Mammary myofibroblastoma


Mammary myofibroblastoma is a rare, benign tumor of the breast.

Symptoms

These tumors are painless masses that manifest as breast lumps and may be found on a mammogram.

Diagnosis

The diagnosis is based on examination under a microscope, by a pathologist. Radiologic findings may be suggestive, as these tumors are well-circumscribed and devoid of calcifications.

Pathology

Myofibroblastoma of the breast, first described by Wargotz et al. consist of bland spindle cells arranged in fascicles with interspersed thick bundles of. They typically stain with CD34 and desmin.
In extra-mammary sites the tumour is known as a mammary-type myofibroblastoma, and may immunohistochemically and histomorphologically overlap with spindle cell lipoma.

Treatment

Mammary myofibroblastomas are cured if completely excised.