Actinomycosis of the Breast in Pregnancy - Revista Brasileira de Ginecologia e Obstetrícia

Actinomycosis of the breast is a rare inflammatory disease that has been infrequently reported. It can be primary actinomycosis of the breast, when caused by lesions of the mammary skin and secondary, when there is thoracic or pleural infection; it has extremely variable clinical presentations and may simulate mastitis and malignancies such as inflammatory carcinoma. The diagnosis is confirmed by culture and by finding typical actinomycotic colonies. The usual treatment is surgical drainage and intravenous and oral long-term administration of antibiotics. The authors present a case of actinomycosis of the breast in a 12-week pregnant woman who presented a tumor in the left breast.