What Is the Difference Between Uterine Curettage and Induced Abortion?
Dec 28, 2021
Source: Cainiu Health
Dr. Liu Xiuyan
Introduction
Induced abortion is performed for pregnancies up to 14 weeks’ gestation. Vacuum aspiration is suitable for pregnancies up to 10 weeks’ gestation, whereas dilation and curettage (D&C) may be performed for pregnancies between 10 and 14 weeks’ gestation. Curettage of the uterine cavity refers to the removal of pathologically present intrauterine tissue—such as retained products of conception following spontaneous or induced abortion, retained placental or fetal membrane tissue after delivery, hydatidiform mole, uterine polyps, or hyperplastic endometrial tissue—using either vacuum aspiration or D&C.
We know that induced abortion is a highly invasive surgical procedure, and curettage (also known as “D&C”—dilation and curettage) is likewise a high-risk intervention. Although both procedures involve uterine instrumentation, they differ significantly in purpose and indication.
What Are the Differences Between Curettage and Induced Abortion?
Different Patient Populations
Induced abortion is performed on women with pregnancies up to 14 weeks’ gestation: vacuum aspiration is typically used for pregnancies ≤10 weeks, while dilation and evacuation (D&E) or sharp curettage may be employed for pregnancies between 10 and 14 weeks. In contrast, curettage refers to the removal of pathologic intrauterine tissue—such as retained products of conception following spontaneous or induced abortion, retained placental or fetal membranes after delivery, hydatidiform mole, endometrial polyps, or hyperplastic endometrial tissue—using either vacuum aspiration or sharp curettage.
Different Surgical Objectives
Induced abortion serves as a contraceptive failure intervention or a medically indicated termination when continuation of pregnancy is contraindicated. Curettage, however, aims specifically at removing pathologic intrauterine tissue; it thus functions both therapeutically and diagnostically—since the retrieved tissue can be sent for histopathological examination to confirm diagnosis. Regarding procedural difficulty: induced abortion generally targets fresh, developing embryonic tissue and is relatively straightforward, especially when performed early in gestation (i.e., lower gestational age correlates with lower procedural risk). Curettage, by contrast, often involves adherent or abnormal residual tissue, increasing technical difficulty; complete removal may not always be achieved in a single session, and hysteroscopic guidance may sometimes be required.
Additionally, following an uncomplicated induced abortion, intact chorionic villi are usually visualized, and routine postoperative follow-up typically consists of a transvaginal ultrasound after the next menstrual period has ended and flow has ceased. For curettage, however, ultrasound follow-up is generally recommended within one week—or at most two weeks—postoperatively to promptly detect and manage any residual tissue.
We hope this information is helpful. Wishing you good health and happiness!
