A paraneoplastic syndrome in patients with a carcinoma of the upper urinary tract

: Evidence of a paraneoplastic syndrome is established in 21/63 patients (33.3 per cent) presenting upper urinary tract tumors. It becomes manifest 2-5 months before diagnosing the basic malignant disease. Subfebrility and anemia are the commonest paraneoplastic symptoms, clinically expressed in 15.87 per cent of cases. As the result of radical treatment, this symptomatology disappears within 10 days to two months after resorting to radical surgery. The paraneoplastic syndrome may be interpreted as a clinical "tumor marker;, indicating whether or not the treatment is radical, or the occurrence of a relapse and metastases may be anticipated.