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Orthopantomography of the mandible was carried out on 50 patients with colorectal cancer without known familial disposition. Twelve patients (24%) had osteomas, as against 5% in the control group (P less than 0.001). Since an increased occurrence of mandibular osteomas has earlier been demonstrated in cases of familial polyposis coli and the family cancer(More)
Many attempts have been made to find a marker of the dominant gene in the heritable colon cancer syndromes, in order to detect family members at Consequently Gardner's syndrome is considered as a clinical variation of FPC (Billow et al., 1984). An increased incidence of tetraploidy in cultured skin fibroblasts has been described in patients with Gardner's(More)
Forty-seven Danish and 50 Finnish patients with familial adenomatous polyposis coli (FPC) were studied by panoramic tomography (PTG) of the mandible, which showed dental abnormalities in 17% of the cases. Eleven patients (11%) had supernumerary teeth and/or compound osteomas, and nine patients (9%) had impacted permanent teeth. The frequency of the dental(More)
Orthopantomograms of the mandible were performed on 46 patients with familial polyposis coli having no clinical signs of Gardner's syndrome and on 46 control patients matched according to age and sex. Thirty-five patients (76.1 per cent) and two (4.3 per cent) controls had osteomas (P less than 0.0005). It is concluded that orthopantomography of the(More)
Orthopantomography of the mandible (OTM) showed osteomas in 3 of 34 non-affected sibs and children of the probands in 14 families with polyposis coli. The observed to expected ratio with osteomas was 0.35, which is not significantly lower than 1.0 and in accordance with the frequency in the normal population. Although the result does not enable a definite(More)
Orthopantomography of the mandible was carried out on 50 patients with colorectal adenoma(s) without carcinoma or any known familial disposition. Four patients (8%) had osteomas, and we advance the hypothesis that individuals with both osteomas and adenomas represent a separate type of adenoma patient. Further studies are needed to evaluate the prognostic(More)