Classical signs of inflammation (heat, redness, swelling, painful)
Staph most common cause
Inc PMNs (neutrophils) with intraductal and periductal inflammation
Due to a fissure in the skin from breastfeeding that allows for infection of underlying breast.
Often due to Staphylococcus aureus or streptococci (Strep often produces diffuse cellulitis)
Usually mom comes in a month after starting breastfeeding with an irritated, inflamed breast.
Can form a firm mass in breast (DDx: CANCER!)
Typically unilateral (affecting the side used for breastfeeding)
If untreated with antibiotics, infection can spread or an abscess can form. (see abscess for more details)
Lots of neutrophils
Abscess formation= organization with fibrous scar formation around area of infection/neutrophils/pus etc
RULE OUT INFLAMMATORY CARCINOMA OF THE BREAST!!!