since earlier investigations have shown an increased frequency of mandibular osteomas in familial polyposis coli , the cancer family syndrome , and colorectal cancer without known familial disposition , it is concluded that the etiology of colorectal carcinoma in ulcerative colitis is not , as for these diseases , a combination of the same genetic and environmental factors but probably only a function of the duration and involvement of the disease .
C0032580
familial polyposis coli
C0009402
colorectal carcinoma