First Vacuum-Assisted Excision of a Breast Myofibroblastoma

Abstract EN

A 52-year-old lady was seen in the breast clinic after an 8 mm lesion was found in her left breast on screening mammogram.

Clinical examination was normal.

The left breast mammogram showed an 8 mm rounded density posteriorly in the inner half of breast and ultrasound also showed a 7 mm, well-defined ovoid echogenic lesion (R3, U3).

Biopsy confirmed the lesion was fibro-fatty tissue containing a diffuse infiltrate of lymphoid cells macroscopically (B3/4)—findings in line with a diagnosis of a myofibroblastoma.

A myofibroblastoma is a rare benign mesenchymal tumour comprising of spindle cells.

Most breast myofibroblastomas described in the literature have been excised by wide local excision.

In this patient’s case, a vacuum-assisted technique was discussed and suggested at the multidisciplinary meeting.

It was excised using ultrasound-guided Vacora® breast biopsy system.

The lesion was completely excised with the encore biopsy measuring 24×17 mm.

This is the first documented case of such a technique for the excision of a breast myofibroblastoma.

There still is uncertainty about breast myofibroblastomas, their aetiology, associations, and how they are best investigated.

Regarding management, vacuum-assisted technique, being less invasive and cheaper than local excisions, is adequate for small lesions.