(A) causes of morbidity

1. Bacterial pathogen invasion of the disease, most of a small number of Staphylococcus aureus bacteria Streptococcus rupture from the nipple or areola skin chapped at entered along the lymphatic spread to the mammary gland lobules and interlobular fat and fibrous tissue, causing breast Acute suppurative cellulitis were also a few cases of post-partum complications occurring in other parts of the bacterial infection spread to the breast blood circulation caused by disease (Figure 1)

 

2. Siltation milk milk are beneficial to the propagation of invasive bacteria milk siltation reasons: â‘  nipple retraction is too small, or has failed to correct the pre-baby breast pump so that the difficulties can not even breast-feeding â‘¡ incomplete emptying of maternal milk is not too much about excess milk secretion of milk can not be discharged in time to retain in the internal mammary duct obstruction â‘¢ breast milk to make exclusive control their own difficulties, such as inflammatory breast cancer and external pressure can affect the normal breast-feeding

3. Chapped nipple after giving birth mothers failed to master the right skills or breast-feeding babies with sucking abnormal or excessive use of soap in the nipple or ethanol desiccant like stimulants and infant oral motor function disorders caused by chapped nipple so that bacteria a small gap along the nipple and through the lymphatic invasion of the skin and the milk to reach intergovernmental organization formed by infection of leaves chapped nipple pain when breastfeeding can not make sufficient milk suction-induced siltation of the milk to create breeding conditions for the invasion of bacteria

(B) the pathogenesis of

Siltation and bacteria invade the milk acute mastitis are two important factors are reported in the literature about 40% of the normal maternal milk containing Staphylococcus aureus and Staphylococcus white exists but does not cause the early onset of acute mastitis-prone with their maternal milk contains more number of detached epithelial cells and tissue debris caused by duct obstruction of duct obstruction on the vitality of breast tissue can reduce the deposition of the decomposition products combined with milk to make it more conducive to bacterial growth and reproduction to become a good medium of bacteria has also been reported breast-feeding with the breast pump to milk after the exhaustion of its prevalence rate than breast milk after the incidence of non-exhaustion can be a low one-fold

The incidence of acute mastitis in general experience of the process of duct inflammation mastitis and mastitis three stages of bacterial invasive lobular gland duct upstream to remain in the stagnant growth and reproduction of the product of milk duct leading to an acute inflammation of mammary gland and then spread to the real cause substantial mastitis bacteria can also be chapped from the nipple at the epithelial damage along the lymphatic vessels to the breast interstitial interstitial mastitis caused by this stage, treatment is delayed or improper treatment of inflammatory breast in real terms ie beyond the fat and fibrous tissue proliferation can lead to acute Mastitis inflammation limited to the size of liquefaction necrosis ranging from Gan Ranzao mutual integration of the formation of breast abscess; if the abscess, perforation of the breasts, the gap is formed when the loose connective tissue after breast abscess (Figure 2)

 

Pathological examination showed swelling of the skin flushing breast incision is sometimes seen after the formation of abscess was a single room or a multi-room display of microscope: In the breast tissue is visible at the same time a large number of neutrophil infiltration may be associated with abscess formation and sometimes inflammation involving only the one or several adjacent breast lobules