Imperforate Hymen and Mucometra.
Congenital imperforate hymen is rare in cattle. The complete blockage results in accumulation of uterine and cervical secretions and formation of mucometra, mucocervix, and mucovagina . Note the corpus luteum. Cows and heifers with mucometra or hydrometra generally cycle normally in contrast to cows with pyometra that are anestrous for long periods of time. [the size of the square tile is 15 cm].
Roberts SJ (1986)