Human tumours usually develop due to a close inter action between environmental and genetic factors. This concept applies also to well defined genetic diseases such as Hereditary Nonpolyposis Colorectal Cancer (HNPCC or Lynch syndrome), which is featured by early onset tumours of the large bowel(and other target organs), striking aggregation of neoplasms in families, and vertical transmission consistent with an autosomal dominant pattern of inheritance. As a further example of gene/environment interaction, we report on a Hereditary Nonpolyposis Colorectal Cancer family in which two dizygotic twins were affected by cancer of the large bowel. One of the twins was slightly overweight and showed many common risk factors for colorectal carcinoma he developed a Dukes' C lesion at the age of 52 The other twin was not overweight and was much less exposed to exogenous risk factors; a Dukes' B carcinoma was diagnosed nt age 60 during a control endoscopy. This anedoctal report suggests that diet and lifestyle are of relevance also in patients with genetically determined tumours of the large bowel. It follows that the control of these environmental factors might be associated with a delay of tumour occurrence and possibly with a less aggressive tumour behaviour.
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|Anno di pubblicazione:||1999|
|Titolo:||Epidemiologic and genetic factor in colorectal cancer: development of cancer in dizygotic twins in a family with Lynch syndrome|
|Autori:||M. Ponz de Leon Pisani; M. Pedroni; P. Benatti; A. Percesepe; G. Rossi; M. Genuardi; L. Roncucci|
|Autori interni:||PONZ DE LEON, Maurizio |
|Rivista:||ITALIAN JOURNAL OF GASTROENTEROLOGY AND HEPATOLOGY|
|Appare nelle tipologie:||Articolo su rivista|
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