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Benign and malignant tumours can develop in the kidneys and usually only become apparent when they cause symptoms. Even benign tumours can have serious consequences. So it is very important that changes are detected early on and investigated.

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In most cases, renal cell carcinoma is found as an incidental finding during cross-sectional imaging investigations (e.g. ultrasound, CT, MRI).

The earlier a renal cell carcinoma is discovered, the better the chance of cure. If a renal cell carcinoma is only discovered as a result of blood in the urine or flank pain, the tumour is usually already quite advanced by this stage and the prognosis is accordingly poorer.

Carcinoma of the kidney (renal cell carcinoma) accounts for around 1 to 2 percent of all malignant tumours in Germany.