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[Renal cancer today - suspicion, diagnosis or therapy? (author's transl)].

The present-day situation of recording and diagnosis of malignant renal tumours was investigated on 50 patients recently seen by us. It was found that the complex radiological diagnosis (composed of excretion urography, isotope nephrography, renoscintigraphy, renovasography and additional investigations) is very well suited to show renal cancer in all stages taking into consideration localisation, extent and relations to surrounding tissue. As ever, the difficulty for a clarifying diagnosis still lies in seeing the patient as early as possible. This is due to the almost exclusively uncharacteristic symptoms which, additionally, very frequently coincide with symptoms of other diseases. The only chief symptom is clearly 'painless haematuria'. Relatively large renal tumours also escape palpation. The possibility of tracing haematurias during screening tests with 'Reagnost haemoglobin' tablets is discussed.