Crossed fused renal ectopia presenting as recurrent lower abdominal pain and urinary tract infection

Апстракт

Background: Crossed fused renal ectopia is a relatively rare condition which may remain undiagnosed for a long time. Renal function is usually preserved. It usually involves the left kidney. It is usually associated with mal-rotation, and may be a cause of urinary tract infection, hydronephrosis and renal calculi.

Material and method: We report a case of a 15-year old boy who was referred to our clinic with complaints of abdominal pain, and an ultrasound report of “absent right kidney”.

Results: Urine examination indicated a partially treated infection, but the tests of kidney functions were normal. Intravenous urography confirmed crossed fused renal ectopia, and a flush aortogram showed two anomalous right renal arteries arising from the left side of aorta.

Conclusion: An “absent” kidney in its normal location should prompt further investigations. Recurrent chronic lower abdominal pain and urinary tract infection in a young person may be due to congenital renal abnormality. Evaluation of persistent urinary abnormalities in a child should include screening for congenital abnormalities.

Keywords: Crossed fused renal ectopia. abdominal pain. recurrent urinary tract infection

Résumé
Contexte: L’ectopie rénale croisée et fusionnée (la mauvaise fonction rénale) est une maladie relativement rare qui peut rester non diagnostiquée pendant une longue période. La fonction rénale est généralement préservée. Elle implique généralement le rein gauche. Elle est souvent associée à une mauvaise rotation, et peut être une cause d’infection des voies urinaires, hydronéphrose et des grains formulés dans le système rénal.

Méthode: Nous avons fait usage du cas d’un garçon de 15 ans qui nous a été transféré pour plaintes de douleurs abdominales, suivi du rapport d’échographie faisant cas “d’absence de rein droit”.

Résultats: L’examen d’urine a indiqué une infection partiellement traitées, mais les tests de la fonction rénale étaient normaux. L’urographie intraveineuse a confirmé l’ectopie rénale fusionnée et croisée, et une aortographie a montré deux artères rénales droites anormales découlant de la partie gauche de l’aorte.

Conclusion: Un rein “absent” à son emplacement normal devrait inciter aux investigations. Les récurrentes douleurs abdominales chroniques et les infections des voies urinaires chez les jeunes peuvent être dues à une anomalie congénitale rénale. L’évaluation des anomalies urinaires persistantes chez un enfant devrait inclure le dépistage des anomalies congénitales

Correspondence: Dr. Samuel Ajayi, Department of Medicine, College of Medicine, University of Ibadan, Ibadan, Nigeria. E-mail: soajayi@hotmail.com.

pdf (енглески)

Референце

Song, R. and Yosypiv, I. Genetics of congenital anomalies of the kidney and urinary tract. Pediatric nephrology (Berlin, Germany). 26(3): 353-364.

Niimura, F., Kon, V and Ichikawa, I. The renin-angiotensin system in the development of the congenital anomalies of the kidney and urinary tract. Current opinion in pediatrics, 2006. 18(2): 161-166.

Patel, T.V. and Singh,AK Crossed fused ectopia of the kidneys. Kidney Int, 2008. 73(5): 662.

Modi, P., et al., Retroperitoneoscopic nephrectomy for crossed-fused ectopic kidney. Indian J Urol, 2009. 25(3): 401-403.

Nwokoro, SO, Ifada K, Onochie O and Olomu JM. Anthropometric assessment of nutritional status and growth of 10 - 20 years old individuals in Benin City (Nigeria) metropolis. Pakistan Journal of Nutrition 20065 (2): 117-121

McCarthy, S. and Rosenfield, AT. Ultrasonography in crossed renal ectopia. J Ultrasound Med, 1984; 3(3): 107-112.

Martinez Silva, V. Suarez C.A.,Cruceyra B.G.,et al. Renal colic in a patient with crossed renal ectopia]. Arch Esp Urol, 2003.56(3): 294-297.

Nochiri EN. Chronic nephritis in a crossed renal ectopia with fusion: report of a case in a 15-year-old African youth. British Journal of Urology.2008; 32(3):277-279.

Amin, M.U., S. Khan, and Nafees, M. Crossed fused renal ectopia with staghorn calculus and gross hydronephrosis. J Coll Physicians Surg Pak, 2009. 19(1): 69-70.

Bello BT, Busari AA, Sheyin O, Amira CO, and Mabayoje MO. Crossed Renal Ectopia coexisting with nephrolithiasis in a young Nigerian man. Arab Journal of Nephrology and Transplantation.2012; 5(2):107-110.

Aguilera Tubet, C., Del Valle Schaan, Martin J.I., Garcia, B., et al. Renal cell carcinoma in crossed fused renal ectopia. Actas Urol Esp, 2005. 29(10): 993-996.

Bolton, D.M., Bowsher, BW and Costello, A.J. Renal cell carcinoma in both moieties of crossed fused ectopia. Aust N Z J Surg, 1993; 63(8): 662-663.

Iida, Y., Obitsu, Y, Sugimoto, T., et al. A case of abdominal aortic aneurysm associated with L-shaped crossed-fused renal ectopia. Ann Vasc Surg. 2010; 24(8): 1137 e1-5.

Caldamone, A.A. and Rabinowitz, R. Crossed fused renal ectopia, orthotopic multicystic dysplasia and vaginal agenesis. J Urol, 1981; 126(1): 105-107.

Glodny B, Peterson J, Hofmann KJ, et al. Kidney fusion anomalies revisited: clinical and radiological analysis of 209 cases of crossed fused ectopia and horseshoe kidney. Br J Urol Int. 2009; 103(2): 224-235