Here are some case studies of imperforated hymens...
http://pediatrics.aappublications.or...full/108/3/e53
Pictures:
http://healthystrokes.com/hymengallery.html Yes, these are not "pretty pics" but rather ones which illustrate what any woman may look like--describing the abnormal v. normal.
There is a question if it is congenital or if it is secondary to sexual abuse and possible adhesion's. Learn new "stuff" each day!
Additionally, I despise the slang of "Popping the cherry"!