Labia

Elongation and duplication of the labia minora are relatively common.
Papillomatosis is a benign, usually asymptomatic condition of the labia characterized by multiple small papillary projections covering the vestibule and labia minora. These papillae are usually symmetrically distributed and bear no relationship to genital warts.

Vaginal vestibule and perineum

The size of the vaginal opening and the length of perineum differ among various women.

A woman with a narrow vaginal introitus and a short perineum (mid vaginal to mid rectal dimension of less than 4.5 cms), has a higher chance of developing introital dyspareunia secondary to vulvar vestibulitis syndrome.

Hymen

Congenital hymeneal opening variations can vary. Partial embryonic canalization of the hymen can result in a cribriform hymen, whereas complete absence of canalization results in an imperforate hymen. Imperforate hymen is rare, and is usually diagnosed after menarche, when the patient develops severe pelvic pain secondary to menstrual retention. Imperforate and severely narrowed hymens require surgical incision or excision of the hymen.