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Arcuate uterus

An arcuate uterus is one of the Müllerian duct anomalies and the anomaly that is most commonly not associated with reproductive failure. It is sometimes classified as a normal variant.

Pathology

An arcuate uterus is characterized by a mild indentation of the endometrium at the uterine fundus. It occurs as the result of near complete resorption of the uterovaginal septum.

It can be distinguished from a bicornuate uterus on the basis of its complete fundal unification.

Radiographic features

General features include:

Hysterosalpingogram

Opacification of the endometrial cavity demonstrates a single uterine canal with a broad saddle-shaped indentation of the uterine fundus.

Pelvic ultrasound

A normal external uterine contour is noted, with a broad smooth indentation on the fundal segment of the endometrium. No division of the uterine horns.

MRI

A normal external uterine contour is maintained. The myometrial fundal indentation is smooth and broad, and the signal intensity of this region is iso-intense to normal myometrium.


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Abdominal and pelvic anatomy

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