By traditional standards, these patients appear to fare quite well. Nevertheless, their self-reported life experience is unsatisfying when compared with the control group. The authors conclude that psychosocial factors are critical to complete recovery and the QOL of children who undergo successful operations for benign cerebellar astrocytoma.

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KEY WORDS: adenomas, risk factors, colorectal cancer, epidemiology INTRODUCTIONThe approach to the possible causative factors of colorectal cancer has changed substantially during the last 20 years. The enthusiasm aroused by the Burkitt's fiber hypothesis [1] is today partly overcome by the contradictory results from analytical studies and by the trends emerging from descriptive epidemiology. In addition, the identification of precursor lesions, such as adenomas, is shifting the interest of researchers to earlier stages of the natural history of these cancers, in the attempt to link risk factors to the development and progressions of adenomas.

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