Classification of congenital uterine anomalies

Uterine morphology	Fundal contour	External contour
Normal	Straight / convex	Uniformly convex with indentation <10mm
Arcuate	Concave fundal indentation with central point of indentation at obtuse angle	Uniformly convex with indentation <10mm
Subseptate	Presence of septum that does not extend to the cervix, with central point at acute angle	Uniformly convex with indentation <10mm
Bicornuate	2 well-formed uterine cornua with a convex fundal contour in each	Fundal indentation >10mm dividing the 2 cornua