Yumiko B. Oguro

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PURPOSE This study was undertaken to clarify the indications for endoscopic treatment. METHODS Clinical and pathologic features of 191 lesions in 180 patients with early rectal carcinoma were examined, including 110 intramucosal carcinomas and 81 carcinomas with submucosal invasion (submucosal carcinomas). All lesions had been endoscopically or surgically(More)
Fundic gland area gastric polyps in familial polyposis coli (FPC) were compared with those in non-familial polyposis coli clinicopathologically to elucidate their histogenetic and biological characteristics. Some differences were observed in age, sex, and radiological and endoscopical features. Although the polyps were similar histologically, they showed an(More)
We report the effective clinical use of endoscopic laser in Japan using the results of a nationwide survey and our own experience with more than 100 cases. The Nd:YAG laser and argon dye laser with hematoporphyrin derivative (photodynamic therapy) were most commonly used in digestive endoscopy and were investigated as new modalities of cancer therapy.(More)
Between 1986 and 1991, 31 patients having tubular adenocarcinoma with low cellular and structural atypism ("very well differentiated tubular adenocarcinoma:" tub 0) underwent surgery at the National Cancer Center Hospital (NCCH). Histologically, the 31 lesions in the 31 patients were very similar to those observed in gastric adenoma (World Health(More)
From a spontaneous AKR/Ms thymic leukemia symbiotically cultured with thymic epithelial reticular cells, a tumor promoter-dependent cell line A65T was established by passaging the cells in medium containing 12-O-tetradecanoylphorbol-13-acetate (10 ng/ml). The in vitro growth of A65T was strictly dependent on the presence of active tumor promoters. Their(More)
A comparative study of local interstitial hyperthermia induced by low power Nd:YAG laser (laser hyperthermia) and microwave hyperthermia was carried out in vivo and in vitro in an attempt to clarify the therapeutic effect and the mechanism. Both therapies, after seven days, caused marked amounts of coagulated necroses in the transplanted tumors of human(More)
It is well known that the sodium thiosulfate (STS) decrease not only the nephrotoxicity which is a dose limiting factor of cisplatin (CDDP) chemotherapy but also its antitumor activity. Therefore, we examined the antitumor effect of CDDP in the human gastric cancer cell lines under various concentrations of STS. The cell lines used were KATO-III, MKN 28,(More)
We conducted a case-control study to evaluate the effect of Helicobacter pylori (HP) infection on the risk of gastric cancer in Tokyo, Japan. The sera at the time of diagnosis from 282 gastric cancer cases and 767 sex- and age-matched cancer-free controls were tested for the presence of anti-HP IgG antibody (HM-CAP ELISA kit) and serum pepsinogen (PG) level(More)