Crossed fused renal ectopia

Case contributed by Dr Kewal Arunkumar Mistry


Abdominal pain.

Patient Data

Age: 34 years
Gender: Male

Both kidneys are located on the right side of the midline and show fusion at their poles with renal sinuses directed away from each other.

The left renal fossa is empty. Features suggest a sigmoid type of Crossed fused renal ectopia.

Case Discussion

Crossed fused renal ectopia is believed to be a result of abnormal development of the ureteric bud and metanephric blastema during the fourth to eighth weeks of intrauterine life. After Horseshoe kidney, it is the most frequent common abnormality of the urinary tract.

Actual incidence of this anomaly is not known as a large majority are asymptomatic. Estimated incidence at autopsy is 1:2000. 

It may be associated with pyelonephritis, hydronephrosis due to pelviureteric junction obstruction, urolithiasis and vesicoureteral reflux.

PlayAdd to Share

Case information

rID: 35406
Published: 5th Apr 2015
Last edited: 14th Aug 2019
System: Urogenital
Inclusion in quiz mode: Included

Updating… Please wait.

 Unable to process the form. Check for errors and try again.

 Thank you for updating your details.