Congenital absence of the right horn. Segmental aplasia of the paramesonephric duct. Both ovaries are present and functional. However, when ovulation occurs on the ovary unaccompanied by a horn the corpus luteum fails to regress due to lack of a uterine luteolysin. The right ovary displays an old scar after digital enucleation of the CL, per rectum, as a treatment aimed at terminating the anestrus. Unilateral ovariectomy can be used as a management approach.
Roberts SJ (1973)