| pubmed-article:8640660 | pubmed:abstractText | Multiple intraesophageal primary cancer and upper aerodigestive tract (UADT) cancer associated with esophageal cancer are common diseases, especially in heavy drinkers. They are often explained by the concept of field cancerization, which suggests a similar etiology. However, little is known about the nature of the hypothesized etiology. | lld:pubmed |
