Urinary tract imaging Mega ureter Retrocaval ureter right

Urinary tract imaging

*Mega ureter

*Retrocaval ureter (right ureter ) behind inferior vena cava.

*PUJ obstruction

*Duplication of the right kidney

Horse shoe kidney : -*lower poles fused *low positioned kidneys *parallel to spines. *malrotated medially

*Right kideny is ectopic(presacrally located)&bilateral hydronephrosis.

*Polycystic kidney disease

*Cobra head: -rounded or elliptical dilatation of lower end of ureter with thin lineal filling defect around it with proximal dilatation of the rest of ureter.

Same as previously

*Ectopia vesica : -bladder located at low position with separartion of symphysis pubis. :

*Cobra head: rounded or elliptical dilatation of lower end of ureter with thin lineal filling defect around it with proximal dilatation of the rest of ureter

*Bilateral megaureter

*Ectopic left kidney: -ureter is short (small arrow)

Retrocaval ureter: - (right ureter ) behind inferior vena cava.

*Hydronephrosis + ectopic left kidney

*PUJ obstruction&retrocaval ureter

*Hydronephrosis&ectopic kidney

*PUJ obstruction

Horse shoe kidney : -*lower poles fused *low positioned kidneys *parallel to spines. *malrotated medially

*PUJ obstruction

Horse shoe kidney : -*lower poles fused *low positioned kidneys *parallel to spines. *malrotated medially

*PUJ obstruction

*Duplication of right kidney

*PUJ obstruction

*Duplication (incomplete)

*Bladder shistosmomiasis (calcification most important feature)

*Dilated pelvicalyceal system with filling defect

*Irregular filling defect in P. C. S tumour

*Filling defect in P. C. S : - stone(because it is regular , if irregular blood clot or tumour.

*Stone in the left kidney

*PUJ obstruction

*Vesico ureteral junction stone on CT

*Stone without hydronephrosis (left) and stone+ hydronephrosis (right) because of dilatation of P. C. S

*Hydronephrosis: -dilated pelvicalyceal system on US

*Phlebolith (arrow): -round lucentre, , it represents calcified thrombus in pelvic vein.