTS

Out of the 44 patients, 21 underwent LLS and 23 a WR. The two groups of patients were comparable in demographics. The two groups did not differ in conversion rate, blood loss, blood transfusion, mortality, morbidity and post-operative length of stay. The LLS group patients had significantly larger liver lesions, wider resection margin and less sub-centimetre margins. In patients with malignant liver lesions, there was no difference between the two groups in incidence of intra-hepatic recurrence and 3-year overall and disease-free survival.

CONCLUSION

Operative outcomes are similar between laparoscopic WR and LLS. However, WR is less reliable than LLS in achieving a resection margin of more than 1 cm. Larger studies involving more patients with longer follow-up are warranted to determine the impact of the resection margin on intra-hepatic recurrence and survival.

Laparoscopic liver resection--current update

An increasing number of studies are reporting the outcomes and benefits of laparoscopic liver resection. This article reviews the literature with emphasis on a recent consensus conference on laparoscopic liver resection in 2008, the learning curve for laparoscopic liver surgery, laparoscopic major hepatectomies, oncologic outcomes of laparoscopic liver resection for hepatocellular carcinoma and colorectal cancer liver metastases, and the comparative benefits of laparoscopic versus open liver resection. Current evidence suggests that minimally invasive hepatic resection is safe and feasible with short-term benefits, no economic disadvantage, and no compromise to oncologic principles.

Advances in cancer surgery: natural orifice surgery (NOTES) for oncological diseases

Natural orifice transluminal endoscopic surgery (NOTES) is a new concept that attempts to reduce the impact of surgery on the patient. In surgical oncology several studies have already revealed that a minimally invasive approach provides at least the same, if not a better, long-term outcome. One could hypothesize that a less invasive approach such as NOTES could further enhance such advantages. Since its initial description, NOTES has become clinical reality and today nearly every organ is accessible by a transluminal approach, in at least the experimental setting. Subsequent to published research, first clinical studies on NOTES in oncology were reported and the accuracy of transgastric peritoneoscopy for staging of pancreas cancer was shown to be similar to laparoscopy in humans. A NOTES gastro-jejunostomy via transgastric access has also been proposed to decrease invasiveness of palliative treatment of duodenal, biliary and pancreatic cancers. Colorectal cancer resection via transanal access would offer a clear-cut patient advantage over laparoscopic and would not be subject to the frequent criticism of violating an innocent second organ, as the colon or rectum is always breached in a colectomy. Natural orifice endoluminal therapies, such as endoscopic submucosal dissection, already have been clinically applied for several years. Improved techniques or instruments evolving from NOTES technology might enhance its widespread use for the treatment of early malignancies and thereby again will provide a tremendous benefit for the patient. Although still somewhat controversial, the subject of natural orifice surgery in oncological disease indicates that current laboratory efforts to introduce NOTES into cancer surgery could be ready for cautious clinical investigations. The final determination of patient benefit will need well-constructed prospective study.

[Surgical oncology of hepatocellular carcinoma (HCC)]

Incidence of hepatocellular carcinoma (HCC) increases worldwide. 600 new cases may occur in Hungary yearly, but statistical data show much fewer patients seen in hepatological care units. Despite of new drug sorafenib or ablative techniques, surgical methods remain the most effective treatment of HCC. Results of orthotropic liver transplantation (OTLX) in selected HCC cases have been becoming promising lately. Hungarian transplant capacity and HCC stadium levels in the majority of diagnosed cases exclude OTLX for all patients. Surgical resection is determined by the functional liver remnant (FLR). Cirrhotic patients tolerate left lateral segmentectomy. Tumors of the right lobe after occlusion of right main portal branch - if left lobe regeneration is satisfying - might be resected even in cirrhotic liver. Intra-operative preconditioning significantly diminishes serum levels of ischemia-reperfusion markers and operative risk. At the First Department of Surgery of Semmelweis University, 2167 liver tumors were operated between 1996 and 2009, including 254 HCC cases. Radical resection was performed in 211 (82.7% resection rate). Laparoscopic liver resection is becoming popular all over the world, representing less surgical injury compared to open procedure. Indication of minimal invasive liver resection is therefore specifically important in cirrhotic patients.

Laparoscopic vs open left hepatectomy for hepatolithiasis

AIM

To explore the feasibility and therapeutic effect of total laparoscopic left hepatectomy (LLH) for hepatolithiasis.

METHODS

From June 2006 to October 2009, 61 consecutive patients with hepatolithiasis who met the inclusion criteria for LLH were treated in our institute. Of the 61 patients with hepatolithiasis, 28 underwent LLH (LLH group) and 33 underwent open left hepatectomy (OLH group). Clinical data including operation time, intraoperative blood loss, postoperative complication rate, postoperative hospital stay time, stone clearance and recurrence rate were retrospectively analyzed and compared between the two groups.

RESULTS

LLH was successfully performed in 28 patients. The operation time of LLH group was longer than that of OLH group (158 +/- 43 min vs 132 +/- 39 min, P < 0.05) and the hospital stay time of LLH group was shorter than that of OLH group (6.8 +/- 2.8 d vs 10.2 +/- 3.4 d, P < 0.01). No difference was found in intraoperative blood loss (180 +/- 56 mL vs 184 +/- 50 mL), postoperative complication rate (14.2% vs 15.2%), and stone residual rate (intermediate rate 17.9% vs 12.1% and final rate 0% vs 0%) between the two groups. No perioperative death occurred in either group. Fifty-seven patients (93.4%) were followed up for 2-40 mo (mean 17 mo), including 27 in LLH group and 30 in OLH group. Stone recurrence occurred in 1 patient of each group.

CONCLUSION

LLH for hepatolithiasis is feasible and safe in selected patients with an equal therapeutic effect to that of traditional open hepatectomy.

An update on indications for treatment of solid hepatic neoplasms in noncirrhotic liver

During recent years, we have experienced an increased detection of previously unsuspected liver masses in otherwise asymptomatic patients owing to the widespread application of imaging techniques. Regardless of the malignant or cystic tissues, a remarkable percentage of these masses are represented by benign solid neoplasms. Treatment of benign liver tumors still represents a major concern in the hepatic surgery field. Indications for surgery have remained unchanged for many years, but the laparoscopic approach could determine in some cases a broadening of indications, which may result in overtreatment. In this article, the main surgical indication for hepatic hemangioma, focal nodular hyperplasia and hepatocellular adenoma are discussed with regard to the most recent advancements in literature. In addition, a separate section deals with the role of laparoscopy in the treatment of benign liver neoplasms.

Video. Single-incision laparoscopic left lateral segmentectomy of colorectal liver metastasis

Laparoscopic surgery via a single port is an evolving technique being applied to an increasing variety of operations [1]. Multiple series over the past 3 years have shown single-incision laparoscopic cholecystectomy to be feasible and safe [2]. The ergonomic difficulties of single-port laparoscopy include a loss of instrument triangulation and operation with camera and instruments in parallel. Many different modifications of techniques and equipment have been used to compensate. Single-port techniques have been applied by a few authors to laparoscopic nephrectomy [3], splenectomy [4], and obesity surgery [5, 6]. Laparoscopic liver resection is well established and shown to be safe in multiple series [7]. The laparoscopic approach is accepted as the gold standard for resection of segments 2 and 3 [8]. To the authors' knowledge, no reports of laparoscopic liver resection via a single port have been published. They report the use of their technique for single-incision laparoscopic left lateral segmentectomy in a patient with a solitary segment 2 colorectal liver metastasis. The authors maintained strict oncologic principles and adhered to their standard laparoscopic technique as far as possible. They used a TriPort (Advanced Surgical Concepts, Wicklow, Ireland) placed via a 12-mm incision at the umbilicus. Following diagnostic laparoscopy and intraoperative liver ultrasound, hepatic attachments were divided using electrocautery. Parenchymal transection and vascular control were achieved using an ultrasonic dissector and laparoscopic staplers. Standard straight laparoscopic instruments were used. A number of technical challenges were apparent. Movement of instruments was jerky at times, either because instruments were clashing with one another other or deflecting the camera. The multiport device can be stiff, requiring copious lubrication throughout surgery. Crossing hands facilitates internal triangulation of the operating instruments to allow retraction or to apply tension, for example, during the division of hepatic attachments. Control of minor hemorrhage is possible with judicious and patient application of pressure using small pieces of surgical gauze. An articulating laparoscopic stapler is useful to achieve the ideal angle of staple deployment during transection of vascular pedicles. The specimen was extracted by extending the umbilical incision. No complications occurred. The patient was able to resume an oral diet and full mobility free of opioid analgesia on the first postoperative day. The resection margin was clear. This video demonstrates that the authors' technique is feasible and oncologically safe for selected patients requiring liver resection.

Laparoscopic vs open left hepatectomy for hepatolithiasis

AIM: To explore the feasibility and therapeutic effect of total laparoscopic left hepatectomy (LLH) for hepatolithiasis.

METHODS: From June 2006 to October 2009, 61 consecutive patients with hepatolithiasis who met the inclusion criteria for LLH were treated in our institute. Of the 61 patients with hepatolithiasis, 28 underwent LLH (LLH group) and 33 underwent open left hepatectomy (OLH group). Clinical data including operation time, intraoperative blood loss, postoperative complication rate, postoperative hospital stay time, stone clearance and recurrence rate were retrospectively analyzed and compared between the two groups.

RESULTS: LLH was successfully performed in 28 patients. The operation time of LLH group was longer than that of OLH group (158 ± 43 min vs 132 ± 39 min, P < 0.05) and the hospital stay time of LLH group was shorter than that of OLH group (6.8 ± 2.8 d vs 10.2 ± 3.4 d, P < 0.01). No difference was found in intraoperative blood loss (180 ± 56 mL vs 184 ± 50 mL), postoperative complication rate (14.2% vs 15.2%), and stone residual rate (intermediate rate 17.9% vs 12.1% and final rate 0% vs 0%) between the two groups. No perioperative death occurred in either group. Fifty-seven patients (93.4%) were followed up for 2-40 mo (mean 17 mo), including 27 in LLH group and 30 in OLH group. Stone recurrence occurred in 1 patient of each group.

CONCLUSION: LLH for hepatolithiasis is feasible and safe in selected patients with an equal therapeutic effect to that of traditional open hepatectomy.

Robotic liver surgery: results for 70 resections

BACKGROUND

Robotic surgery is gaining popularity for digestive surgery; however, its use for liver surgery is reported scarcely. This article reviews a surgeon's experience with the use of robotic surgery for liver resections.

METHODS

From March 2002 to March 2009, 70 robotic liver resections were performed at 2 different centers by a single surgeon. The surgical procedure and postoperative outcome data were reviewed retrospectively.

RESULTS

Malignant tumors were indications for resections in 42 (60%) patients, whereas benign tumors were indications in 28 (40%) patients. The median age was 60 years (range, 21-84) and 57% of patients were female. Major liver resections (≥ 3 liver segments) were performed in 27 (38.5%) patients. There were 4 conversions to open surgery (5.7%). The median operative time for a major resection was 313 min (range, 220-480) and 198 min (range, 90-459) for minor resection. The median blood loss was 150 mL (range, 20-1,800) for minor resection and 300 mL (range, 100-2,000) for major resection. The mortality rate was 0%, and the overall rate of complications was 21%. Major morbidity occurred in 4 patients in the major hepatectomies group (14.8%) and in 4 patients in the minor hepatectomies group (9.3%). All complications were managed conservatively and none required reoperation.

CONCLUSION

This preliminary experience shows that robotic surgery can be used safely for liver resections with a limited conversion rate, blood loss, and postoperative morbidity. Robotics offers a new technical option for minimally invasive liver surgery.

Current approach to hepatocellular carcinoma

Hepatocellular carcinoma (HCC) accounts for 80% of all primary liver cancers and ranks globally as the fourth leading cause of cancer-related death. Partial hepatectomy remains the best treatment option for select patients with HCC without cirrhosis. Liver transplantation is well established as the gold standard for patients with HCC and cirrhosis in the absence of extrahepatic spread and macrovascular invasion. Local regional therapy is indicated in select patients who are not surgical candidates, and its role as adjuvant therapy remains to be clarified by prospective studies.

Safety of robotic general surgery in elderly patients

As the life expectancy of people in Western countries continues to rise, so too does the number of elderly patients. In parallel, robotic surgery continues to gain increasing acceptance, allowing for more complex operations to be performed by minimally invasive approach and extending indications for surgery to this population. The aim of this study is to assess the safety of robotic general surgery in patients 70 years and older. From April 2007 to December 2009, patients 70 years and older, who underwent various robotic procedures at our institution, were stratified into three categories of surgical complexity (low, intermediate, and high). There were 73 patients, including 39 women (53.4%) and 34 men (46.6%). The median age was 75 years (range 70-88 years). There were 7, 24, and 42 patients included, respectively, in the low, intermediate, and high surgical complexity categories. Approximately 50% of patients underwent hepatic and pancreatic resections. There was no statistically significant difference between the three groups in terms of morbidity, mortality, readmission or transfusion. Mean overall operative time was 254 ± 133 min (range 15-560 min). Perioperative mortality and morbidity was 1.4% and 15.1%, respectively. Transfusion rate was 9.6%, and median length of stay was 6 days (range 0-30 days). Robotic surgery can be performed safely in the elderly population with low mortality, acceptable morbidity, and short hospital stay. Age should not be considered as a contraindication to robotic surgery even for advanced procedures.

Laparoscopic hepatectomy for hepatocellular carcinoma: a European experience

BACKGROUND

Some series have suggested that laparoscopy is beneficial for resection of hepatocellular carcinoma. This has to be confirmed in larger series. The aim of this study was to analyze the results of 3 European surgical centers on laparoscopic liver resections for hepatocellular carcinoma.

STUDY DESIGN

Prospective databases of 3 European centers involved in the development of laparoscopic liver surgery were combined. Between 1998 and 2008, 163 liver resections for hepatocellular carcinoma were performed. Liver parenchyma was cirrhotic in 120 (73.6%) patients. Liver resection was anatomic in 107 (65.6%) patients and was a major resection (>or=3 segments) in 16 (9.8%). A totally laparoscopic approach was used in 155 (95.1%) patients.

RESULTS

Median surgical duration was 180 minutes. Median operative blood loss was 250 mL, and 16 (9.8%) patients received blood transfusion. Conversion to open surgery was required in 15 (9.2%) patients. Median tumor size was 3.6 cm and median surgical margin was 12 mm. Liver-specific and general complications occurred in 19 (11.6%) and 17 (10.4%) patients, respectively. Hospital length of stay was 7 days. A further analysis of early (n = 75) and recent (n = 88) experiences showed improved results in the latter group. Overall and recurrence-free survival rates at 1, 3, and 5 years were 92.6%, 68.7%, 64.9%, and 77.5%, 47.1%, 32.2%, respectively.

CONCLUSIONS

This study demonstrates that laparoscopic resection for hepatocellular carcinoma is feasible in selected patients, with good operative and oncologic results. Laparoscopy should be routinely considered in centers experienced in liver surgery and advanced laparoscopy.

Laparoscopic right hemihepatectomy for hepatocellular carcinoma

BACKGROUND

Although laparoscopic liver resection has been widely adopted, laparoscopic right hepatectomy remains a challenging procedure. This video shows the relevant technical maneuvers in each step of a total laparoscopic right hepatectomy.

PATIENTS AND METHODS

A 47-year-old man was admitted for evaluation of an incidental hepatic mass noted on a health screening test. Two months ago, transarterical chemoembolization was performed for a 3.5-cm hepatocellular carcinoma (HCC), which was located in S7-8; a follow-up abdominal computed tomography (CT) revealed incomplete necrosis of the HCC. The laboratory studies were positive for hepatitis B viral markers and a normal level of alpha-fetoprotein level. The preoperative liver function was Child-Pugh class A. A laparoscopic right hemihepatectomy was performed for this lesion. An anatomic resection of the right liver was possible with selective control of a Glissonian pedicle to the right liver.

RESULTS

The operating time was 305 min. The estimated intraoperative blood loss was approximately 300 ml; an intraoperative transfusion was not necessary. The postoperative pathology confirmed a 3.5 x 2.8 x 2.7 cm HCC with safe margins. The patient was discharged on the 9th postoperative day without any postoperative complications.

CONCLUSION

A laparoscopic right hepatectomy is feasible for patients with HCC, although the operative technique is still demanding.

Comparing the clinical and economic impact of laparoscopic versus open liver resection

BACKGROUND

Laparoscopic liver resection has thus far not gained widespread acceptance among liver surgeons. Valid questions remain regarding the relative clinical superiority of the laparoscopic approach as well as whether laparoscopic hepatectomy carries any economic benefit compared with open liver surgery.

OBJECTIVE

The aim of this work is to compare the clinical and economic impact of laparoscopic versus open left lateral sectionectomy (LLS).

METHODS

Between May 2002 and July 2008, 44 laparoscopic LLS and 29 open LLS were included in the analysis. Deviation-based cost modeling (DBCM) was utilized to compare the combined clinical and economic impact of the open and laparoscopic approaches.

RESULTS

The laparoscopic approach compared favorably with the open approach from both a clinical and economic standpoint. Not only was the median length of stay (LOS) shorter by 2 days in the laparoscopic group (3 versus 5 days, respectively, P = 0.001), but the laparoscopic cohort also benefited from a significant reduction in postoperative morbidity (P = 0.001). Because the groups differed significantly in age and ratio of benign to malignant disease, a subgroup analysis limited to patients with malignant disease was undertaken. The same reduction in LOS and postoperative morbidity was evident within the malignant subgroup undergoing laparoscopic LLS (P = 0.003). The economic impact of the laparoscopic approach was noteworthy, with the laparoscopic approach US$1,527-2,939 more cost efficient per patient compared with the open technique.

CONCLUSION

Our study seems not only to corroborate the safety and clinical benefit of the laparoscopic approach but also suggests a fiscally important cost advantage for the minimally invasive approach.

Ressecões hepáticas por videolaparoscopia

INTRODUÇÃO: As ressecções hepáticas representam umas das últimas fronteiras vencidas pela cirurgia videolaparoscópica. Apesar da complexidade do procedimento, da demanda de grande incorporação de tecnologia e necessidade de experiência em cirurgia hepática e laparoscópica, a indicação do método tem crescido de forma expressiva nos últimos anos. OBJETIVO: Realizar análise crítica do método, baseada nos trabalhos existentes na literatura, ressaltando o estado atual de suas indicações, exequibilidade, segurança, resultados e aspectos técnicos primordiais. MÉTODO: Foram identificados e analisados os trabalhos pertinentes nas bases de dados LILACS e PUBMED até dezembro de 2009, utilizando-se os descritores "liver resection", "laparoscopic" e "liver surgery". Não foram encontrados trabalhos prospectivos e randomizados sobre o tema, sendo os dados disponíveis provenientes de série de casos, estudos caso-controle e alguns estudos multicêntricos e metanálises. CONCLUSÃO: A hepatectomia por videolaparoscopia é hoje operação segura e factível, mesmo para as ressecções hepáticas maiores, com baixo índice de morbimortalidade. O método pode ser utilizado para lesões malignas sem prejuízo dos princípios oncológicos e com vantagens nos pacientes com cirrose ou disfunção hepática. A melhor indicação recai sobre as lesões benignas, em especial o adenoma hepatocelular. Em mãos experientes e casos selecionados, como as lesões benignas localizadas nos segmentos anterolaterais hepáticos, principalmente no segmento lateral esquerdo, a ressecção videolaparoscópica pode ser considerada hoje como tratamento padrão.