Uterus unicornis in two mares

Brown, James A.; Hodder, Aaron D. J.; Benak, Jaromir; Liu, I K M; Ball, Barry A.

doi:10.1111/j.1751-0813.2007.00164.x

Cited by 10 publications

(6 citation statements)

References 3 publications

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“…Other published case reports describing uterus unicornis in cats, guinea pigs, horses and rabbits have also failed to describe normal oviduct tissue on the affected side. 11 – 15 Human literature describes unicornuate uteruses as having a single oviduct. 5 , 6 However, multiple case reports describing segmental uterine aplasia in cats have described bilateral presence of oviduct tissue.…”

Section: Discussionmentioning

confidence: 99%

Uterus unicornis and pregnancy in two feline littermates

Brookshire

Shivley

Woodruff

et al. 2017

Journal of Feline Medicine and Surgery Open Reports

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Case series summaryA queen, tom and four 1-year-old female offspring presented for routine neuter. Two of the littermates (cats 1 and 2) were diagnosed with a uterine abnormality during surgery. The left uterine horn of both cats appeared as a thin, solid, cord-like structure, whereas the right uterine horn of both cats appeared to have intermittent bulges consistent with pregnancy. The two other littermates, queen and tom were reproductively normal. The uteruses of the affected cats were nearly identical with a gross and histopathologic diagnosis of uterus unicornis with concurrent pregnancy. Ovaries were present, bilaterally. An oviduct was present only on the single normally developed and pregnant uterine horn in both cats. At a postoperative follow-up evaluation, abdominal ultrasound was performed on the two cats with uterine abnormalities. Cat 1 was ultrasonographically within normal limits. Cat 2 was diagnosed with ipsilateral renal agenesis on the same side as the absent uterine horn.Relevance and novel informationThe complexity of uterus unicornis and renal aplasia is demonstrated by this unique presentation of five related cats for ovariohysterectomy. This report raises questions regarding the genetic, environmental, hormonal or other underlying causes of this anatomic abnormality in cats that may spur additional research. This is the first publication describing uterus unicornis in gravid feline littermates, with one of the cats having ipsilateral renal agenesis. This is also the first publication to describe oviduct agenesis on the affected uterine horn in feline uterus unicornis.

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Section: Discussionmentioning

confidence: 99%

Uterus unicornis and pregnancy in two feline littermates

Brookshire

Shivley

Woodruff

et al. 2017

Journal of Feline Medicine and Surgery Open Reports

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“…[37][38][39][40] In this study, the incidence of uterus unicornis was approximately 0.28% (2 of 720). Uterus unicornis has been observed in various animals, [41][42][43] but rarely reported in rhesus macaques. In human females, only one case in 76,000 of a pregnancy in the rudimentary horn has been reported and also in the present study, 44 uterus unocornis was the least common of all the reproductive abnormalities observed in free-ranging rhesus macaques.…”

Section: Discussionmentioning

confidence: 99%

Laparoscopic diagnosis of gross reproductive abnormalities in free-ranging female rhesus macaques (Macaca mulatta)

Kumar¹,

Raj²

2012

Vet Sci Develop

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A study was conducted between July 2010 to June 2011 in the Monkey Sterilization Centre, Gopalpur, Himachal Pradesh, India to assess the prevalence of reproductive disorders by laparoscopic examination of the genitalia of female rhesus macaques. The animals were captured from different locations in the state using a cage trapping method. A total of 720 female rhesus macaques underwent laparoscopic examination of their reproductive tracts. A total of 63 cases were found to have reproductive abnormalities. Out of these 63 cases, the most common abnormalities reported were ovarian cyst 3.05% (n=22), ovarian tumor 1.66% (n=12), uterine tumor 1.25% (n=9), uterine edema 0.97% (n=7), uterine rupture 0.83% (n=6), ectopic pregnancy 0.69% (n=5), unicornis or acornis 0.28% (n=2). The highest number of cases of uterine abnormalities was recorded in the 12-16 year old age group (33.33%), followed by 8-12 year olds (25.39%), 16-20 year olds (22.22%), then 4-8 year olds (15.87%) and 0-4 year olds (3.17%). Of the 63 animals that showed genital abnormalities, only 52 were found to be pregnant during the breeding season from November to March in the 5-20 year old age group, while 11 animals were not pregnant; a pregnancy rate of 82.53% (52 of 63) of the female rhesus macaques with reproductive abnormalities.

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“…In jennet‐1, vaginoscopy showed a vaginal cavity of normal length, with a small cervical relief in its most cranial aspect, excluding the diagnosis of vaginal hypoplasia or other vaginal defects and pointing to the existence of a cervical anomaly. On transrectal palpation, the reproductive tract was considered to be normally developed, excluding the co‐existence of a partial segmental aplasia of the uterus, as it was elsewhere reported in the case of a mare (Brown et al. 2007).…”

Section: Discussionmentioning

confidence: 99%

Cervical Hypoplasia in Jennets: A Description of Two Cases

Payan-Carreira

Quaresma

2010

Reprod Domestic Animals

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The authors describe two cases of cervical hypoplasia in jennets, detected during the gynaecological evaluation of two purebred females of the Portuguese donkey breed Asinina de Miranda. These jennets aged 10 and 15 years were referred for consultation by the local breeders association because of infertility detected during an artificial breeding programme. In both jennets the cervix was small, shorter than the usual and closed. In one of the females, outflow of semen during artificial insemination was reported. Clinical and ultrasonographic evaluation of the genital tract demonstrated that both ovaries were normally sized in both animals and presenting structures suggestive of regular ovarian activity. In one of the jennets, a small amount of air in the uterus was evidenced. In the other, signs indicative of atresia of the cervical canal were found. Vaginal examination showed that the cervix was reduced in size and shallowed in both animals. A diagnosis of congenital cervical hypoplasia was made in both cases and the animals were excluded from reproduction.

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Uterus unicornis in two mares

Cited by 10 publications

References 3 publications

Uterus unicornis and pregnancy in two feline littermates

Uterus unicornis and pregnancy in two feline littermates

Laparoscopic diagnosis of gross reproductive abnormalities in free-ranging female rhesus macaques (Macaca mulatta)

Cervical Hypoplasia in Jennets: A Description of Two Cases

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