Congenital cysts of the vagina in the newborn infant are single cysts about ½ to ¾ in. in diameter located at the introitus of the vagina. They usually arise (Fig. 1) from the anterior wall and may extend on to the lateral wall. They are posterior to the urethra and anterior to the hymenal orifice and may give the appearance of a urethrocele.
Vaginal cysts of the newborn infant are said to be "not uncommon".1 The accuracy of this statement is questionable, since most pediatric textbooks make no mention of the condition and experienced pediatricians and obstetricians have not seen a single case. Recently five newborn infants with cysts of the vagina were observed; three at Lebanon Hospital, one at Harlem Hospital (Fig. 2), and one at Jewish Memorial Hospital. All of them occurred in otherwise full-term normal infants. The pregnancy of each of the mothers of these children