Last updated: Monday, 20, December, 2010
Nipple discharge, pus - microscopy and culture when infection is thought to be present.
Staphylococcus aureus is the most likely pathogen, especially during lactation.
Pus, biopsy specimen - mycobacteria testing.
Breast carcinoma can present as an acute inflammatory process and mimic acute infection: FNAB, breast biopsy, if inflammation is unresponsive to treatment.See Breast lesion