No abstract

We report a case of a calcifying fibrous pseudotumor of the stomach that we resected using endoscopic submucosal dissection (ESD). A 61-year-old male with a gastric submucosal tumor was admitted to our hospital for treatment. By upper gastrointestinal tract endoscopy, a smooth-surfaced submucosal tumor measuring 2 cm in diameter was observed in the anterior wall of the middle body of the stomach. By endoscopic ultrasonography, a mass was observed in the stomach submucosa; the mass had a well-defined boundary. Internally, the mass was heterogeneous and hypoechoic; high spots were scattered throughout the mass. Continuity between the mass and the muscularis mucosae and muscularis propria was not observed. Strongly suspecting that this mass was a gastrointestinal stromal tumor arising from the stomach, we resected the mass by ESD for total biopsy. Histopathologically, the mass consisted of proliferation of eosinophilic collagen fibers with plasma cell infiltration and lymphoid follicle proliferation. Calcification was also observed in some parts of the mass. Thus, the mass was identified as calcifying fibrous pseudotumor. Calcifying fibrous pseudotumor of the stomach is extremely rare and its histogenesis remains unclear; however, its morphology became distinct by comparing endoscopic/radiological and histopathological findings.

and are believed to be more useful than X-ray examinations to detect small gastric cancer lesions. Therefore, endoscopy has recently been applied in mass screening for gastric cancer, instead of X-ray examinations, to improve the quality of screening. However, as there are currently limitations in the application of endoscopy for all types of screening for gastric cancer, such as a lack of workers familiar with the technique and complications associated with endoscopic examinations, patients must be selected for mass screening by endoscopy [1]. We investigated how to select individuals for endoscopic examination of gastric cancer screening and the effectiveness of X-ray primary screening before endoscopy. Patients and methodsAll 7942 subjects who underwent upper endoscopy for gastric cancer screening at our hospital between April 2005 and March 2008 were divided into two groups: an X-ray screening group (endoscopy following primary X-ray screening: 2782 subjects; mean age, 51.6 ± 9.4 years; percentage of males, 82.9%) and a GS direct group (endoscopy only: 5160 subjects; mean age, 51.2 ± 9.5 years; percentage of males, 87.2%). Our hospital is an institute for gastric cancer detection surveys and our examinations were performed as mass screening for the general working population. No patients are referred to our hospital following a diagnosis of gastric cancer at other hospitals. Choice of the group was at the discretion of the patients, and the authors did not divide the patients into the two groups. X-ray screening examination was performed according to the standard methods recommended by The Japanese Society of Gastroenterological Cancer Screening (Fig. 1) [2]. Among the total of 38 971 subjects with X-ray screening for gastric cancer during the study period, the recall rate was 10.5%, and 60.0% of these recalled subjects underwent Abstract Background. Gastroendoscopy (GS) has recently been applied in mass screening for gastric cancer, instead of X-ray examination, to improve the quality of the screening. However, as there are currently limitations in the application of endoscopy in all types of screening for gastric cancer, patients must be selected for mass screening by endoscopy. We investigated how to select individuals for endoscopic examination of gastric cancer screening and the effectiveness of X-ray primary screening before endoscopy. Methods. All 7942 patients who underwent upper endoscopy for gastric cancer screening at our hospital between April 2005 and March 2008 were divided into two groups: an X-ray screening group (2782 subjects, endoscopy following primary X-ray screening), and a GS direct group (5160 subjects, endoscopy only). Results. Thirty-seven carcinomas were detected among the 2782 subjects in the X-ray screening group undergoing endoscopy, representing a cancer detection rate of 1.33%. In the GS direct group, 23 carcinomas were detected in the 5160 subjects undergoing endoscopy, representing a cancer detection rate of 0.45%. However, our results suggested that the gastric cancer detec...

No abstract

No abstract