Colonic polyps are one of the most risky factors for colon cancer. The pathology of the specimen obtained by forceps biopsy does not represent the whole specimen of the polyp obtained by polypectomy ro surgery in some cases. To evaluate these
pathologic
differences, we analysed the 39 patients with colonic polyps who underwent forceps biopsy and polypectomy.
1) The mean age was 53.6% years and the ratio of male to female was 2.5:1
2) 31 patients had single polyp and 8 patients had multiple polyps.
3) The sizes of polyps were under 1cm in 7 cases(18%), 1 to 2cm in 20 cases(51%), and more than 2cm in 12 cases(31%).
4) Yamada type of the polyps were type I in 2 cases(5%), type II in 1 case (3%), type III in 3 cases (8%), and type IV in 33 cases (85%).
5) The mean sample number of the tissue obtained by forceps biopsy was 3.2.
6) Pathologic findings of forceps biopsy were consistent with that of polypectomy in 30 cases (77%) out of 39 cases.
7) Out of 27 adenomatous polyps with forceps biopsy, one case(4%) turned out to have adenocarcinoma. Out of 11 non-neoplastic polyps with forceps biopsy, 3 cases (27%) turned out to have adenomatous polyps(2 cases) and to have adenocarcinoma(1
case).
In conclusion, pathologic findings of the specimen obtained by forceps biopsy is not consistent with that by polypectomy in some cases. Thus it is concluded that polypectomy is necessary for all cases. If polypectomy is impossible initially,
laserphotocoagulation or electrocoagulation after forceps biopsy or strip biopsy is recommended.
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