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Inicio Cirugía Española (English Edition) Laparoscopic Liver Resection: Lessons Learned After 132 Resections
Información de la revista
Vol. 91. Núm. 8.
Páginas 524-533 (octubre 2013)
Visitas
8919
Vol. 91. Núm. 8.
Páginas 524-533 (octubre 2013)
Original article
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Laparoscopic Liver Resection: Lessons Learned After 132 Resections
Resección hepática por laparoscopia: lecciones aprendidas tras 132 resecciones
Visitas
8919
Ricardo Robles Campos
Autor para correspondencia
rirocam@um.es

Corresponding author.
, Caridad Marín Hernández, Asunción Lopez-Conesa, Vicente Olivares Ripoll, Miriam Paredes Quiles, Pascual Parrilla Paricio
Unidad de Cirugía Hepática y Trasplante Hepático, Departamento de Cirugía, Hospital Universitario Virgen de la Arrixaca, El Palmar, Murcia, Spain
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Table 1. Indications and Surgical Technique (n=132).
Table 2. Results of Laparoscopic Liver Surgery According to the Surgical Indication: Liver Metastases, Primary Malignant Tumours and Benign Tumours.
Table 3. Results Obtained by Comparing the First 61 Resections With the Second 62 Resections.
Table 4. Series With Over 100 Laparoscopic Liver Resections (Excluding Meta-analyses, Reviews and Multicentric Studies).
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Abstract
Introduction

After 20 years of experience in laparoscopic liver surgery there is still no clear definition of the best approach (totally laparoscopic [TLS] or hand-assisted [HAS]), the indications for surgery, position, instrumentation, immediate and long-term postoperative results, etc.

Aim

To report our experience in laparoscopic liver resections (LLRs).

Patients and method

Over a period of 10 years we performed 132 LLRs in 129 patients: 112 malignant tumours (90 hepatic metastases; 22 primary malignant tumours) and 20 benign lesions (18 benign tumours; 2 hydatid cysts). Twenty-eight cases received TLS and 104 had HAS. Surgical technique: 6 right hepatectomies (2 as the second stage of a two-stage liver resection); 6 left hepatectomies; 9 resections of 3 segments; 42 resections of 2 segments; 64 resections of one segment; and 5 cases of local resections.

Results

There was no perioperative mortality, and morbidity was 3%. With TLS the resection was completed in 23/28 cases, whereas with HAS it was completed in all 104 cases. Transfusion: 4.5%; operating time: 150min; and mean length of stay: 3.5 days. The 1-, 3- and 5-year survival rates for the primary malignant tumours were 100, 86 and 62%, and for colorectal metastases 92, 82 and 52%, respectively.

Conclusion

LLR via both TLS and HAS in selected cases are similar to the results of open surgery (similar 5-year morbidity, mortality and survival rates) but with the advantages of minimally invasive surgery.

Keywords:
Liver surgery
Benign liver tumours
Hepatic metastases
Hepatocarcinoma
Laparoscopic liver surgery
Resumen
Introducción

Tras 20 años de experiencia en cirugía hepática laparoscópica, aún no están bien definidos el mejor abordaje (totalmente laparoscópico [CTL] o asistido con la mano [CLA]), indicaciones quirúrgicas, posición, instrumentación, resultados postoperatorios inmediatos y a largo plazo, etc.

Objetivo

Presentar nuestra experiencia en resecciones hepáticas laparoscópicas (RHL).

Pacientes y método

En 10 años hemos realizado 132 RHL en 129 pacientes: 112 tumores malignos (90 metástasis hepáticas; 22 tumores malignos primarios) y 20 lesiones benignas (18 tumores benignos; 2 quistes hidatídicos). Veintiocho casos se realizaron por CTL y 104 por CLA. Técnica quirúrgica: 6 hepatectomías derechas (2 como segundo tiempo de una resección hepática en 2 tiempos); 6 hepatectomías izquierdas; 9 resecciones de 3 segmentos; 42 resecciones de 2 segmentos; 64 resecciones de un segmento y 5 casos de resecciones locales.

Resultados

No existió mortalidad perioperatoria. Morbilidad: 3%. Con CTL se completó la resección en 23/28 casos, mientras que con CLA se completó en los 104 casos. Transfusión 4,5%; tiempo quirúrgico 150min y estancia media de 3,5 días. La supervivencia a 1, 3 y 5 años de los tumores malignos primarios fue del 100, 86 y 62%, mientras que la supervivencia de las metástasis colorrectales fue del 92, 82 y 52%, respectivamente.

Conclusión

La RHL, tanto por CTL como por CLA, en casos seleccionados, reproduce los resultados de la cirugía abierta (morbimortalidad y supervivencia a 5 años similares), con las ventajas de la cirugía mínimamente invasiva.

Palabras clave:
Cirugía hepática
Tumores hepáticos benignos
Metástasis hepáticas
Hepatocarcinoma
Cirugía hepática laparoscópica
Texto completo
Introduction

The current indications for laparoscopic liver surgery (LLS), tumours less than 5cm located in the left anatomic lobe of the liver or in the anterior segment, were outlined in 2000,1 and these indications were re-established in the Louisville meeting2 in 2009. More complex laparoscopic liver resections (LLR) (e.g., posterior-superior segments, central tumours, proximity to large vessels, and major resections) should be performed in centres with experience in such procedures.3–7 The 2 fundamental approaches for LLR are total laparoscopic surgery (TLS)1,4,6 and assisted laparoscopic surgery (ALS),4,5,7,8 and a variety of factors, including the surgeon, pathology, lesion size, and the location of lesions, dictate procedure selection.

This article presents our experience with LLS using 2 laparoscopic approaches, TLS and ALS, and it presents the indications, advantages and disadvantages of both techniques. We also present the post-operative outcomes of our LLR series, which is the largest published series in our country.

Patients and Methods

We performed 683 liver resections between January 2003 and April 2012; 132 (19.3%) of these resections were LLR performed in 129 patients (2 LLR were performed in one patient, and resection was performed in 2 stages in 2 patients). LLR was performed in 5.5% of cases in 2003 (3/54 cases) and 23.3% of cases in 2011 (21/90 cases). The median patient age was 62 years (range 23–85), and 54 patients were women (42%).

The indication for LLR in 112 cases (85%) was a malignant tumour (Table 1): 90 liver metastases and 22 primary liver tumours. The remaining 20 resections (15%) were benign lesions: 18 benign tumours and 2 hydatid cysts.

Table 1.

Indications and Surgical Technique (n=132).

Indications
A. Malignant tumours  112 (84.8%) 
A.1. Liver metastases  90 
CLM  84 
GIST 
PNET 
Breast 
«tail gut» ADC 
A.2. Primary malignant tumours  22 
HCC cirrhosis  15 
HCC healthy liver 
Leiomyosarcoma 
peripheral CC 
B. Benign lesions  20 (15.2%) 
Hemangiomas 
Adenomas 
FNH 
Hydatid cysts 
DSCTN 
Cystoadenoma 
Indications hemangiomas
Tumour growth 
Tumour rupture 
Diagnostic suspicion 
Associated with cholelithiasis in S V 
Indications adenomas
All with tumour size>5cm
Indications FNH
Diagnostic suspicion and size>6cm
Indications in CLM
In 45 cases metachronous
In 35 cases synchronous (colon resection and delayed resection of LM in 34 cases, resection in one stage by removing sigma R0 by laparoscopy and bisegmentectomy VI+VIb)
Indications in LM without colorectal cancer
The indication was based on excised tumour
Indications in hepatocellular carcinoma
Lesions that required resection of 2 or more segments, peripheral (chemoembolisation of the segments to be resected)
Surgical technique
RH 
LH 
Resections 3 segments 
1 resection III+VII+IVB
1 resection III+V-VI
1 resection III+VI+VIII
2 resections IVb+V+VII
4 LLS+resections of other segments
Resections of 2 segments  42 
21 LLS
11 RLS (VI-VII)
5 V-VI
2 IVb-V
1 VII+III
1 VIII+III
1 III+V
Resections of one segment  64 
27 segmentectomies  VI 
6 segmentectomies  III 
7 segmentectomies  V 
6 segmentectomies  VIII 
6 segmentectomies  VII 
6 segmentectomies  II 
4 segmentectomies  IV
1 segmentectomy  IV 
1 segmentectomy  I 
Local resections 
2 hemangiomas
1 LM between segments IVa y IVb
1 FNH
1 adenoma
Manoeuvres added
1 resection of sigma
2 partial gastric resections
2 partial diaphragm resections
2 body and tail pancreatectomies plus splenectomy(TMNEP)
1 ovarian resection
1 hysterectomy
1 hilar lymphoidectomy CLM

ADC: adenocarcinoma; CC: cholangiocarcinoma; HCC: hepatocellular carcinoma; GIST: gastrointestinal stroma tumour; RH: Right hepatectomy; LH: Left hepatectomy; FNH: focal nodular hyperplasia; CLM: colorectal liver metastasis; DSCTN: desmoplastic spindle cell tumour in nests; PNET: Pancreatic neuroendocrine tumour; RLS: right lateral segmentectomy; LLS: left lateral segmentectomy.

We resected 203 liver lesions, and 42 of these cases exhibited 2 or more lesions (32%) with an average tumour size of 4.8cm (range 1–20cm). Lesions were localised in the right posterior-superior segments of the liver (VII and VIII) in 34 of these cases (26%). LLR was performed for the first time for the treatment of multiple bilobar colorectal liver metastases (CLM) in 4 cases: 2 cases underwent percutaneous portal vein embolisation 1 week before a right hepatectomy was completed via laparoscopy, and CLM was performed via laparotomy in the other 2 cases.

We employed TLS and ALS according to the following criteria:

  • -

    TLS (28 cases): TLS was indicated in 13 benign tumours, 11 hepatocellular carcinomas in cirrhotic livers, 3 hepatocellular carcinomas in healthy livers and 1 peripheral cholangiocarcinoma. The patient was placed in a supine position, and the surgeon stood between the patient's legs with 2 assistants. Three trocars were placed following a concave line to the lesion (one trocar is 12mm when an endovascular stapler is used) (Fig. 1A) to generate a pneumoperitoneum of 12mmHg. Another 3 optional trocars could be placed if necessary: in the epigastrium for liver retraction, in the right subcostal area to mobilise the right lobe and in the left flank to introduce the clamp used to perform the Pringle manoeuvre (described by our unit).9,10 We used an optic of 0° and a flexible laparoscopic ultrasound 5.5–7.5MHz, Philips©. Sectioning of the parenchyma was performed using a harmonic scalpel (Ethicon©), and the intrahepatic vessels were dissected with clips or hemolocks. The hepatic hilum was occluded using a LigaSure Atlas® (Covidien©). We transected the hepatic artery and portal vein in the portal pedicles with ligatures or hemolocks in right and left lobe dissections, and the biliary tract was transected with staples. The suprahepatic veins were dissected and transected with staples. Hemostasis of the liver surface was performed using Tissuelink® (Primm©), and bile leaks were sutured. Hemostatic material was placed on the liver surface (TachoSil®-Nycomed©), and non-aspiration drainage was placed when necessary. The resected specimens are placed in a bag and removed through a Pfannenstiel incision.

    Fig. 1.

    Trocar placement in total laparoscopic surgery (TLS) and in assisted laparoscopic surgery (ALS) with aesthetic results. (A) TLS and the cosmetic result (Pfannestiel incision). (B) ALS, cosmetic result in hepatocellular carcinoma and metastatic colorectal cancer.

    (0.42MB).
  • -

    ALS (104 cases): ALS was indicated in 90 cases of liver metastases (LM) of correct staging: 6 for large tumours (2 benign and 4 malignant primary tumours between 7 and 20cm); 6 for tumours in the right posterior segment (5 large benign tumours of 5cm and one hepatocellular carcinoma); and 2 cases converted from TLS to ALS. We employed the technique originally described and published by our unit9,10 (Fig. 1B), which is briefly described here. A transverse incision was made in the right flank from the mid-axillary line to the anterior axillary line, where a handport was placed (GelPort®; Applied Medical©). A full manual examination of the liver and abdominal cavity was performed, and an abdominal ultrasound (Entos®, CT8, Philips©) exploration was performed introduced through the handport. The remainder of the procedure was similar to the procedure for TLS. The resected liver specimen was placed in a bag and removed via the handport.

We performed 21 major resections (16%): 6 right hepatectomies, 6 left hepatectomies and 9 resections of 3 segments (Table 1). Intraoperative radiofrequency ablation was used in 7 patients (2 for the treatment of cirrhotic nodules, 2 to treat CLM of 1cm size, and 3 to ensure that the surgical margin was clear after the resection of CLM). Additional procedures following LLR were performed in 10 patients (Table 1). The anaesthetic and central venous pressures (CVP) are identical to the parameters of open surgery (CVP below 4).

We calculated the overall survival and disease-free rates at 1, 3 and 5 years using the Kaplan–Meier method. Comparisons of means between groups were performed using the Student t-test or the Behrens–Fisher test, depending on the homogeneity of variances between samples, or the non-parametric Mann–Whitney test. We compared percentages between groups with analysis of contingency tables using the Chi-square test or Fisher exact test when case frequencies were low.

Results

No intra- or post-operative deaths occurred. Complications occurred in 4 cases (3%) (2 cases with collections requiring radiological-guided drainage: 1 case of a biliary fistula and 1 case of sepsis due to an infected collection, both cases required reoperation). Transfusions were required in 4.5% of cases (6 patients), and the median operative time was 150min (range 60–360min). The average hospital stay was 3.5 days (range 2–30 days). The Pringle manoeuvre was used in 44 cases (33.3%) with a median time of 16min (range 6–21min): hemi-hepatic occlusion was performed in 12 cases, 2 cases underwent selective hepatic artery and right portal vein occlusion, and the remaining 74 resections were performed without vascular occlusion.

Three TLS cases were converted to laparotomy (2.3%): 1 case of haemorrhage of a liver adenoma 8cm in size in segment VII and 2 cases of CLM due to blocking adhesions with an accidental perforation of a small bowel loop. TLS resection was completed in 23 of 28 cases (82%): besides the 3 cases converted to laparotomy, 2 cases were converted to ALS. ALS laparoscopic resection was completed in 104 cases.

ALS was used to resect CLM that were first staged using ultrasound, visualisation of the abdominal cavity and palpation within a prospective comparative study between both staging methods. Eighty-four LR were performed for CLM: 77 were staged (liver resection was performed in 2 stages in 2 patients, and 2 patients who were conversions from TLS to laparotomy and 3 resections in cirrhotic livers were excluded). The addition of palpation detected more disease than ultrasound examination alone in 8 patients (10%) and a peritoneal implant was detected in one of these cases.

Age and comorbidity for benign tumours (Table 2) (Fig. 2A, 2) were lower than in the LM and primary malignant tumours (Fig. 2B, 1, 2 and 3), and tumour size and the percentage of women was higher (P<.05). Blood loss, operating time and the number of nodules were higher in LM (Fig. 2C, 1, 2) than in other indications (16 patients had 3 or more lesions), and surgical margins invaded further into the parenchyma in 3 patients. Overall survival and disease-free survival at 1, 3 and 5 years of CLM were 92, 82 and 52% and 85, 60 and 32%, respectively. The number of cirrhotic livers in primary malignant tumours was higher, and there were fewer major resections than in the other 2 groups. Blood loss, the use of the Pringle manoeuvre, operative time, hospital length of stay and morbidity were lower in the other 2 groups. Overall survival and disease-free rates at 1, 3 and 5 years was 100, 86 and 62% and 94, 80 and 50%, respectively.

Table 2.

Results of Laparoscopic Liver Surgery According to the Surgical Indication: Liver Metastases, Primary Malignant Tumours and Benign Tumours.

Parameters  Liver metastases (n=90)  Primary malignant tumours (n=22)  Benign tumours (n=20) 
Median age (range)  63 (42–85)  65 (39–83)  39 (23–51) 
Sex (F) (%)  30 (33.3)  8 (36)  16 (80) 
Comorbidity (%)  40 (44.4)  9 (41)  1 (5) 
Cirrhotic liver (%)  3 (3.3%)  15 (68%) 
Number of nodules  159 (1.8%)  24 (1.1%)  20 (1%) 
1 nodule (%)  49 (54.4)  21 (95.4)  20 (100) 
2 nodules (%)  25 (27.7)  1 (4.6) 
3 or more nodules (%)  16 (17.7) 
Median tumour size (cm)  3.3 (1–10)  4 (1.5–12)  9 (3–20) 
Conversion (%)  2 (2.2)  1 (5) 
Major resections (%)  18 (20)  1 (4.5)  2 (10) 
TLS/ALS (%)  0/90 (100)  15/7 (31)  13/7 (35) 
Blood loss (ml)  205 (50–900)  120 (50–600)  120 (100–600) 
Transfusions (%)  4 (4.4)  1 (4.5)  1 (5) 
Pringle (%)  31 (34.4)  5 (22)  8 (40) 
Hemi-hepatic (%)  9 (10)  1 (4.5)  2 (10) 
Surgical time, in minutes (range)  177 (60–360)  112 (60–240)  150 (60–300) 
Morbidity (%)  3 (3.3)  1 (5) 
Hospital stay, in days (range)  4.3 (2–30)  3 (2–12)  4.2 (2–20) 
Survival rate at 1, 3 and 5 years (%)  92, 82 and 52  100, 86 and 62  100, 100 and 100 

ALS: assisted laparoscopic surgery; TLS: Total laparoscopic surgery; F: female.

Fig. 2.

Images of some tumours in our series. (A) Benign tumours. (1) Atypical hemangioma. (2 and 3) Desmoplastic spindle cell tumour in nests (HI surgical specimen). (B) Primary malignant tumours. (1) Hepatocellular carcinoma in cirrhosis with chemical embolisation (2) Hepatocellular carcinoma in healthy liver with pre-operative chemical embolisation (3) Intrahepatic cholangiocarcinoma that required right hepatectomy by TLS. (C) Liver metastases. (1) Neuroendocrine tumour of the body and tail of the pancreas with liver metastasis in segment VIII. (2) CLM with 2 lesions in the right lobe that required right hepatectomy by ALS.

(1.06MB).

More cirrhotic livers were observed in the final 66 resections (Table 3) than in the first 66 resections, and no patients were converted to laparotomy. We have conducted more major hepatic resections with a decrease in blood loss, transfusions, Pringle manoeuvres, operating time and hospital stay with increased experience.

Table 3.

Results Obtained by Comparing the First 61 Resections With the Second 62 Resections.

Parameters  Resections 1–66  Resections 67–132  P 
Median age, years (range)  59 (24–78)  64 (32–85)  NS 
Sex (F) (%)  28 (42.4)  26 (39.3)  NS 
Comorbidity (%)  24 (36)  26 (39.3)  NS 
Liver cirrhosis (%)  3 (5)  15 (23)  .05 
Liver metastases (%)  47 (71)  43 (65)  NS 
Primary malignant tumours (%)  7 (11)  15 (23)   
Benign tumours (%)  12 (18)  8 (12)   
Number of nodules  106 (1.6%)  97 (1.5%)  NS 
Median tumour size (range)  4.2 (1–20)  4.25 (1–17)  NS 
Conversion (%)  3 (4.5)  .05 
Major resections (%)  7 (11)  14 (21)  .05 
TLS/ALS (%)  8/58 (88)  20/46 (69.6)  NS 
Blood loss in ml (range)  200 (50–900)  120 (50–600)  NS 
Transfusion (%)  4 (6)  2 (3)  .05 
Pringle (n=43) (%)  28 (42)  16 (24)  .05 
Hemi-hepatic (n=11) (%)  4 (6)  8 (12)  NS 
Surgical time in minutes (range)  171 (60–360)  138 (60–240)  NS 
Morbidity (%)  2 (3)  2 (3.3)  NS 
Hospital stay in days (range)  6 (2–30)  3 (2–25)  .05 

ALS: assisted laparoscopic surgery; TLS: Total laparoscopic surgery; F: female.

Discussion

We initiated LLS of cystic liver lesions in 199311 within the context of our overall experience in general laparoscopic surgery.12–15 We began LLR in January 2003 after we acquired experience in open liver surgery (177 resections). Three LLR series have been published in Spain, and all of these studies include less than 100 cases.16–18 One national multicentric study examined 104 LLR of solid lesions in 15 centres.19 Recent institutional studies have included more than 100 LLR (Table 4),20–38 and recent reviews of almost 3000 patients39–50 have attempted to verify the safety (morbidity) and curative efficacy compared to open surgery.

Table 4.

Series With Over 100 Laparoscopic Liver Resections (Excluding Meta-analyses, Reviews and Multicentric Studies).

Author  Number of patients  Surgical indications  Approach  Major resections  Conversion  Transfusion  Pringle  Morbidity  Mortality  Stay 
Koffron et al.20  300  Cysts 70; TB 107; TM 103; donor 20  TLS 241; ALS 32; hybrid 27  119: HI 47; HD 64; RT 8  from TLS to ALS in 6% (20)  2 in 300  No  9.3  1.9 
Chen et al.21  116  HCC  TLS  4: total LH  6 (5.2%)  8 cases    7 cases 
Topal et al.22  102  TB 32; TM 77  TLS  21: RH 14; LH 4; tri-segmentectomies 3  7 cases  Loses: 100 (5–4000)  11 cases  6 (5.5%)   
Cho et al.23  128  TB 50; TM 78  TLS  36: RH 13; LH 23  4 (3.1%)  20 cases  No  9 cases  11 
Buell et al.24  306 (253 patients)  Cysts 40; BT 107; MT 106  TLS ALS  62: RH 33; LH 24; RT 5  2 cases  7%    16%  4 (1.6%)  2.9 
Han et al.25  170  Hepatolithiasis 58; BT 15; MT 97  TLS  21: RH 12; LH 9  6 (5.4%)  Loses: 506 (10-1800)  No  17 (15.2%)  9.5 
Bryant et al.26  166  Cysts 17; BT 49; MT 100  TLS 150; ALS in 16  31: RH 19; LH 11; hepat central 1  16 (9.6%)  9 (5.4%)  88 cases  25 (15.1%) 
Wakabayashi et al.27  176  BT: 12; MT 157; donor 7  TLS 131; ALS 45  24: RH 12; LH 11; TD 2  1.7%  9 (5.1%)  No  8 (4.5%)  NA 
Castaing et al.29  215 (60)  CLM n=60  TLS  26: RH 22; extended resections 2; hepatec central 1; left lobectomy+segmentectomy  6 (10%)  15%  17%  27%  1.7%  10 
Vigano et al.28  174  TB 67; TM 107  TLS 156; ALS: 18 (10%)  35: RH 23  17 (9.8%)  9 (5.1%)  91 (52%)  25 (13.7%) 
Nguyen et al.31  314  Cysts 24.2%; T. solid 75.8%: BT: 54.6% and MT: 45.4%  TLS 56%; ALS 37%; hybrid 3.5%  47: RH 21; LH 26  33 (7.7%)  51 (14.6%)  No  CCR 4%; HCC 6%  3 days 
Kazaryan et al.30  135  CLM  TLS  6: RH 5; LH 1  5 (4.2%)  16 (14%)  No  16 (14%)  1 of 122 
Troisi et al.32  110 (LLS 37 cases)  De los 37 LLS (BT 17; MT 19; donor 1)  TLS  All LLS  No  3 (8.1%) 
Cannon et al.33  300  BT 168; MT 132  ALS 211 (70.3%)  133 (44.3%)  4 cases  21 (7%)  11%  5 (1.7%)  32 (10.7%) in LR major  NA 
Costi et al.35  100  benign T.: 28; malig T: 33; live donor: 39  TLS  13: RH 4; LH 4; Resections 3; segmentectomy 5  17 cases  1 case  15 cases  21  9 days 
Abu-Hilal et al.36  215 (133 malignant tumours)  CLM: 83; HCC: 18; NET: 17; LM no CRC: 11; lymphoma: 2; CCC intrah: 2  TLS  42 R. major 1 (32%): RH 34; LH 6; trisegmentectomies 2  7 cases to laporotmy; 4 to ALS  300ml (10–3000)  No  16 (13%)  1 (0.8%)  4 days 
Ker et al.34  116  HCC  TLS  4: LH 4  6 (5.2%)  8 (6.9%)  No  7 (6%)  6 days 
Yoon et al.37  225 (107 HCC)  HCC  TLS  11: RH7; LH 3; central 1  5 (4.7%)  31 (29%)  No  18 (16.8%)  9.3 
Kwon et al.38  111 (61 TM)  MT: 34 HCC; 3 CCI; 24 LM  TLS  4: RH 2; LH 2  2 (3%) to laparotomy  11 (18%)  No  9 (14%)  9 days 

CCC: cholangiocarcinoma; ALS: assisted laparoscopic surgery; HCC: hepatocellular carcinoma; RH: right hepatectomy; LH: left hepatectomy; CLM: colorectal liver metastases; NO not obtainable; LLS: left lateral sectionectomy; BT: benign tumours; RT: right trisectomectomy; MT: malignant tumours; NET: neuroendocrine tumours.

Many authors, especially in Europe,1,6,16,17,26–30,35,36 prefer TLS and reserve ALS for conversion. However, 42 of 103 resections (40.4%) in a review of LLR by CLM were performed using ALS, and it was more frequently used in American centres (85%) than European (15%).31,42 The Louisville meeting concluded that ALS is quick, safe and most likely more effective than TLS for LM, and it highlighted the high rate of TLS use in the U.S.2,41 and Japan.38 A problem of TLS in CLM is the possibility of failure to detect occult lesions using laparoscopic ultrasound examination. This problem has been demonstrated in several studies in which the addition of liver palpation in staging detected liver disease and/or inadvertent peritoneal lesions in 10%–20% of cases when converting to laparotomy or ALS.8,51–53 Our results in CLM demonstrate under-staging in 10% of cases, which suggests that palpation is essential for proper staging.53

TLS is the indicated approach in primary malignant tumours because they are often unique surgeries, and palpation is ineffective for the adequate staging of hepatocellular carcinoma in cirrhotic livers. Staging must be performed with ultrasound alone in these cases (in our series, there were 15 out of 22 cases by TLS). TLS of hepatocellular carcinoma in cirrhosis may reduce postoperative ascites due to the preservation of the collateral circulation.16,17,21,28,34,37 We use pre-operative chemical embolisation of the segments to be resected54 to decrease the amount of haemorrhage and the need for the Pringle manoeuvre. This technique may also ensure the surgical margin because most of the chemically embolised nodules exhibited greater than 90% necrosis.

Benign tumours are a good indication for LLS because these patients are young and present with solitary tumours (Table 2) and the cosmetic result is important. TLS is the ideal approach because the resected liver is extracted through a Pfannenstiel incision, and this approach was performed in 13 of 20 of our patients. ALS may be an alternative start for large tumours and/or localisation in posterior segments of the right lobe5,8,10,18,20,21,31 or after conversion from TLS. TLS has not changed the indication of benign tumours in our unit, and this procedure was used for 6% of all solid tumours that were resected until January 2003 and 7.5% since that date. However, benign tumours account for 20%–50% of the indications in some series.19,20,26

The size and localisation of lesions are important for the selection of patients for LLS.4,5,10,16–18,20,23,24,31 In our series, 36 patients (25%) had tumours larger than 5cm. Additionally, the difficulties are even greater if these large lesions are located in posterior segments (as occurred in 9 of the 34 patients with tumours in that location), and some surgeons advocate placing the patient in the lateral decubitus position.1,16,17,28,33 However, ALS in supine patients has expanded the initially recommended indications for some authors, especially American and Asian authors, and for us.5,10,18,20,24,31,33 This position allows us to more easily address posterior right lobe lesions and perform a higher percentage of hepatic resections and hemi-hepatectomies. Our unit performed this resection in 16% of cases. The use of the hand reproduces the advantages of open surgery, including liver mobilisation, vascular pedicle control and compression, for some American20,24,31,33 and Japanese authors.38,39

The conversion of TLS to laparotomy oscillates between 0% and 20%.10,16–18,20–38 Our conversion rate is 2.3%, and this rate is related to the approach employed. Therefore, TLS became laparotomy in 3 of the 28 cases, and there was no conversion to ALS. An alternative to conversion to laparotomy from TLS is conversion to ALS, which is a manoeuvre that we and some other authors (0.3% conversion)20,41,42 have used.

The margin of invasion in malignant tumours is a cause for conversion.24,26,30,33,40 The margin with TLS, is accounted for by the performing of repeated scans,1,6,16,17,26,28 and the margin in ALS is accounted for by using palpation and ultrasound examination.5,8,10,20,24,41 Some authors have used radiofrequency ablation of the surgical resection bed when the margin is invaded to prevent conversion,24,41,42 and we employed this approach in 3 of our patients. Adhesions in patients with CLM is another cause of conversion,30,41,42 which occurred in 2 of our cases who also exhibited associated bowel lesions. The most frequent cause for conversion is haemorrhage,1,10,16,17,19,30,36,47 which can occur during the sectioning of the parenchyma or the dissection of the portal vessels, inferior vena cava (IVC) and hepatic segment veins. Manual compression is lost with TLS and requires the bleeding to be controlled mainly with the Pringle manoeuvre. Direct compression in ALS reduces blood loss and provides greater security against possible vascular lesions. Vascular injury is difficult to control, and it often requires conversion. However, some surgeons have sutured lesions of the IVC and hepatic segment veins.6 We control haemorrhage in ALS of IVC lesions, injuries to the right hepatic artery, a portal vein injury and a torn right middle hepatic segment vein by laparoscopic suturing. We suggest that the above techniques and left lateral segmentectomy can be performed safely without vascular occlusion, but the Pringle manoeuvre provides greater security for right posterior segments.

Vascular control of the hepatic segment veins is a complex manoeuvre. Middle and left vascular pedicle dissection can be performed more easily in left hepatectomy because of the space that exists with the IVC, which allows vascular staple transection. We performed this manoeuvre in 5 of the 6 patients. We have performed the control of the right hepatic segment veins, which is a very complicated manoeuvre,6 on 4 occasions.

In conclusion, LLR, either by TLS or ALS, shares all the advantages of minimally invasive surgery (e.g., better and faster postoperative recovery, better cosmesis and less postoperative analgesic requirements) with rates of complications and survival in malignant tumours that are similar to the results reported for open surgery.

Conflicts of Interest

The authors declare that they have no conflicts of interest.

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Please cite this article as: Robles Campos R, Marín Hernández C, Lopez-Conesa A, Olivares Ripoll V, Paredes Quiles M, Parrilla Paricio P. Resección hepática por laparoscopia: lecciones aprendidas tras 132 resecciones. Cir Esp. 2013;91:524–533.

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