A review of case histories from 1988 to 1990 shows an increase in the incidence of renal neoplasms compared to previous years. Analysing the symptomatology and signs that led to diagnosis of a renal tumor in 105 patients, the classical triad (hematuria, pain, swelling) was less evident while “accidental” discovery was clearly more frequent. Taking the paraneoplastic, clinical and laboratory signs into consideration, a significant incidence of anemia, high sedimentation rate and a change in the immunoglobulin (in 30% of cases) emerged, without specificity of monoclonal peaks.
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