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Peer-reviewed veterinary case report

Dog with giant parovarian cyst and ovarian tumor causing estrus

By Kim, Hyejin et al.·Published in The Journal of veterinary medical science·2012·Haemaru Referral Animal Hospital, South Korea·View original on PubMed

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Original publication title: A giant parovarian cyst in a dog with a granulosa cell tumor.

Species:
dog

Plain-English summary

A 13-year-old female poodle was brought in because she was showing signs of being in heat for an unusually long time. An ultrasound revealed a large cyst near her ovary, which was identified as a giant parovarian cyst, and a mass on her right ovary was diagnosed as a granulosa cell tumor. The tumor was producing excess estrogen, which likely caused the cyst to grow quickly. Treatment options would typically involve surgery to remove the tumor and cyst, which could help resolve the symptoms.

People also search for: dog in heat for too long · poodle ovarian tumor treatment · giant cyst in dog abdomen

Abstract

A 13-year old intact female poodle showed persistent signs of estrus. Ultrasonographically, a large cystic mass containing echogenic fluid with a thin wall was observed, and it was 8 cm in diameter. The cystic mass was located at the mesovarium between the left ovary and uterine horn, and it was identified as a giant parovarian cyst. A right ovarian mass was histologically diagnosed as a granulosa cell tumor. Persistent estrogen hormone secretion by the granulosa cell tumor was thought to cause a rapid increase in the size of the parovarian cyst. This rare cystic mass originated from the genital system and was differentiated from the uterus.

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Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/22067081/