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Updated: Aug 9, 2026
07:04
A Novel Use of Three-dimensional High-frequency Ultrasonography for Early Pregnancy Characterization in the Mouse
Published on: October 24, 2017
Hysterographic double-outlined uterine cavity: a sign of unsuspected pregnancy
AJR. American Journal of Roentgenology
|August 1, 1978
Abstract:
A review of three hysterograms inadvertently performed during early pregnancy reaffirms the regular appearance of infiltration of aqueous opaque media into the substance of the decidua, producing the sign of the double-outlined uterine cavity. Although such endometrial opacification may also occur during the late secretory phase, its recognition should arouse suspicion of pregnancy. A coexisting intrauterine filling defect may then be more confidently diagnosed as an amniotic sac.
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