Crossed renal ectopia with fusion in a female feline: case report

Fulgêncio, J.Q.; Miranda, F.G.; Santos, C.J.; Moreira, G.D.; Tôrres, R.C.S.; Nepomuceno, Anelise Carvalho

doi:10.1590/1678-4162-10533

Cited by 2 publications

(7 citation statements)

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“…In crossed ectopia with fusion, the migration of the left kidney to the right side is most often described in humans [3]. In the cases of CFRE reported to date in cats, the kidney fusion consisted in moving one of them to the contralateral one, located physiologically [3,9,10]. In the present case, both kidneys were ectopic, in addition a fusion and changes in the sides of the renal pelvis were observed.…”

Section: Discussionsupporting

confidence: 47%

“…Ectopic kidneys have previously been described as a defect in humans [ 6 ], cattle [ 7 ], dogs [ 2 , 8 ] and cats [ 3 – 5 , 9 , 10 ], most often as asymptomatic and appearing rarely. Until now, CFRE cases in cats were reported in both, males [ 3 , 9 ] and females [ 4 , 5 , 10 ]. Developmental defects, especially CFRE, may predispose to the occurrence of nephrolithiasis, hydronephrosis or urinary tract infections resulting in pyelonephritis [ 3 ].…”

Section: Introductionmentioning

confidence: 99%

“…To date, five reports of CFRE in cats have been described [ 3 – 5 , 9 , 10 ]. Modern methods of diagnostic imaging allow for better detection of this type of congenital defects in vivo, and reports describing the condition can be extremely helpful in the differential diagnosis of the masses in the caudal part of the abdominal cavity [ 3 ].…”

Section: Introductionmentioning

confidence: 99%

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Crossed renal ectopia with fusion in a pelvic inlet area, atypical portal vein and coccygeal deformation in a young female cat

et al. 2020

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Background: The case report describes a rare congenital anomaly, crossed fused renal ectopia (CFRE), with coexistence of two other abnormalitiesatypical portal vein and coccygeal vertebrae malformation in a domestic cat. The concomitance of those 3 congenital defects has not been described previously. Case presentation: An 8-month-old female, domestic cat suffering from chronic diarrhea was referred to the diagnostic imaging unit. The patient showed no other clinical symptoms. An abdominal ultrasonographic examination was performed in order to evaluate the condition of abdominal organs, particularly the gastrointestinal tract. The ultrasound examination showed an ectopic duplex kidney at instead of kidneys in their typical location. Computed tomography (CT) with angiographic phase and excretory urography was requested to evaluate the condition of the kidneys and ureters. The final diagnosis was CFRE, atypical portal vein and coccygeal deformation in an asymptomatic cat with no changes in renal function and normal blood parameters. Conclusions: Crossed fused renal ectopia is a rare congenital anomaly and is easily detectable by an abdominal ultrasonographic examination and CT, which allows more complete assessment of both anatomical relations and secretory function of the kidney. The occurrence of CFRE, abnormal portal vein and spinal malformation in a clinically healthy patient is the evidence that congenital malformations may simultaneously involve various, not directly related structures and systems, without significant influence on blood and urine parameters. Thus the most useful tool in the evaluation of the morphological and functional changes is the diagnostic imaging, especially contrast enhanced CT. Our results show that renal fusions should be considered in the differential diagnosis of caudal abdominal masses.

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Section: Discussionsupporting

confidence: 47%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Crossed renal ectopia with fusion in a pelvic inlet area, atypical portal vein and coccygeal deformation in a young female cat

et al. 2020

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“…10 In the fourth report, the author did not describe the fusion type. 11 In addition, left to right fusion was the most common type (in 3/4 cats). 9–12 Evaluation of the ectopia type for the 13 cases in this series showed that left to right fusion was the most prevalent, similar to the previous published cases.…”

Section: Discussionmentioning

confidence: 99%

“…11 In addition, left to right fusion was the most common type (in 3/4 cats). 9–12 Evaluation of the ectopia type for the 13 cases in this series showed that left to right fusion was the most prevalent, similar to the previous published cases. In this series, 5/13 cases were classified as lump kidney and 4/13 were classified as disc kidney.…”

Section: Discussionmentioning

confidence: 99%

Imaging features of renal ectopia and fusion in 13 cats

Slinkard,

Anson,

Specchi

et al. 2023

Journal of Feline Medicine and Surgery

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Case series summary A retrospective multicenter case series of renal fusion anomalies in cats was investigated. The aim of this study was to describe the imaging characteristics (radiography, ultrasonography and CT) of renal ectopia and fusion in cats. A total of 13 feline patients (median age 9 years) were included in this multicentric retrospective study. Ultrasound was available in 12/13 cases, radiographs in 4/13 cases and CT in 3/13 cases. Of the 13 cases, seven were left to right fusions, four were right to left fusions, one was on the midline and one was in the pelvic inlet. Adopting a human classification system, there were five lump kidneys, four disc kidneys, one horseshoe kidney, one caudal ectopia, one L-shaped kidney and one pelvic kidney. In 2/13 cases, additional congenital malformations were noted, including an azygous continuation of the caudal vena cava and a peritoneal-pericardial diaphragmatic hernia. Relevance and novel information This study provides further description of the imaging findings in feline patients with fused renal ectopia. The morphologic characteristics of the fused kidneys in cats appear similar to what is published in the human literature. Renal fusion might be an incidental finding in cats, but further investigations are necessary to determine their clinical relevance.

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Crossed renal ectopia with fusion in a female feline: case report

Cited by 2 publications

References 5 publications

Crossed renal ectopia with fusion in a pelvic inlet area, atypical portal vein and coccygeal deformation in a young female cat

Crossed renal ectopia with fusion in a pelvic inlet area, atypical portal vein and coccygeal deformation in a young female cat

Imaging features of renal ectopia and fusion in 13 cats

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