In order to raise the accuracy among radiologists, cases where evident lesions were undetected were presented. For each case of diagnosed advanced gastric cancer by group exam, indirect fluororadiography taken each year up to 3 years before diagnosis were read again. Among advanced gastric cancer cases diagnosed by group exam over 6 years from 2004 to 2009, 44 cases that received medical checkups at this facility from the time cancer was diagnosed until 3 years before, were determined as continuous examinations, and targeted for consideration. Cases where evident lesions were undetected were set as sample cases.
The results of the consideration showed that in 20 (45.5%) out of 44 cases evident lesions were undetected. Cases at a higher rate were in the posterior wall and in type three. Even advanced gastric cancers, diagnosis can be made based on minor findings, such as indirect findings. Careful and detailed reading of an X-ray should be carried out with full understanding of these matters.

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We compared the immunological and chemical methods to confirm the individual detection limits of various animal hemoglobins in the fecal occult blood test by using the hemolyzed hemoglobin solution and hemoglobin added artificial feces. The hemolyzed hemoglobin solution showed that the immunological method is highly specific and quantitative for human hemoglobin, but the chemical method has reactivity not only for human, but also animal hemoglobin. The hemoglobin added artificial feces showed that there is no apparent difference in the detection limits between the immunological method and the chemical method. In addition, the immunological method showed about 2% cross-reactivity with the bovine hemoglobin by both assays of the hemoglobin solution and hemoglobin added artificial feces.
The immunological method never attained the positive result of the assay in the animal hemoglobins even at a high concentration of 1000mcg/g artificial feces.

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Polyethylene glycol (PEG) is used in colonoscopy as a preliminary treatment, but the effects of its taste, smell, and dose on patients are unpleasant. In this study, in order to reveal whether the amount of medication can be reduced in the same manner as sodium phosphate tablets (Group A), we performed a prospective test comparing half-dose administrations of PEG (Group B) and magnesium citrate (Group C). As a result, it was revealed that patient acceptability evaluations were significantly superior in Group A compared to those of Group B. Moreover, Group A was observed to have significantly higher acceptability compared to the other groups when comparing ease in taking agents for bowel-cleanser in patients undergoing colonoscopy. On the other hand, in the evaluation of the bowel cleansing effect, a good bowel cleansing effect was observed in approximately 90% of patients in all administration groups, with no significant differences observed among the 3 Groups.
From the above, it was considered that administering half of the specified dosage with the concomitant use of food for colonoscopy and laxatives may improve patients’ acceptance of sodium phosphate tablet by maintaining the cleansing effect.

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