Genitourinary

The importance of CT Urography in early diagnosis of anatomical variations in urogenital tract: case presentation

“…Renal ectopia is defined as an abnormal positioning of the kidney, outside the renal fossa, due to abnormalities in its ascent during early renal embryogenesis [ 18 , 19 ]. It develops as a result of an aberration during the normal migration of the metanephros and the ureteric bud from the pelvis to the lumbar region, between the sixth to eighth week of gestation [20] .…”

“…The ectopic kidney may present ipsilaterally to its ureteral insertion, simple ectopia or contralaterally to its ureteral insertion, cross ectopia, that is often associated with partial fusion with the orthotopic kidney, as well [19] . Pelvic kidneys may present with malrotation, hydronephrosis due to obstruction or VUR, extrarenal calices, nephrolithiasis and UPJO [ 18 , 20 ,– 23 ]. Obstruction has been hypothesized to derive from the high insertion of the ureters into the pyelocaliceal system, impeding the normal drainage and facilitating urinary stasis [23] .…”