Usefulness of the Miniature Ultrasonic Probe for Submucosal Tumors of the Large Intestine / 대한소화기내시경학회지

BACKGROUND/AIMS: Endoscopic ultrasonograpy can provide detailed information about gastrointestinal wall structure and adjacent organs. However there have been few studies about submucosal lesions of the large intestine. We evaluated the usefulness of the miniature ultrasonic probe in the submucosal tumors of the large intestine. METHODS: The miniature ultrasonic probe was applied to 25 patients who had suspicious submucosal lesions of the large intestine, by barium enema or colonoscopy. We evaluated the size, internal echogenecity, border characteristics, and layer of origin of the submucosal lesions by endosonographic findings. The endosonographic images of the lesions were compared with the histologic findings. RESULTS: The lipomas (n=9) were visualized as hyperechoic masses and the carcinoids (n=7) were all hypoechoic masses in the 3rd layer. The lymphangiomas (n=6) were visualized as cystic lesions with septal structures. The granulomas (n=2) were hypoechoic or hyperechoic mass in 3rd layer. Leiomyoma (n=1) was hypoechoic mass in the 2nd layer. The overall diagnostic accuracy was 96%. CONCLUSIONS: The miniature ultrasonic probe scanning is useful in the diagnosis of submucosal lesions of the large intestine. It is also a simple and convenient procedure to assess submucosal tumors of the colon during the total colonoscopic procedure.

Corelation between the Finding of Magnifying Endoscopy and Histologic Finding in the Helicobactor Pylori Induced Gastritis / 대한소화기내시경학회지

BACKGROUND/AIMS: This is the study to find diagnostic possibility of the H. pylori induced gastritis by using the magnifying endoscope. METHODS: The objectives were 144 pathologies from 48 patients with gastritis. The three sites of gastric mucosa have been magnified up to 80 times by using the magnifying endoscope. According to the patterns of the collecting venule, they have been classified into 3 patterns; regular (R), irregular (I) and disappearance (D) pattern and biopsy of each part has been performed. Each tissue has been evaluated into five kinds of morphological index (point: 0~3) by using an updated Sydney system. RESULTS: In 144 collecting venule, R, I and D-pattern was 19, 67, 58, respectively. Regarding the total score of morphologic points, the point of R-pattern was less than that of D-pattern (p<0.05). Regarding the infection of H. pyrori, the infection rate was 0%, 53.7%, and 60.3% in each pattern, and infection rate of R-pattern was less than other two patterns (p<0.05). Regarding the activity of neutrophile, R-pattern was less than those of I and D-pattern (p<0.05). CONCLUSIONS: Observance of the collecting venule of the gastric mucosa by magnifying endoscopy is considered to be useful when estimating the inflammation degree and H. pylori infection.