The Effect of the Timing of Radiotherapy on Clinical and Patient-Reported Outcomes After Latissimus Dorsi Breast Reconstruction: A 10-Year Study

Immediate Latissimus Dorsi and Prosthetic Reconstruction in the Setting of Postmastectomy Radiation: An Analysis of 376 Breast Reconstructions

BACKGROUND

In immediate breast reconstruction, the plastic surgeon must strive to create an aesthetically pleasing result while minimizing complications. The latissimus dorsi (LD) myocutaneous flap has long been used a workhorse flap in breast reconstruction. Often times, it is used a salvage flap after other methods of breast reconstruction have failed. In this study, we review the use of this flap in conjunction with prosthetic devices, regardless of the need for adjuvant radiation, to determine the safety and efficacy of this approach as a primary method of reconstruction.

METHODS

A single surgeon practice with a standardized reconstructive algorithm was reviewed. This compromises a 2-stage approach involving the use of LD myocutaneous flaps and tissue expanders for immediate reconstruction after mastectomy, followed by exchange for implants at a secondary surgery. A retrospective chart review was performed on 201 patients (376 breast reconstructions) who met inclusion criteria. Patient demographics and outcomes were compared based on radiation status. The primary outcome, reconstructive success, was defined as no need for further autologous reconstruction beyond the 2-stage approach utilized.

RESULTS

Statistical analysis was performed on both patient demographics, complications, and reconstructive outcomes. Demographics were equivalent between the 2 groups. When analyzing complications and outcomes, there was no difference between nonradiated patients and radiated patients except when looking at reconstructive loss, which was 3.6% in the nonradiated group and 16.6% in the radiated group (P = 0.03). However, one third of the patients in the radiated group who had reconstructive losses were due to reasons not related to radiation therapy. Taking this into account, overall reconstructive success showed no statistical significance between the 2 groups.

CONCLUSIONS

The findings from this study show that immediate reconstruction with LD myocutaneous flaps in conjunction with prosthetic devices is a reliable and safe option, even in the setting of adjuvant radiation therapy, as the autologous tissue mitigates many sequelae of radiation therapy. Not only does this type of reconstruction provide an aesthetically pleasing result in 2 stages, but also has a favorable complication profile and success rate.

International multidisciplinary expert panel consensus on breast reconstruction and radiotherapy

BACKGROUND

Conflicting evidence challenges clinical decision-making when breast reconstruction is considered in the context of radiotherapy. Current literature was evaluated and key statements on topical issues were generated and discussed by an expert panel at the International Oncoplastic Breast Surgery Meeting in Milan 2017.

METHODS

Studies on radiotherapy and breast reconstruction (1985 to September 2017) were screened using MEDLINE, Embase and CENTRAL. The literature review yielded 30 controversial key questions. A set of key statements was derived and the highest levels of clinical evidence (LoE) for each of these were summarized. Nineteen panellists convened for dedicated discussions at the International Oncoplastic Breast Surgery Meeting to express agreement, disagreement or abstention for the generated key statements.

RESULTS

The literature review identified 1522 peer-reviewed publications. A list of 22 key statements was produced, with the highest LoE recorded for each statement. These ranged from II to IV, with most statements (11 of 22, 50 per cent) supported by LoE III. There was full consensus for nine (41 per cent) of the 22 key statements, and more than 75 per cent agreement was reached for half (11 of 22).

CONCLUSION

Poor evidence exists on which to base patient-informed consent. Low-quality studies are conflicting with wide-ranging treatment options, precluding expert consensus regarding optimal type and timing of breast reconstruction in the context of radiotherapy. There is a need for high-quality evidence from prospective registries and randomized trials in this field.

Patient-Reported Satisfaction Following Radiation of Implant-Based Breast Reconstruction

Background

Little is known with regard to patient-reported outcomes (PROs) in the setting of implant-based reconstruction (IBR) with post-mastectomy radiation therapy (PMRT).

Methods

We identified patients who underwent immediate IBR from a prospectively compiled database. The Breast Reconstruction Satisfaction Questionnaire (BRECON-31) was scored and compared between patients with and without PMRT.

Results

Sixty-four women met the study criteria. Forty-eight did not receive PMRT and 16 did. Nine women had an unanticipated indication for PMRT. The PMRT group was similar to the control group with regard to baseline characteristics (ie, age, marital status, body mass index, tobacco use, and comorbidities). However, treatment and oncologic characteristics (eg, diagnosis, tumour characteristics, systemic therapy use) differed. Of all complications, only capsular contracture rates differed (1.2% vs 13%; P = .01). Of the 9 subscales, 7 showed no difference in satisfaction between the groups. Radiated women scored lower in the arm concerns and breast appearance subscales. Scores were similar whether the indication for PMRT had been anticipated or not.

Discussion

Women with immediate IBR scored similarly to their nonradiated counterparts across 7 of 9 domains of satisfaction. Arm concerns and breast appearance scores are lower with PMRT, likely secondarily to more extensive nodal procedures in higher stage patients and to the side effect profile of radiotherapy. Our findings are in line with the few available studies using other PRO tools to evaluate the impact of PMRT on patient satisfaction and studies objectively measuring the effect of PMRT on arm morbidity and cosmetic outcomes.