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Perineal swelling secondary to a vaginal wall cyst in a bitch in dioestrus
  1. Cesar Sanchez Jimenez,
  2. Ana Rita Ramalho Furtado,
  3. Valéria Café Marçal,
  4. Darren Barnes and
  5. Emilie Fauchon
  1. Dick White Referrals, Six Mile Bottom, United Kingdom
  1. Correspondence to Cesar Sanchez Jimenez; sajimces{at}


Vaginal cysts are a rare pathology of the female reproductive tract and are usually asymptomatic and often incidental in human and veterinary medicine. A seven-year and 11-month-old intact female bearded collie was referred for further investigations of a two-and-a-half-week history of a slow-growing perineal swelling that was noticed three to four weeks following oestrus. Ultrasound and CT images were acquired, which revealed that an intravaginal cystic mass was the cause of the aforementioned swelling. Following removal of the mass, histopathology revealed a fully excised vaginal cyst lined by simple cuboidal periodic acid-Schiff-positive epithelium most consistent with paramesonephric (Müllerian) origin. To the authors’ knowledge this is the first reported case of an extra-abdominal vaginal wall cyst in a bitch in dioestrus causing perineal swelling.

  • computed tomography (CT)
  • ultrasonography
  • reproduction
  • vaginal cyst
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  • Contributors Each author has contributed to the manuscript. CSJ and ARRF wrote the manuscript. DB obtained patient consent, managed the case and reviewed the manuscript. VCM obtained the histological images and reviewed the manuscript. EF obtained the images, reviewed and coordinated the manuscript.

  • Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

  • Competing interests None declared.

  • Provenance and peer review Not commissioned; externally peer reviewed.

  • Data availability statement The datasets analysed during the current study are available from the corresponding author on reasonable request.

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