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)
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)
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 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)
Endoscopic photodynamic therapy has been used in the treatment of 19 cases of upper gastrointestinal cancer of which six were superficial esophageal and 13 were early gastric cancer. Six patients subsequently underwent surgical resection. Residual tumors were found in the resected specimens of one esophageal carcinoma and in the two early gastric(More)
This report describes three patients in whom colonoscopy detected small depressed cancers (without an elevated component) that had invaded the submucosa. They represent 0.4% (3/884) of all patients with invasive cancers and 3% (3/101) of patients with submucosal cancers in the National Cancer Center Hospital between January 1990 and February 1994. This type(More)
Endoscopy is an effective diagnostic technique for gastric cancer, which is believed to be associated with Helicobacter pylori. Manual Hyamine washing is a widely used fiberscope cleaning method. Urease B gene of Helicobacter pylori was detected in 50% of the wash-out samples from the biopsy-suction channel of a fiberscope after manual Hyamine washing by(More)
In order to make the endoscopic diagnosis of early gastric cancer more accurate, we determined the endoscopic and clinicopathological characteristics of the 129 cases of early gastric cancer with less malignant appearance among the 978 cases of the disease with a solitary lesion detected at the National Cancer Center Hospital during the period between 1962(More)
In order to determine the reliability of endoscopic biopsy in diagnosis of early gastric cancer, and to clarify the problems with biopsies, preoperative endoscopic biopsies from 771 early gastric cancer cases were reviewed and analyzed clinicopathologically in comparison with surgically resected specimens. The 771 cancers were surgically resected at the(More)