GAMUT H-19
CLUBBING OR DESTRUCTION OF RENAL CALYCES


COMMON
1. Caliectasis, localized, from obstruction of infundibulum (eg, stone; neoplasm; stricture; clot; anomalous vessel)
2. Hydronephrosis
3. Papillary necrosis (See H-20)
4. Pyelonephritis  (incl. xanthogranulomatous)
5. Tuberculosis    
6. Vesicopelvic reflux 


UNCOMMON
1. Abscess
2. [Congenital megacalyx]
3. Fungus disease G
4. Neoplasm (esp. transitional cell carcinoma )
5. Postoperative scarring


[    ] This condition does not actually cause the gamuted imaging finding, but can produce imaging changes that simulate it.