Unilateral hydronephrosis and hydroureter secondary to ureteric atresia, and uterus unicornis in a young terrier

Rousset, Nicolas; Abbondati, E.; Posch, Barbara; Owen, Lesley; Herrtage, M. E.

doi:10.1111/j.1748-5827.2011.01084.x

Cited by 7 publications

(5 citation statements)

References 24 publications

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“…Unlike other cases in the literature, the animal in this report did not develop clinical signs of hydronephrosis such as polyuria, polydipsia, hematuria, abdominalgia, external fistula and anorexia [11]. Mesquita and collaborators reported a case of hydronephrosis due to obstruction of the ureter with a Nylon clamp, in which the animal presented signs of progressive weight loss, emesis and anorexia at the first visit to the hospital, referring to an animal 4 years younger than the one in this report and with surgical procedure performed in a castration campaign, which can be considered a major problem in Brazil [8].…”

Section: Discussioncontrasting

confidence: 80%

“…Meanwhile, in felines the various causes include extramural obstructions due to leiomyosarcoma [4] and complications from ovariohysterectomy [9]. Studies show that there may be situations in which there is no evidence of clinical signs, since hydronephrosis has a progressive character and, therefore, signs may appear with the progression of the disease [11]. However, macro and microscopic findings revealed a severe and advanced condition of the disease with risk of rupture of the renal capsule, given the absence of renal parenchyma.…”

Section: Discussionmentioning

confidence: 99%

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Hydronephrosis in a Dog Related to Ovariosalpingohysterectomy

Zaiden

Germano

Neto

et al. 2021

Acta Scientiae. Vet.

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Background: Hydronephrosis is the dilation of the pelvis and renal calyxes due to post-renal obstruction. The obstruction is often associated with extraluminal masses, blood clots and ureter ligation in castration procedures. Ureter ligation is reported as a malpractice. The renal function is reestablished if ligation is rapidly undone, but not for obstructions longer than four weeks. Often, clinical signs are results from months to years after the castration, when nephrectomy is the best therapeutic option. This paper aims to report a case of asymptomatic unilateral hydronephrosis in a 10-year-old dog caused by chronic ureter occlusion with Nylon 3.0 suture during an elective procedure.Case: A 10-year-old female pinscher dog, spayed 3 years ago was admitted at the Surgery Department of the Veterinary Hospital of the Federal University of Jataí (HV-UFJ). The animal was taken for periodontal treatment. In the physical and laboratory examination (complete blood count, hepatic and renal biochemical tests) no significant and noteworthy alterations were found. Ultrasonographic examination showed no changes in the topography and echotexture of the left kidney, however the right kidney was not visualized, with an anechoic structure suggestive of advanced and severe hydronephrosis. Therefore, exploratory laparotomy was proposed to identify the observed structure, with the periodontal treatment considered for a later time. So, a retroumbilical incision was made, followed by linea alba and the removal of simple isolated suture remaining from previous surgical procedure. In the cavity, the viscera were isolated and the left kidney was identified, observing preserved anatomy. On the other hand, the right kidney had altered topography and morphology, being exposed after release of adhesions in adjacent structures. The right renal artery and vein were dissected and a double ligature was made. Then, the right ureter was dissected, observing marked dilatation in the proximal portion and the presence of local ligation with Nylon 3.0. Right ureterectomy and right nephrectomy were performed. After nephrectomy, the capsule was ruptured, observing dark fluid in it and absence of tissue compatible with renal parenchyma. The material was preserved in 10% formaldehyde and sent for histopathological examination. Histopathology revealed risk of rupture of the renal capsule due to the advance of renal degeneration and complete absence of parenchyma. However, contrary to the severity of the histopathological, surgical and ultrasonographic findings, the patient did not present clinical signs at the time of diagnosis.Discussion: In the intraoperative evaluation, the cause of the hydronephrosis was verified to be in fact the ligation of the ureter, which may have been accidental or due to the malpractice of the veterinarian surgeon. Other possible causes such as adhesions and granulomas were ruled out because the Nylon 3.0 suture was found in the proximal portion of the right ureter. It is believed that the patient may have presented clinical signs of hydronephrosis that may have been confused by the tutors as postoperative complications, changes that if identified and performed in time, could have avoided the occurrence or worsening of hydronephrosis and subsequent nephrectomy. Clinically, the bitch did not show clinical signs presented in the literature as consistent with hydronephrosis such as polyuria, polydipsia, abdominalgia, external fistula and anorexia. Therefore, it is believed that this case is one of the first reports of the occurrence of severe hydronephrosis without typical clinical manifestations of hydronephrosis. This fact raises a warning about the thorough monitoring in the postoperative period by owners and veterinarians, in addition to highlighting concerns regarding the occurrence of medical malpractice versus surgical accidents. Keywords: castration, malpractice, nephrectomy, nylon.

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Section: Discussioncontrasting

confidence: 80%

Section: Discussionmentioning

confidence: 99%

Hydronephrosis in a Dog Related to Ovariosalpingohysterectomy

Zaiden

Germano

Neto

et al. 2021

Acta Scientiae. Vet.

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“…Dogs with hydronephrosis showed lack of demarcation between the cortex and medulla of the kidney and renal pelvis appeared dilated hypoechoic structure on ultrasonographic examination (Plate 3). However, Rousset et al (2011) claimed that, hydronephrosis dogs did not show any clinical signs due to continuous dilation of renal pelvis. The present USG observations concurred with the findings of Kumar et al (2011) and Raposo et al (2013).…”

Section: Hydronephrosismentioning

confidence: 99%

Ultrasonographic Diagnosis of Urinary System Affections in Dogs

Barot

Patel

Parikh

2022

ijvsbt

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In present investigation total 37 dogs with different urinary system affection were included. Common physical findings in urinary tract disease were stranguria / dysuria, haematuria, anuria and urinary incontinence. Ultrasonographic examinations showed hyperechoic calculi with acoustic shadow in case of kidney stone; lack of demarcation between the cortex and medulla and enlarged kidney in hydronephrosis, and non-homogenous small kidneys with loss of corticomedullary differentiation when dog was affected with chronic kidney disease. Cystic and urethral calculi ultrasonographically appeared as hyperechoic structures creating acoustic shadowing. Further renal mass, cystitis and urinary bladder mass were clearly diagnosed using ultrasonography. On the basis of present findings, we concluded that ultrasonography could be best exploited in the diagnosis of urinary system affections.

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“…Open surgical resection has traditionally been performed through a ventral median celiotomy with dissection of the kidney from its retroperitoneal attachments, ligation of the renal artery, and vein and dissection and ligation of the distal ureter . Conditions historically treated using ureteronephrectomy in dogs include primary renal neoplasia, hydronephrosis, chronic or unresponsive pyelonephritis, renal dysplasia, polycystic kidney disease, ureteral atresia, nephrolithiasis, trauma, and idiopathic renal hematuria . Conventional open ureteronephrectomy is generally well tolerated but complications including iatrogenic damage to surrounding organs, hemorrhage, postoperative pancreatitis, wound healing complications as well as deterioration in renal function postoperatively have been reported…”

mentioning

confidence: 99%