GAMUT H-18
INTRARENAL CONTRAST COLLECTIONS (IV UROGRAPHY, CT)


COMMON
1. Calyceal diverticulum 
2. Dilated calyx


UNCOMMON
1. Communicating cyst (eg, ruptured hydatid)
2. Communicating urinoma
3. Medullary sponge kidney ("paint brush" effect)
4. Papillary necrosis
5. Trauma (eg, fractured kidney or calyces)





References