Abstract
We report 4 cases of granulomatous mastitis, one of which showed Corynebacterium Kroppenstedtii infection. Case 1 : A 38-year-old woman presented with a mass measuring 3.8×3.0 cm in the upper outer quadrant of her left breast. The histological diagnosis was granulomatous mastitis. Treatment with antibiotics and steroids was not effective. Finally, surgical abscess drainage was performed. Case 2 : A 36-year-old woman presented with mass measuring 3.0×2.5 cm in the upper half of her left breast. A diagnosis of granulomatous mastitis was made, and she had no complaints during the follow-up period. Case 3 : A 39-year-old woman presented with a mass measuring 4.2×4.0 cm in the inner half of her right breast. The histological diagnosis was granulomatous mastitis. Treatment with antibiotics was not effective. Finally, surgical abscess drainage was performed. Case 4 : A 34-year-old woman presented with a mass measuring 2.0×2.0 cm in the upper inner quadrant of her right breast. Cytologic examination showed no malignant cells, and the histological diagnosis was granulomatous mastitis. Polymerase chain reaction (PCR) analysis revealed kroppenstedtii infection, and the patient was successfully treated with minomycin.
