Korean J Pathol.  2005 Apr;39(2):137-139.

Fibromatosis of the Breast: A Case Report

Affiliations
  • 1Department of Pathology, Chonnam National University Medical School, Gwangju, Korea. jshinlee@hanmail.net

Abstract

Fibromatosis of the breast is a rare tumor. We describe here a case of mammary fibromatosis in a 37-year-old woman. The mass from the right breast was 3 cm at the greatest dimension. The lesion was poorly circumscribed, firm and white-gray on the cut surface. Histologically, the lesion infiltrated into the lobules of the breast, and the tumor was composed of relatively uniform fibroblasts and collagen. Neither mitotic activity nor cellular atypia was seen. On the immunohistochemistry, the cells were positive for vimentin and they were focally positive for smooth muscle actin. Staining results for estrogen receptor and progesterone receptor were negative.

Keyword

Breast neoplasm; Fibromatosis

MeSH Terms

Actins
Adult
Breast Neoplasms
Breast*
Collagen
Estrogens
Female
Fibroblasts
Fibroma*
Humans
Immunohistochemistry
Muscle, Smooth
Receptors, Progesterone
Vimentin
Actins
Collagen
Estrogens
Receptors, Progesterone
Vimentin
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