This disease results from penetration of infection into the uterine cavity and thence to the uterine walls. During the acute stage the inflammation is not infrequently attended with pyrexia, hemorrhages and subsequently, sanguineous discharges. Examination shows the uterus to be some what enlarged (Edematous) and painful. During this stage the patient requires rest, application of ice to the abdomen, antibiotics and sulfa drugs, and, subsequently, suitable anti-inflammatory measures, depending on the course of the disease.  Source: A.Kaplan 
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