A ring-shaped configuration of the hymen in which the hymenal tissue extends completely around the circumference of the vaginal orifice, from 12-o’clock to 12-o’clock. Has also been referred to as a circumferential hymen.

A ring-shaped configuration of the hymen in which the hymenal tissue extends completely around the circumference of the vaginal orifice, from 12-o’clock to 12-o’clock. Has also been referred to as a circumferential hymen.
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