Abstract
The purpose of the investigation is to ascertain the feasability of the endoscopic cure of the gastric polyp or polyposis without surgical operation using high frequency current and to study the relationship between the hyperplastic polyp and cancer of the stomach. 230 patients with gastric polyp or polyposis were examined and in 281 instances, polypectomy was done using high frequency current (spark-gap type apparatus) and Machida type 2-channel fibergastroscope PFS-F type. In 64 instances, small sized poylps, the polyps were cauterized by the same method. There were 345 polyps thus treated. These polyps included sessile type 173 polyps and pedunculated 171 polyps. Results: Polypectomy was done for 281 polyps and 274 samples were obtained (97.5%); 7 samples were lost after polypectomy. There were 211 polyps diagnosed as the hyperplastic polyp by direct biopsy. In these polyps, the histological examination of the removed polyps revealed that 193 to be hyperplastic polyp (90.6%), 3 to be polyp cancer and 14 to be gastritis polyposa. There were 55 samples which was diagnosed as gastritis by gastric biopsy. In these, 27 were gastritis polyposa (49.1 %), 20 were hyperplastic polyp, one was atypical epitherium, one fibroid, one fibroid polyp and one aberration tissues by the examination of the removed polyp. There were 5 atypical epitherium group III diagnosed by biopsy. Examination of the removed polyps however revealed one adenocarcinoma tubulare. One atypical epitherium group IV diagnosed by biopsy was so confirmed by the histological examination of the removed polyp lesion. Conclusion: It was concluded that the endoscopic polypectomy for polyps of the stomach can be done safely using high frequency current. It was felt that the method can substitute the surgical operation in this particuler lesion. The removal of the polyp as a whole offered unique opportunity to compare the biopsy findings with the histological whole tissue examination, showing the importance of the removal of the whole polyp as evidenced by the presence of polyp cancer in 1.4 % of hyperplastic polyps.
