Dilation is a procedure to open and widen the cervix. The cervix is the entrance to the uterus. Curettage is the removal of the lining of the uterus by scraping. The lining is known as the endometrium. The two procedures are done together and are often referred to as a D&C.

Dilation and Curettage
dilation and curretage
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A D&C is usually done to determine what condition is causing abnormal bleeding. Some conditions that may cause abnormal bleeding are:

Sometimes a D&C is done to stop the bleeding, rather than to diagnose why you are bleeding. For example, this procedure may be done to remove products of conception (eg, tissue from the fetus or placenta) or to treat bleeding that has not responded to other methods.

A D&C is not done if you have an infection (eg, affecting the uterus or fallopian tubes).