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filling defect in renal collecting system

common causes:

transitional cell carcinoma
blood clot
lucent calculus (urate)

less common causes:

fungus ball
sloughed papilla
fibroepithelial polyp
invasion by hypernephroma
malakoplakia
vessel impression
metastases

Brian Funaki, MD - 9 March 1995
Last updated: 1 October 2013

Related CHORUS documents:

renal calculi

malakoplakia

matrix calculi

renal adenocarcinoma

tuberous sclerosis (Bourneville disease)

bladder calcification

Copyright © 2013, Charles E. Kahn, Jr.