Comparison of skin-sparing mastectomy using LigaSure™ Small Jaw and electrocautery
© The Author(s). 2017
Received: 5 January 2017
Accepted: 4 July 2017
Published: 14 July 2017
Skin-sparing mastectomy (SSM) is increasingly used in patients with breast cancer. We compared the differences between use of electrocautery and LigaSure™ Small Jaw in patients with breast cancer who underwent SSM.
Between January 2012 and December 2015, 81 patients with breast cancer who underwent SSM were selected and were divided into the electrocautery group and the LigaSure™ Small Jaw group based on the devices that were used. Clinicopathological characteristics, body mass index, operative time, and weight of removed breast were obtained from medical records. Total amount and days of drain use, until removal, and postoperative skin necrosis, requiring debridement, were also analyzed.
The study population consisted of 50 patients in the electrocautery group and 31 in the LigaSure™ Small Jaw group. The latter group has significantly shorter operative time (117.5 ± 16.9 vs. 104.0 ± 23.6 min, P = 0.004). The mean total volume of drainage was less (805 ± 278 vs. 694 ± 131 mL, P = 0.017) and mean duration of drainage was also significantly shorter in the LigaSure™ Small Jaw group (11.3 ± 2.5 vs. 10.1 ± 2.0 days, P = 0.029).
The use of LigaSure™ Small Jaw during skin-sparing mastectomy shortened the operative time and duration of drainage and reduced the total volume of drainage.
KeywordsSkin-sparing mastectomy Energy devices Electrocautery LigaSure™ Small Jaw
Skin-sparing mastectomy (SSM), including nipple-sparing mastectomy (NSM), has emerged as an alternative to standard mastectomy and is known to be oncologically safe, with improved cosmetic results and quality of life for patients with breast cancer [1–3]. Because of this, SSM has become increasingly more common in recent years and the inclusion criteria have also been expanded . However, SSM is technically more difficult and time consuming, since it has to be performed through a smaller incision than that used in standard mastectomy.
Electrocautery is the most commonly used surgical device for dissection and hemostasis in standard mastectomy; however, its wide thermal spread may lead to flap necrosis, wound infection, and prolonged drainage . Moreover, electrocautery in SSM may not control minor bleeding properly since the operative view is limited. Some studies showed that an electrothermal bipolar vessel-sealing system could shorten the operative time and decrease blood loss and drainage volume as compared to the results with electrocautery [6, 7].
To the best of our knowledge, few studies have compared the use of electrocautery and LigaSure™ Small Jaw in breast cancer patients undergoing SSM. Thus, this study aimed to compare intraoperative and postoperative outcomes using conventional electrocautery and LigaSure™ Small Jaw in patients undergoing SSM.
The skin incision was made with a conventional scalpel, and subcutaneous tissue flaps were raised. The flaps were elevated to the level of the clavicle, superiorly; to the edge of the sternum, medially; to the thoraco-abdominal aponeurosis, inferiorly; and to the edge of the latissimus dorsi muscle, laterally. The dissection was continued until a complete margin of pectoral muscle and fascia bordered the superior portion of the field. Subfascial dissections were performed over the pectoralis major and over the breast, using each device.
Operative time was calculated (in minutes) from the initial skin incision to the end of bleeding control after breast removal in all cases. The total amount and days of drainage until removal and the weight of removed breast tissue were obtained from medical records. The drains were removed when the volume was less than 20 mL/day. Body mass index (BMI) was also calculated to compare the two groups. Postoperative skin necrosis requiring debridement was also analyzed.
Data were analyzed using SPSS® Statistics (version 18.104.22.168; IBM Corp., Armonk, NY, USA). Continuous variables were presented as means with standard deviations, and categorical variables were presented as numbers with percentages. The t test was used to compare continuous variables, and categorical variables were compared using the chi-square or Fisher’s exact test to analyze the significance of differences. Differences were considered statistically significant at a P value of <0.05.
Patient and operative details
Comparison of patients and operative details between the two groups
(N = 50)
LigaSure™ Small Jaw group
(N = 31)
44.1 ± 7.5
46.4 ± 6.4
Body mass index
23.7 ± 3.3
22.7 ± 2.6
TNM stage, N (%)
Nipple-sparing mastectomy, N (%)
Weight of removed breast (gram)
350.3 ± 155.9
412.1 ± 164.7
Operative time (min)
117.5 ± 16.9
104.0 ± 23.6
Drainage and morbidity
Comparison of drainage and morbidity details between the two groups
(N = 50)
LigaSure™ Small Jaw group
(N = 31)
Total volume of drainage (mL)
805 ± 278
694 ± 131
Duration of drainage (days)
11.3 ± 2.5
10.1 ± 2.0
Skin necrosis, N (%)
Seroma, N (%)
Hematoma, N (%)
SSM requires more scrupulous surgical technique than conventional total mastectomy since the entire breast has to be removed through a small incision and the skin flap has to be protected from ischemia . Electrocautery is the most common device used in conventional total mastectomy, but this is known to be associated with complications such as hematomas, seromas, and prolonged drainage [11, 12]. When performing SSM, because subdermal vessels are not clearly seen, the use of electrocautery without vessel sealing could result in more frequent bleeding.
Use of the LigaSure™ Small Jaw has been studied in thyroid surgery and is known to shorten the operative time and reduce complications [13–15]. In breast surgery, several studies examined the use of LigaSure™ but employed the long type, which is used in endoscopic or open abdominal surgery [6, 7, 16]. Long-type LigaSure™ is good at sealing vessels but makes the operation inconvenient due to the longer distance from the patient. LigaSure™ Small Jaw is shorter than a previous device and could be very useful in breast surgery. This is the first report of the use of LigaSure™ Small Jaw in SSM.
Several previous studies on the use of tissue-sealing devices during conventional total mastectomy showed mean operative times comparable to those with use of electrocautery [17–19]. In contrast, our results suggested that patients in the LigaSure™ Small Jaw group had a shorter operative time than those in the electrocautery group. This might be due to reduced bleeding with sealing of subdermal vessels before dissection. In SSM, more time is needed to control a bleeding focus due to the small operative view compared with that in conventional total mastectomy; thus, reduction of bleeding could have influenced operative time in our study.
The present study showed that the use of LigaSure™ Small Jaw could significantly reduce total volume and duration of drainage in SSM. The reduction of drainage resulted from adequate sealing of lymphatics by electrothermal energy and pressure [18, 20]. We excluded patients who underwent ALND since volume and duration of drainage are easily affected, depending on whether ALND is performed. Nevertheless, we found that patients in the LigaSure™ Small Jaw group had a smaller volume and shorter duration of drainage, which might be because even subdermal lymphatics were properly sealed with this device.
The rate of flap necrosis is known to be decreased by the use of energy devices such as LigaSure™ or Harmonic® scalpel in conventional total mastectomy [18, 19, 21, 22]. Flap necrosis is associated with lateral thermal spread from the device used during the operation. Sutton et al. showed that electrocautery had the highest mean temperature and the widest thermal spread . Although our result presented no significant difference in skin necrosis requiring debridement, patients in the electrocautery group tended to experience more postoperative skin necrosis requiring debridement in our study (24 vs. 12.9%, respectively).
The limitations of our study include its retrospective nature, which has the potential for bias. Unequal numbers between the two groups and the small subject numbers could be insufficient to support our results. A selection bias was unavoidable since the choice of using LigaSure™ Small Jaw was made by the patient. LigaSure™ Small Jaw has been increasingly used in breast surgery since its approval of public insurance about 2 years ago. Despite the limitations, the results of this study have clinical significance and provide important insights into the use of LigaSure™ Small Jaw in SSM.
In conclusion, the use of LigaSure™ Small Jaw during SSM was associated with reduced operative time, total volume of drainage, and duration of drainage. Nevertheless, further prospective investigation is warranted to elucidate the association between operative devices and intraoperative/postoperative parameters in patients undergoing SSM.
No funding was received.
Availability of data and materials
The datasets supporting the conclusions of this article can be shared.
YWC and GSS designed the research. YWC and HSK collected data. YWC, SPJ, SUW, JBL, and JWB analyzed and interpreted the data. YWC wrote the manuscript. GSS provided critical revision. All authors read and approved the final manuscript.
Ethics approval and consent to participate
This retrospective study was approved by the Institutional Review Board of Korea University Medical Center, Ansan.
Consent for publication
The authors declare that they have no competing interests.
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