The labia majora and the labia minora cover the vulval vestibule. These glands secrete mucus and a vaginal and vulval lubricant. The urogenital sinus of non-primates is homologous to the vulval vestibule of primates. To the left and right of the vulval vestibule are the labia minora. Structures opening in the vulval vestibule are the urethra, vagina, Bartholin's glands, and Skene's ducts. DR12 is associated with vulval lichen sclerosus, and undifferentiated spondyloarthritis. Cells differentiate from Pn cells to Pn.p cells to VP cells to vulval cells. Instead she focused on gynecology, specializing in vaginal and vulval conditions. Through the dorsal rim of the vulval vestibule passes the Fourchette piercing. The meatus is located on the glans of the penis or in the vulval vestibule. The urinary meatus is also included as it opens into the vulval vestibule. The second most common vulval cancer (though not very common) is vulval melanoma. There is progressive vulval swelling and some bleeding. Phallic and vulval forms dominate the arrangements (pitcher plants and orchids). Pelvic Congestion Syndrome, vaginal and vulval varices, lower limb varices are clinical sequelae.