Uterine horn aplasia with complications in two mixed-breed bitches : case report

Abstract

Unilateral segmental uterine horn aplasia was found in 2 mixed-breed bitches. The 1st bitch was presented with clinical signs of acute abdominal pain, and pyometra was suspected. Pyometra was confirmed surgically with rupture of a blind-ending cranial portion of the anomalous right uterine horn, which had resulted in peritonitis. The 2nd bitch was presented for routine ovariohysterectomy. The right uterine horn was affected by segmental aplasia, with mucometra of the cranial portion of the affected horn. Histopathology demonstrated both uteri to have diffuse cystic endometrial hyperplasia. It is postulated that cystic endometrial hyperplasia, together with the congenital anomaly, resulted in pyometra in one case and in mucometra in the other case. This is believed to be the 1st report of uterine horn aplasia in the bitch in association with clinical signs and lesions other than infertility

Segmental Aplasia of Uterine Body in an Adult Mixed Breed Dog

“…4 Aplasia of the uterus occurs mainly as segmental aplasia of the uterine horns in these animals but very rarely in bitches. 4,9 Aplasia of the uterine body is rarely recorded in swine, 10 and there are no reports of its occurrence in the other animals. Because either nondevelopment or nonfusion of the Müllerian ducts may result in partial or complete aplasia or duplication of the uterine body, 1,4,6 respectively, segmental aplasia of the uterine body in this report might have been caused by partial nondevelopment of the Müllerian ducts.…”

“…The underlying cause of the spontaneous aortic dissecting hematoma in these cases was not determined, but the histologic lesions in 1 of the cases was very similar to the elastin dysplasia that is observed in cases of human and bovine Marfan syndrome. 1,5,7,[8][9][10][11] The first case was a 1-year-old purebred Border Collie…”

Aplasia Unilateral De Corno Uterino Associada À Piometra E Cisto Parovariano Unilateral Em Gata: Relato De Caso

“…Usualmente, podem estar associadas a hidrometra, mucometra, complexo endometrial/cístico ou piometra, como ocorrido neste relato (SCHULMANA & BOLTONB, 1997;OH et al, 2005). A atividade cíclica geralmente está preservada, visto que os ovários possuem origem embriológica distinta (VINCE et al, 2011;AGUIRRA et al, 2014); em consonância com estes dados, os ovários apresentavam-se funcionais e inalterados anatomicamente.…”

“…O desenvolvimento incompleto dos ductos paramesonéfricos durante a vida embrionária pode se manifestar como uma série de anomalias congênitas em tubas uterinas, corpo e cornos uterinos e parte cranial da vagina (SCHULMANA & BOLTONB, 1997;OH et al, 2005;CHANG et al, 2008;GRADELA et al, 2013;AGUIRRA et al, 2014). Um exemplo é a aplasia de corno uterino, condição que pode acometer ambos os cornos (aplasia uterina total), somente um corno (aplasia uterina parcial, unilateral ou útero unicorno), ou uma parte de um corno (aplasia segmentar) (VINCE et al, 2011).…”

Congenital Aplasia of the Uterine-Vaginal Segment in Dogs

“…The kidney and the paramesonephric ducts have the same embryologic origin therefore this anomaly is usually associated with ipsilateral kidney absence (Chang et al, 2008). Unilateral uterine aplasia has been reported in dogs and cats (Schulman & Bolton, 1997;Pinto Filho et al, 2001;Güvenç et al, 2006). However, the ovary is of a separate embryological origin and is usually present (Moore & Persaud, 2008;Thode & Johnston, 2009).…”