Abstract
1Renal parenchyma (renal cell) cancer represents around 80% of this total and nearly all of these cases are adenocarcinomas. 2,3 As a whole, it is difficult to obtain clear descriptive patterns of incidence and mortality from renal cell cancer, since population data from different regions are presented conjointly with pelvis and ureter cancers. 4 In Latin America, the highest incidence rates of kidney cancer are observed in Montevideo, Uruguay (10.6 per 100,000 males) and in Porto Alegre, Brazil (10.2 per 100,000 males). The Sao Paulo City Cancer Registry has reported a lower rate (6.9 per 100,000 males), but this is higher than the rates reported in Belem and Goiânia. 4,5 The male/female ratio of kidney cancer in Sao Paulo is 1.9:1. The incidence of renal cell cancer and the associated mortality have increased throughout the world 3 over the last 50 years. In the city of Sao Paulo too, increasing incidence of kidney cancer and associated mortality was observed from 1969 to 1998, but the specific rates for renal cell cancer could not be shown. 5
Highlights
The authors divided the study subjects into two groups, which were both submitted to the same surgical procedures: those with symptoms, for whom a 5-year survival rate of 80% was estimated, and another group, formed by subjects with incidental renal cell cancer diagnosis, with a 5-year survival rate of 100%
In the present study it can be postulated that incidental renal cell cancer cases seem to have better prognosis, either due to their lower degree of malignancy or their slower growth,[3] and these characteristics may have artificially improved the survival of this group of cases
On the basis of this review study, the main issue to be pointed out is that the discovery of an incidental renal cell cancer case presupposes prompt measures for treating the disease
Summary
Malignant tumors of the kidney account for about 1.9% of total world cancers, with about 150,000 new cases annually.[1]. Results from international studies In their comprehensive renal cell cancer survival analysis, Dall’Oglio et al.[6] collected valuable data which allowed them to make some inferences regarding diagnosis and prognosis for this disease.
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