Preoperative MRI in women with newly diagnosed breast cancer: re-excision rates and additional findings

• AbstractBackground: Preoperative breast magnetic resonance imaging (MRI) is still controversial as an adjunct to conventional breast cancer workup in terms of the effect on re-excision rates. Our objective was to analyse whether the introduction of preoperative breast MRI influences the rate of re-excisions in women with newly diagnosed breast cancer and to study the additional ipsi- and contralateral MRI findings and their impact on surgical management.Methods: Women with newly diagnosed breast cancer having preoperative MRI and surgery at Vastmanland County Hospital Breast Unit from January–June 2018 (n = 84) were compared with women not undergoing preoperative MRI from January–June 2016 (n = 97). Data were collected from retrospective reviews of patients’ medical records.Results: The re-excision rate was one of 84 (1.2%) in 2018 and three of 97 (3.1%) in 2016. There was no statistically significant difference in re-excision rates between the two study periods. In the MRI cohort, seven patients of 84 (8%) had malignancy in the ipsilateral and two (2%) in the contralateral breast not previously detected by conventional imaging. Additional malignant findings were more common in women of age < 59 years, and more often resulted in mastectomy.Conclusions: Preoperative breast MRI in women with newly diagnosed breast cancer did not reduce the number of re-excisions. Additional malignant findings were more common in women younger than 59 years and influenced surgical management. MRI resulted in no delay of surgery.

Nyckelord

Breast cancer

MRI

re-excisio

Oncology

Onkologi

Kirurgi

Surgery

Radiology

Radiologi

Publikations- och innehållstyp

vet (ämneskategori)

ovr (ämneskategori)