text: thanks to vamedicca! what is a renal calcified mass? i don't believe it's a kidney stone, the symptoms aren't there for kidney stones. i thought the doctor was looking for cancer. what are the imaging manifestations of renal carcinoma? on ct:  hypodense  cystic  calcified mass   http://www.meddean.luc.edu/lumen/meded/radio/curriculum/surgery/renal_cancer_list.htm  cystic nephroma typically presents as a painless abdominal mass without systemic symptoms. the appearance on ct is a multiloculated cystic mass; the septa usually do not enhance and are sometimes calcified (10%).   http://brighamrad.harvard.edu/cases/bwh/hcache/385/full.html  cystic masses can calcify:  "to determine whether the presence of calcifications in cystic renal masses is important in diagnosis and to suggest an approach to the management of calcified cystic renal masses."  http://radiology.rsnajnls.org/cgi/content/full/226/1/47