Crossed renal ectopia is a rare congenital anomaly in which both kidneys are situated on one side and fused together in 85%-90% of cases.
Unenhanced computerized tomography (CT) of the abdomen showed left-to-right crossed renal ectopia and a 5 mm stone in the proximal ureter of the kidney located cranially (Figure 1).
McDonald and McClellan classified crossed renal ectopia into (i) crossed ectopia with fusion, (ii) crossed ectopia without fusion, (iii) unilateral crossed ectopia (associated with unilateral renal agenesis), and (iv) bilateral crossed ectopia without fusion (both ureters cross the midline) .
The choice of treatment for urinary calculi in cases of crossed renal ectopia should be made depending on the size and position of the urinary calculi and the patient's anatomy.
Consequently, a diagnosis of right-sided crossed renal ectopia was made.
Keywords: Crossed renal ectopia, DMSA, Nephrectomy.
Crossed renal ectopia occurs when both kidneys are on the same side with two ureters inserting into the bladder.
Crossed renal ectopia is a condition in which both kidneys exist on the same side with two separate ureters inserting into the bladder.
Other features of the syndrome include short stature, abnormality of phalyngeal bones, maxillary and mandibular abnormalities, obliterated maxillary sinuses, crossed renal ectopia
, and pelvic abnormalities.
Crossed renal ectopia
with fusion: report of two patients.
Anomalies associated with urachal remnants such as vesicoureteral reflux, meatal stenosis, hypospadias, umbilical and inguinal hernias, cryptorchidism, anal atresia, omphalocele and crossed renal ectopia
are rare, but should also be considered.
Treatment of renal calculus in inferior crossed renal ectopia