Abstract
SummaryThe case report in this issue by Witte et al. (2012) is a description of an uncommon case of a short (3 cm) congenitally incompetent cervix associated with a pneumouterus in a 5‐year‐old maiden Quarter Horse mare with a normal 64 XX karyotype. Serial ultrasonographic examinations showed active ovaries of normal size with regular follicular activity.The causes of congenital cervical abnormalities may be multifold. Congenital abnormalities of the cervix may be related to sporadic accidents of development, chromosomal factors, genetic abnormalities and environmental effects on phenotype. The clinician is presented with the equid's phenotype and must be familiar with the usefulness of determining the gonadal sex, sex hormone levels, cytogenetic sex and pedigree analysis.
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