Subtypes

Filling defect in calyx

Filling defect in infundibulum

Filling defect in renal pelvis

May Be Caused by

Aberrant papilla

Amyloidosis

Angiomyolipoma

Hamartoma

Hemangioma

Hydatid cyst

Inflammatory polyp

Kidney stone

Leukoplakia

Lymphoma

Malacoplakia

Metastasis

Multicystic kidney with pelvoinfundibular atresia

Mycetoma

Normal renal artery or vein impression

Oncocytoma

Papilloma

Parapelvic renal cyst

Parenchymal renal cyst

Polycystic kidney

Pyelitis cystica

Pyelonephritis with debris

Renal cell carcinoma

Renal sinus lipomatosis

Saccular aneurysm

Sloughed papilla

Thrombus

Transitional cell carcinoma

Urinary tract cholesteatoma

Urinary tract gas

Urinoma

Wilms tumor