Kidney Cyst Versus Tumor. Of 13 cysts 3 ultimately proved to be malignant at surgical exploration. Last medically reviewed on november 27 2017.

Like a cyst a tumor can form in any part of the body. A cyst is simply a round fluid filled mass much like a water balloon. A cyst is a sac that may be filled with air fluid or other material.
Of 13 cysts 3 ultimately proved to be malignant at surgical exploration.
However tumors may become cancerous later on. However tumors may become cancerous later on. Last medically reviewed on november 27 2017. Whereas cysts are mostly sacs containing fluids air and other materials tumors are abnormal masses of tissues.