Kidney tumours

Growths in the kidney. Kidney tumours may be cancerous (see kidney cancer) or noncancerous. Noncancerous ones, such as fibromas, lipomas, and leiomyomas, are often symptomless, although a haemangioma (composed of a collection of blood vessels) may grow very large and cause blood to appear in the urine. Treatment is usually not needed for noncancerous tumours unless they are large or painful, in which case they may be surgically removed.


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