Controversial Messages on Cancer

[Colorectal cancer: controversial role of meat consumption].

Diet is supposed to influence the colorectal cancer etiology, but the precise causative factors are yet unknown. International ecological studies show a strong correlation between meat consumption and the colorectal cancer incidence. Most case-control studies (22 of 29) show an increased risk to develop a colorectal cancer for those eating higher amounts of meat. In contrast, only 2 out of the ...

Screening for prostate cancer remains controversial.

The eff ectiveness of prostate-cancer screening with prostate-specifi c antigen (PSA) for mortality reduction and quality-of-life improvement remains uncertain after the recent publication of two large trials—the European randomised study of screening for prostate cancer (ERSPC) and the prostate, lung, colorectal, and ovarian (PLCO) cancer screening trial. ERSPC studied 162 000 men randomised t...

Silica and lung cancer: a controversial issue.

The role of crystalline silica in lung cancer has long been the subject of controversy. In this article, we review the main experimental and epidemiological studies dealing with this problem. Some evidence for a genotoxic potential of crystalline silica has been obtained in the rare in vitro studies published to date. In vivo studies have shown that crystalline silica is carcinogenic in the rat...

Virus and cancer: a controversial theory

Francesc Duran Reynals was most likely the first Catalan to become a research scientist of world renown [1]. Around 1900 both science and technology were well represented in Catalan society. But those with the highest profiles were the applied fields, such as industrial technology, medicine, or surgery. The weak initiatives of the Spanish state in this area (demonstrated in, for example, a very...

Surgical Treatment of Colorectal Cancer – Controversial Issues