In my experiece I have performed staging of breast cancer by Ultrasound in the last 40 years and I had an overall rate of 1.3% of recurrences including new tumors in the same breast. Enzo Durante, Full Professor of General Surgery, International Breast Ultrasound School Secretary

No, usually there is no need to perform an MRI before surgery.

The ESMO Clinical Practice Guideline for Primary Breast Cancer 2013 (http://annonc.oxfordjournals.org/content/24/suppl_6/vi7.full.pdf) states:

Imaging includes bilateral mammography and

ultrasound of the breast and regional lymph nodes. The added

value of ultrasound is well proven. An MRI of the breast is not routinely recommended, but may be considered in cases of

familial breast cancer associated with BRCA mutations, breast

implants, for lobular cancers, before neoadjuvant chemotherapy

or when the findings of conventional imaging are inconclusive

such as positive axillary lymph node status with occult primary

tumour in the breast, suspicion of multifocality/multicentricity

(in particular in lobular breast cancer) and for evaluating

response to primary systemic therapy.

Also the Panel of the St. Gallen - Consensus Conference 2013 voted with 90% against routine-use of MRI in newly diagnosed disease.

I think, the precise imaging is necessary to recognize accurately the boundary of tumor and normal cells. but unfortunately, the MRI imaging has not ability to detect small tumor but the large tumor can be detected by MRI with high resolution.

No, routine MRI is not recommended before surgical resection of malignant breast

tumor.Bilateral X Ray mammography and ultrasound of breast and for in cases of clinically palpable lymph nodes is sufficient to correctly asses the pre-operative evaluation of breast .

  MRI is raccomanded before surgery of breast cancer for staging .

  In cases of metastases to axillary lymphnodes with normal mammography and sonography to see the primary

In cases of pathologic breast discharge with normal mammography.

 Women with  mutation in the BRCA1 gene or the BRCA2 .