Randomised controlled study of seroma rates after mastectomy with and without quilting the skin flap to pectoralis muscle

Seroma formation after mastectomy: A systematic review and network meta-analysis of different flap fixation techniques

Flap fixation is the most promising solution to prevent seroma formation after mastectomy. In this systematic review with network meta-analysis (NMA), three different techniques were compared. The NMA included 25 articles, comprising 3423 patients, and revealed that sutures are superior to tissue glue in preventing clinically significant seroma. In addition, running sutures seemed to be superior to interrupted sutures. An RCT comparing these suture techniques seems necessary, given the quality and nature of existing literature.

Quilting Suture Technique After Mastectomy: A Meta-Analysis

BACKGROUND

There is no level 1a evidence testing quilting suture (QS) technique after mastectomy on wound outcomes. The aim of this systematic review and meta-analysis evaluates QS and association with surgical site occurrences as compared to conventional closure (CC) for mastectomy.

METHODS

MEDLINE, PubMed, and Cochrane Library were systematically searched to include adult women with breast cancer undergoing mastectomy. The primary endpoint was postoperative seroma rate. Secondary endpoints included rates of hematoma, surgical site infection (SSI), and flap necrosis. The Mantel-Haenszel method with random-effects model was used for meta-analysis. Number needed to treat was calculated to assess clinical relevance of statistical findings.

RESULTS

Thirteen studies totaling 1748 patients (870 QS and 878 CC) were included. Seroma rates were statistically significantly lower in patients with QS (OR [95%CI] = .32 [.18, .57]; P < .0001) than CC. Hematoma rates (OR [95%CI] = 1.07 [.52, 2.20]; P = .85), SSI rates (OR [95%CI] = .93 [.61, 1.41]; P = .73), and flap necrosis rates (OR [95%CI] = .61 [.30, 1.23]; P = .17) did not significantly vary between QS and CC.

CONCLUSION

This meta-analysis found that QS was associated with significantly decreased seroma rates when compared to CC in patients undergoing mastectomy for cancer. However, improvement in seroma rates did not translate into a difference in hematoma, SSI, or flap necrosis rates.

Technical aspects of flap fixation after mastectomy for breast cancer: Guidelines for improving seroma-related outcome

OBJECTIVES

Previous studies have identified the added value of flap fixation in reducing seroma formation and its sequelae after mastectomy. The seroma reduction after mastectomy (SAM)-trial proved that sutures were superior to tissue glue. In this article, we will elaborate on the results of the SAM-trial to provide a clear surgical guideline.

METHODS

All patients in the suture flap fixation cohort from the SAM-trial were analyzed if details regarding flap fixation were available. The most optimal number of sutures was determined using a receiving operator characteristics curve. The incidence of seroma formation between patients receiving the most optimal number of sutures and patients receiving fewer sutures was compared.

RESULTS

The most optimal number of sutures proved to be 15. Patients with ≥15 sutures had a lower incidence of seroma formation at every time frame during follow-up. There was a significant difference at 6 weeks (odds ratio [OR]: 3.05, 95% confidence interval [CI]: 1.09-8.56), 3 months (OR: 4.62, 95% CI: 1.34-12.92), and 1 year postoperatively (OR: 20.48, 95% CI: 2.18-192.22). Ten days and 6 months postoperatively did not differ significantly.

CONCLUSIONS

Flap fixation in general, but also the surgical technique influences the incidence of seroma formation after mastectomy. Results suggest a minimum of 15 sutures, spaced approximately 3.7 cm apart.