Abstract:
BACKGROUND: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. METHODS:Among 901 Japanese male alcoholics systematically screened by upper gastrointestinal endoscopy (with esophageal iodine staining), 33 had squamous cell carcinoma of the esophagus. The multiplicity of their esophageal carcinoma and their concurrent UADT cancer was compared with their genotype for aldehyde dehydrogenase-2 (ALDH2), the major determinant of blood acetaldehyde concentration after drinking. RESULTS:Of 17 patients with inactive ALDH2, 13 (76.5%) had multiple primary carcinoma of the esophagus, whereas 5 of 16 (31.3%) with active ALDH2 had multiple carcinomas (P < 0.01). The prevalence of concurrent UADT cancer was 29.4% in those patients with inactive ALDH2, compared with 6.3% in those patients with active ALDH2. CONCLUSIONS:Inactive ALDH2 is a risk factor for multiple carcinoma of the esophagus in alcoholics. Acetaldehyde, a recognized animal carcinogen, appears to play a critical role in field cancerization.
journal_name
Cancerjournal_title
Cancerauthors
Yokoyama A,Muramatsu T,Ohmori T,Makuuchi H,Higuchi S,Matsushita S,Yoshino K,Maruyama K,Nakano M,Ishii Hdoi
10.1002/(SICI)1097-0142(19960515)77:10<1986::AID-Csubject
Has Abstractpub_date
1996-05-15 00:00:00pages
1986-90issue
10eissn
0008-543Xissn
1097-0142pii
10.1002/(SICI)1097-0142(19960515)77:10<1986::AID-Cjournal_volume
77pub_type
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