Freebase(0.00 / 0 votes)Rate this definition: Arbol is a programming language which has been primarily developed for use in Genetic Programming experiments. It is a functional programming language inspired by the ideas of other small and esoteric languages.
Causes. In most cases of colon or rectal cancers, the cause or causes are unknown. Defects in genes that normally protect against cancer play the major role in causing polyp cells to continuously change and become cancerous.
Similarities and Differences. 1  Colon cancer affects the colon, rectum and the appendix, while prostate cancer is localized in the prostate. 2  In the first two stages, malign cells can be removed through surgery. 3  Smoking and alcohol abuse can trigger colon cancer.imilarities and Differences. 1  Colon cancer affects the colon, rectum and the appendix, while prostate cancer is localized in the prostate. 2  In the first two stages, malign cells can be removed through surgery. 3  Smoking and alcohol abuse can trigger colon cancer.