PYOVAGINA AND STUMP PYOMETRA IN A NEUTERED XX SEX REVERSED BEAGLE - ACASE-REPORT

An 18-month-old, neutered male beagle presented with acute abdominal s igns and a suppurative infection of the urogenital tract. Chromosomal sex was female (78, XX), gonadal sex was male (testicles), and phenoty pic sex was ambiguous, with evidence of both male and female duct syst ems. The internal and external genitalia consisted of epididymides, an underdeveloped uterus with an immature spermatic cord, communication between the uterus or cranial vagina and the membranous urethra, a ure thrographically male urethra, a hypoplastic os penis, and a hypoplasti c penis with hypospadia. Based on these findings and the familial hist ory of a similarly affected litter mate, the dog was diagnosed as havi ng the XX male syndrome with pyovagina and uterine stump pyometra. Rad iographic and ultrasonographic investigations are described, and abnor malities of chromosomal sex, gonadal sex, and phenotypic sex are discu ssed.