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Journal of Ultrasound in Medicine, Vol 20, Issue 12 1277-1281, Copyright © 2001 by American Institute of Ultrasound in Medicine
Spectrum of normal intrauterine cavity sonographic findings after first-trimester abortion
I. Bar-Hava, S. Aschkenazi, R. Orvieto, T. Perri, J. Shalev, D. Dicker, Z. Ben-Rafael and A. Dekel
Department of Obstetrics and Gynecology Rabin Medical Center, Petah Tiqva, Israel.
OBJECTIVE: To characterize the sonographic appearance of the uterine cavity
after uncomplicated first-trimester abortion. METHODS: Women who underwent
uterine evacuation for first-trimester abortion were referred for
endovaginal sonographic examination within the week after the procedure.
Special attention was directed to characterizing the intrauterine cavity.
Demographic and clinical parameters were collected. A repeated
postmenstrual examination was carried out in selected cases. RESULTS: In
all, 57, 10, and 7 sonographic examinations were performed after
termination of pregnancy, incomplete (spontaneous) abortion, and missed
abortion, respectively. Fifty-seven (77%) of the 74 examinations showed
considerable amounts of intrauterine content with various echogenicities
(anteroposterior thickness range, 7-61 mm). No association could be
documented between the pattern of appearance and gravidity, parity,
gestational age, or type of abortion procedure. All postmenstrual
reevaluations of patients with excessive amounts of intrauterine material
at the initial examination (n = 7) showed empty intrauterine cavities.
CONCLUSION: Within the week after first-trimester abortion, the uterine
cavity is seldom empty. Thick heterogeneous material is an expected finding
after examination. By being familiar with this normal range of appearances,
clinicians can avoid unnecessary repeated invasive evacuation procedures. A
follow-up sonographic evaluation during the follicular phase of the next
menstrual cycle is recommended to confirm the absence of retained products
of pregnancy.
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