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Erschienen in: European Surgery 3-4/2023

Open Access 18.04.2023 | review

Laparoscopic deroofing of simple liver cysts: do ancillary techniques, surgical devices, and indocyanine green improve outcomes?

verfasst von: Alessia Kersik, MD, Luca Galassi, MD, Giulia Colombo, MD, Prof. Luigi Bonavina, MD

Erschienen in: European Surgery | Ausgabe 3-4/2023

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Summary

Background

Giant liver cysts causing compression symptoms require surgical therapy. Laparoscopy is nowadays considered the first-line approach and has been shown to be non-inferior to open surgery. Ancillary techniques and novel technologies may have the potential to reduce complications rates and improve long-term outcomes.

Methods

The management of a female patient with a giant and symptomatic liver cyst is reported, as is a literature search in PubMed and Scopus spanning the past two decades, with the aim of assessing current evidence regarding procedural details of laparoscopic deroofing.

Results

Wide laparoscopic deroofing of a 21-cm liver cyst arising from segment 6 was safely performed under indocyanine green fluorescence imaging using a combination of ultrasonic energy excision and stapling. A contemporary literature review showed that only 22 of the 35 publications included details of the surgical procedure. Ancillary techniques such as omentopexy, argon plasma coagulation, monopolar radiofrequency device ablation, and ethanol sclerotherapy were rarely used (10.8% of patients). Use of energy devices and/or linear staplers was reported in 22 (62.8%) studies. Indocyanine green fluorescence was reported in 4 (11.4%) studies.

Conclusion

The case report and the literature review show that wide laparoscopic deroofing of giant liver cysts is an effective and relatively simple procedure. Use of emerging technology such as indocyanine green fluorescence imaging can further enhance precision surgery and minimize complications and long-term recurrence rates.
Hinweise

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Main novel aspects
  • Wide laparoscopic deroofing of simple liver cysts in favorable anatomical locations remains the procedure of choice.
  • Combination of ultrasonic dissection and stapling for excision of the cyst wall near the transition zone with liver parenchyma is effective, safe, and timesaving.
  • Near infra-red imaging with indocyanine green may enhance the safety of the procedure.

Introduction

Simple liver cysts (SLC), also known as biliary retention cysts, are benign masses filled with fluid that originate from malformation of the ductal plate during embryologic development, likely from micro-hamartomas or peribiliary glands isolated from the bile ducts. The reported prevalence in the general population is 3–18% [1, 2]. These cysts are generally asymptomatic, have no malignant potential, and only 5–10% of patients are thought to become symptomatic [3]. However, the cyst can increase in size with age, causing compression symptoms such as abdominal pain and distention, nausea, anorexia, early satiety, gastroesophageal reflux, weight loss, jaundice, dyspnea, and inferior vena cava syndrome. Patients can also present with a palpable mass, and/or complications such as intra-cystic bleeding and rupture [3].
In 1968, Lin et al. [4] first described the surgical technique of liver cyst fenestration through a laparotomic approach. With the advent of minimally invasive surgery, laparoscopy has become the standard of treatment and has proven feasible and safe even in patients with giant cysts, at least in anatomically favorable locations [5]. Herein, we describe a case of laparoscopic fenestration performed with ultrasonic dissection and stapling, assisted by indocyanine green (ICG) fluorescence. We also performed a literature review spanning the past two decades to summarize the current status of laparoscopic fenestration and the possible impact of technical details and technology on clinical outcomes.

Case report

A 63-year-old woman with a body mass index of 24.3 kgm-2 was referred to our hospital for debilitating, worsening abdominal pain and tenderness that started about 6 months prior to admission. No concomitant gastrointestinal symptoms were reported. Her medical history included saphenectomy and carpal tunnel release. At physical examination, only epigastric tenderness was noticed. Abdominal ultrasonography showed a 21-cm hepatic cyst located in the right liver lobe and displacing the right hemidiaphragm and the right kidney. Gallbladder microlithiasis was also present. Magnetic resonance imaging confirmed a well-defined giant hepatic cyst arising from segment 6 with regular thickened walls, small calcifications, some intra-cystic septa, no nodules, and homogenous fluid filling on T1-weighted images; no enhancement after contrast injection was noted (Fig. 1).
A complete blood panel including tumor markers (alfa-fetoprotein, carcinoembryonic antigen [CEA], neurospecific enolase [NSE], carbohydrate antigen [CA] 15‑3, CA 19‑9, CA 125) and serological testing for hydatidosis resulted negative. The diagnosis of simple giant hepatic cyst was eventually confirmed, and the patient agreed to undergo laparoscopic fenestration. Upon pre-admission, she was classified as American Society of Anesthesiologists (ASA) score 1.
On the day of the procedure, about 4 h before induction of anesthesia, 2.5 mg of ICG (Verdye, 5 mg/ml injection, A.P.M. Srl, Trezzano sul Naviglio, Milan, Italy) was administered intravenously. The patient was placed in the supine position with arms extended and legs apart. Pneumoperitoneum was established by the Veress needle technique, and the abdomen was entered using a 12-mm optical trocar inserted into the left hypochondrium. Three additional operative trocars (one 12 mm and two 5 mm) were inserted. Peritoneal lavage for cytological analysis was performed. The cyst was punctured and approximately 2.4 L of serous fluid was suctioned and sent for cytological examination. Further opening of the cyst wall with a monopolar cautery allowed inspection of the inner surface of the cyst, and no visible nodules or bile leakage were noticed. Wide deroofing was then performed using a combination of harmonic scalpel (Ultracision, Ethicon Endosurgery, Norderstedt, Germany) and Tri-Staple EndoGIA (US Surgical, Norwalk, CT; Reload 45.0 mm and 60.0 mm). Indocyanine green fluorescence imaging helped to identify the liver edge close to the cyst wall and guided the choice of the surgical device. Given the significant thickness of the cyst wall near the liver parenchyma, we preferred to use the linear stapler. After the deroofing procedure had been completed, we confirmed that there was no bleeding from the staple lines and no ICG leakage from the inner surface of the cyst. Finally, simultaneous retrograde cholecystectomy was performed (Fig. 2). The resected cyst and the gallbladder were inserted into an extraction bag and removed from the left lateral port site. The procedure lasted 130 min, and the estimated blood loss was < 50 mL. The postoperative course was uneventful, and the patient was discharged home on postoperative day 3 in good general condition with a mean VAS score of 3. Histopathological examination confirmed a SLC composed by cuboidal epithelium and fibrous stromal tissue. Results of peritoneal cytology were negative. At 1‑year follow-up the patient is completely asymptomatic and abdominal ultrasound show no recurrence.

Discussion

Simple liver cysts are often asymptomatic and have no malignant potential. However, symptoms from large cysts can arise and surgical therapy is warranted in these patients. Although there is no clear cut-off for defining a giant liver cyst, it has been reported that cysts > 10 cm in diameter are more likely to cause compression-related symptoms [6]. Cyst contents are usually serous, but proteinaceous material from previous intra-cystic hemorrhage may be present. Massive hemorrhage and/or spontaneous rupture of SLC has also been described and may require an emergency surgical procedure [3].
Treatment modalities for SLC range from percutaneous needle aspiration and sclerotherapy with ethanol injection to open or laparoscopic fenestration. Liver resection is usually performed in the setting of polycystic liver disease or when biliary cystoadenoma or carcinoma is suspected [1].
Laparoscopic deroofing, first described by Z’Graggen et al. [7] in 1991, has gradually become the surgical therapy of choice, especially for cysts located in the ventral and left lateral locations. Kisiel et al. [8] reported the long-term outcomes including symptom relief and quality of life in 48 patients operated in a single hepatobiliary unit between 2000 and 2012. There was one (2%) bile leak and no mortality. These patients were followed for a median of 62 (22–173) months and 60.4% were followed up for over 5 years. Of 46 patients who had initial symptom relief, 37 (80%) reported long-term symptomatic benefit and 2 underwent redo surgery with open fenestration and omentopexy. In a large meta-analysis including 62 studies with a total of 1314 patients, Bernts et al. [2] reported symptomatic relief in 90.2% and symptomatic recurrence in 9.6% of the patients, with a reintervention rate of 7.1%. The postoperative complication rate was 10.8% and the major complications rate 3.3%, with a procedure-related mortality of 1%.
A search of English-language case reports or case series published in PubMed and Scopus identified 35 publications, with a total of 148 patients treated by laparoscopic deroofing of large hepatic cysts. We restricted our search to January 2000 to December 2022. We included studies reporting on both conventional and single-port laparoscopy (Table 1).
Table 1
Summary of the selected publications
Reference
Year
No. patients
Age, years
(range)
Anatomical site
Size, cm (range)
Clinical presentation
SPL
Ancillary technique
ICG
Surgical device
FU, months
Eriguchi [9]
2001
2
72.5
(69–76)
15.5
(14–15)
Abdominal pain, jaundice
Ethanol sclerotherapy
Fiamingo [10]
2003
16
57
(35–72)
11
(7–13)
Abdominal pain and fullness, jaundice
Omental flap
2–72
Cheung [11]
2005
1
73
RL
17
Rupture, acute abdomen
HS
3
Antonini-Canterini [12]
2007
1
47
18
Abdominal pain
Mekeel [13]
2008
2
82 (80–84)
RL
25.7
(25–26.5)
Abdominal fullness, anorexia
Omental flap
HS—EndoGIA
7–48
Donati [14]
2010
21
LL (11), RL (8)
9.7
HS
40
Sasaki [15]
2010
1
RL
Yes
LS
3
Mantke [16]
2010
1
49
Abdominal pain, fullness
Yes
HS
Kashiwagi [17]
2010
1
83
RL
Inferior vena cava syndrome
Yes
APC ablation
2
Fischer [18]
2011
1
69
RL
25
Abdominal pain, satiety
Omental flap
HS
Lalezari [19]
2012
1
77
RL
20
Abdominal pain, distension
HS
Dapri [20]
2012
1
53
RL
15
Abdominal pain
Yes
25
Imamura [21]
2013
1
72
RL
11.5
Jaundice
Yes
LS
4
Gocho [22]
2013
6
60
(53–73)
LL (3), RL (3)
11.1
(10–15.2)
Yes
LS
8–20
Wu [23]
2014
30
LL (20), RL (10)
11.6
Yes
HS
1–24
Iimuro [24]
2014
7
71.6
Abdominal pain, satiety
LS
Lee [25]
2014
29
64.5
9.6
Pain, nausea, vomiting, jaundice
HS
62
Riccio [26]
2014
1
53
LL
20
Early satiety, nausea, epigastric pain
HS
Igami [27]
2015
1
80
RL
14
Abdominal pain
Yes
MRD ablation
HS—EndoGIA
24
Willems [28]
2015
1
68
RL
16
Abdominal fullness, nausea
Yes
APC ablation
HS
Shimada [29]
2016
1
61
RL
Rupture, acute abdomen
LS
Imaoka [30]
2016
1
67
RL
10.5
Rupture, acute abdomen
APC ablation
HS
8
Tanaka [31]
2016
1
80
Abdominal pain, distension
Yes
Marques [32]
2019
1
48
RL
9
Rupture, acute abdomen
LS
Carvalho [33]
2019
1
59
LL
10.6
Abdominal pain
HS
Clancy [34]
2019
1
66
RL
19
Right upper quadrant pain
Umemura [35]
2021
6
66.5
(60–79)
23
(20–28)
Yes
End GIA
Tanioka [36]
2021
1
69
11.5
Yes
LS
Le [37]
2021
1
69
RL
Superior vena cava syndrome
Brusic [38]
2021
1
55
RL
20
Acute abdomen
12
Nakabayashi [39]
2021
1
80
RL
19
Inferior vena cava syndrome, dyspnea
Omental flap
2
Shimagaki [40]
2022
1
78
RL
11.5
Abdominal pain, distension
Omental flap
Yes
LS
Kenzaka [41]
2022
1
88
LL
>10
Acute pancreatitis
Chogahara [42]
2022
2
78.5
(72–85)
RL
10.5
(8.9–13)
Rupture, acute abdomen
Calabrese [43]
2022
3
67.7
(52–86)
12.5
(4.7–12)
Sepsis, abdominal pain
Ethanol sclerotherapy
RL right liver, LL left liver, SPL single-port laparoscopy, ICG indocyanine green, HS harmonic scalpel, LS LigaSure, endoGIA endoscopic linear stapler, APC argon plasma coagulation, MRD monopolar radiofrequency device
Studies reporting procedures performed via open laparotomy or robotic surgery and/or associated with liver resections for polycystic liver disease (PLD) were excluded. Pediatric patients were also excluded. According to Murad et al. [44], we assigned a high, medium, or low quality score to each study according to clinical relevance, and reported surgical details and length of follow-up.
Based on the above criteria, one third of the studies (28.5%) were considered to be of high quality. Single-port laparoscopy was performed in 9 studies, for a total of 28 patients (18.9%). Simple liver cysts were more common in women, with a male to female ratio of 1:3.2. Patient age ranged between 47 and 88 years, with a mean age at diagnosis of 72 years. Hepatic cysts ranged in size from 5 to 28 cm and were slightly more frequent in the right (n = 42) than in the left liver segments (n = 37). The majority (78%) of patients had a single liver cyst. Seven studies reported a total of 12 patients with PLD [10, 12, 20, 26, 31, 38, 41]. Overall, 7 (4.7%) patients presented with acute abdomen and underwent emergency surgery for spontaneous cyst rupture, intra-cystic bleeding, or infection [11, 29, 30, 32, 41, 42]. Conversion to laparotomy was reported in only 1 patient (1/149, 0.6%) and was due to a challenging hepatic mobilization during excision of a single hepatic cyst located in segment 8 [10].
Surprisingly, only 22 publications included details of the surgical procedure and devices used to complete the fenestration. In a minority of patients (10.8%), laparoscopic deroofing was combined with omentopexy (n = 8), argon plasma coagulation (n = 4), or was preceded by ethanol sclerotherapy (n = 4). To date, there is no clear consensus in the literature regarding the real efficacy of these ancillary techniques in terms of the recurrence rate, and the evidence to support their use is limited. In addition, they are not free from complications such as cauterization of a major vascular structure or iatrogenic cholangitis due to the sclerosing agent [2].
Regarding the surgical device, the harmonic scalpel (UltracisionTM) was used in 13 centers and a vessel-sealing system (LigaSureTM) in 8. Both devices are considered effective and safe in liver surgery [45, 46].
On the other hand, we found only 3 publications reporting use of a stapling device during laparoscopic deroofing [13, 27, 35]. Stapling devices have gained popularity in laparoscopic liver surgery and are generally employed for major vessel division and less frequently for parenchymal transection [47, 48]. Some authors have used an endoscopic linear stapler to minimize any possibility of blood loss or bile leaks during excision of a thick cyst wall [27]. Interestingly, Umemura et al. [35] used a linear stapler to prevent bile leakage after injecting ICG through an endoscopic nasobiliary drainage. We used the harmonic scalpel to initially excise the cyst wall but then preferred to complete the deroofing with an endoGIA stapler due to the thickness of the cyst wall near the liver parenchyma.
For years, it has been known that intravenously administered ICG is excreted into the bile [49]. In this review, use of ICG was reported in only four studies, all published after 2016. In the case reported by Tanaka et al. [31], intravenous ICG allowed identification of an unexpected bile leakage, which could not be identified in the initial laparoscopic view. However, there is a lack of agreement on the timing of ICG administration. During laparoscopic cholecystectomy, ICG is administered between 0.5 h and 24 h before the procedure. In 3 patients undergoing laparoscopic deroofing [31, 36, 40], ICG was injected intravenously 1 h before surgery, after induction of anesthesia, and 24 h before surgery (followed by an intraoperative boost). We decided to administer ICG 4 h before induction of anesthesia, and there was no need for an intraoperative boost. Indocyanine green fluorescence helps to recognize the correct boundaries to liver parenchyma and to assess the real thickness of the cyst wall edges. Recent consensus guidelines on the use of ICG during open and laparoscopic hepatobiliary surgery state that intraoperative fluorescence imaging improves anatomical visualization, has the potential to guide surgical dissection, and is capable of augmenting safety, efficiency, and outcomes [49].
Finally, from our literature search, only 5 patients presented with a symptomatic recurrence during a follow-up ranging from 2 to 72 months from the index operation, and all required laparoscopic revision [10, 14, 25]. Limitations of this review are that some studies do not describe the extent of deroofing, a short follow-up may have underestimated recurrence rates, and postoperative imaging may have been undertaken only in patients with recurrent symptoms.

Conclusion

Our case report and literature review show that wide laparoscopic deroofing of SLC is an effective and relatively simple procedure. The concerns that fenestration via a laparoscopic approach may be inferior to open surgery are probably outdated. Versatility in the use of modern and emerging technology is recommended to minimize the incidence of perioperative complications and recurrences. It is reasonable and timesaving to use staplers as an adjunct to ultrasonic excision of thick cystic walls. Indocyanine green fluorescence with a single intravenous bolus prior to the laparoscopic procedure may further enhance the safety of the procedure.

Declarations

Conflict of interest

A. Kersik, L. Galassi, G. Colombo and L. Bonavina declare that they have no competing interests.

Ethical standards

All procedures performed in studies involving human participants or on human tissue were in accordance with the ethical standards of the institutional and/or national research committee and with the 1975 Helsinki declaration and its later amendments or comparable ethical standards. Informed consent was obtained from all individual participants included in the study. Internal review board approval: HSD 2023-011.
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Metadaten
Titel
Laparoscopic deroofing of simple liver cysts: do ancillary techniques, surgical devices, and indocyanine green improve outcomes?
verfasst von
Alessia Kersik, MD
Luca Galassi, MD
Giulia Colombo, MD
Prof. Luigi Bonavina, MD
Publikationsdatum
18.04.2023
Verlag
Springer Vienna
Erschienen in
European Surgery / Ausgabe 3-4/2023
Print ISSN: 1682-8631
Elektronische ISSN: 1682-4016
DOI
https://doi.org/10.1007/s10353-023-00798-8

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