A. Paget’s disease
B. Cystosarcoma phylloides
C. Mondor’s disease
Mastitis (also called mammitis) is inflammation of breast or udder tissue usually due to infection. Staphylococcus aureus is the most common pathogen responsible, but S. epidermidis and streptococci are occasionally isolated as well.
Mastitis can be classified as milk stasis, non-infectious or infectious inflammation and abscess. It is impossible to correlate this classification with clinical symptoms. In particular, milk stasis, non-infectious and infectious inflammation can be distinguished only by leukocyte count and bacteria culturing. Symptoms like fever, intensity of pain, erythema or rapid onset of symptoms can not be used to distinguish these.