Cases of this kind have been described in mare and cow, preventing
copulation and conception, and leading to a distension of the vagina,
with a glairy fluid, which obstructed defecation, irritated the bladder
and caused violent but fruitless straining, under which the mass would
project from the vulva. The centre of the swelling may be penetrated
with a trochar or bistuory and enlarged by incisions in several
directions. Relief is prompt and lasting.