Article

Fibromatosis mamaria, diagnóstico diferencial del carcinoma invasor. Reporte de un caso

Centro de Imagenología; Servicio de Anatomía Patológica; Servicio Ginecología y Obstetricia. Hospital Clínico Universidad de Chile, Santiago, Chile
DOI: 10.4067/S0718-40262009000400012

ABSTRACT Breast fibromatosis. Report of one case Desmoid tumors or fibromatosis, a rare lesion of the connective tissue, corresponds to 0.2% of breast tumors. It does not metastasize but has high local recurrence rates due to margin infiltration. The clinical presentation and imaging is almost indistinguishable from breast carcinoma. Diagnosis is histological and the treatment of choice is surgical excision. We report a 31 years old woman consulting for skin retraction in right breast, without previous history of trauma or surgery. Breast ultrasound showed an irregular nodule that extended into the skin. The mammogram showed a discrete retraction of the skin and increased density of adjacent subcutaneous tissue. An ultrasound guided percutaneous biopsy showed stromal fusocelular proliferation, suggesting a phyllodes tumor. A partial mastectomy was performed and the pathological study of the surgical piece showed a mesenchymal proliferation with infiltrative borders, consistent with breast fibromatosis.

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