Michael P. D'Alessandro, M.D.
Peer Review Status: Internally Peer Reviewed
Due to abnormal ascent of the kidneys, resulting in abnormalities in renal position, rotation and fusion. Renal ectopic by definition refers to abnormal position of the kidneys. The most common site of an ectopic kidney is in the pelvis, rarely it can be too high and in the chest - a thoracic kidney.
When an ectopic kidney crosses over to the contralateral side it is called crossed renal ectopia and the kidney lies below the contralateral kidney. There is usually fusion between the 2 kidneys and in doing this the crossed lower kidney malrotates so the pelves point to the midline and the crossed kidney's drainage is to the side it would drain to if it had not malrotated. More common in males and more common on the right. Fifty percent of patients have associated genitourinary, skeletal and cardiac valvular defects.
The ectopic kidney crosses the midline and its upper pole fuses with the lower pole of the contralateral kidney. The kidneys ureters drain to their respective sides.
See References Chapter.
Section Top | Title Page
Please send us comments by filling out our Comment Form.
All contents copyright © 1992-2013 Donna M. D'Alessandro, M.D. and Michael P. D'Alessandro, M.D. and the authors. All rights reserved.
"Virtual Pediatric Hospital", the Virtual Pediatric Hospital logo, and "A digital library of pediatric information" are all Trademarks of Donna M. D'Alessandro, M.D. and Michael P. D'Alessandro, M.D.
Virtual Pediatric Hospital is funded in whole by Donna M. D'Alessandro, M.D. and Michael P. D'Alessandro, M.D. Advertising is not accepted.
Your personal information remains confidential and is not sold, leased, or given to any third party be they reliable or not.
The information contained in Virtual Pediatric Hospital is not a substitute for the medical care and advice of your physician. There may be variations in treatment that your physician may recommend based on individual facts and circumstances.
This site complies with the HONcode standard for trustworthy health information: