ENDOSCOPIC ULTRASONOGRAPHY OF DUODENAL BULB
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概要
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To clarify the wall structure of the duodenal bulb, endoscopic ultrasonograms of the bulb were compared to the histological findings in 10 cases of autopsied materials. Endoscopic ultrasonography (EUS) was performed in 32 cases with duodenal ulcer. The instrument employed was GF-UM3 and JF-UM3 (Olympus). The results were as follows; 1. Comparison of endoscopic ultrasonograms and histological findings of the duodenal bulb in autopsied materials. 1) In all cases, the wall of normal duodenal bulb was ultrasonographically recognized as five layers in its structure as seen in the other GI tract walls. 2) Hyperechoic sports were visualized in the second layer and thought to be composed of Brunner's glands. 2. Clinical study of EUS in cases with duodenal ulcer. 1) Ulcer depth in the duodenal bulb could be evaluated by EUS in almost all cases. In cases with duodenal ulcer at the healing or scarring stage in the endoscopic diagnosis, the fusion of the second layer and fourth layer could be recognized. 2) The destruction of the five-layer structure was visualized in the ridge with duodenal linear ulcer. Furthermore, hyperechoic and hypoechoic spots were mixed in the ridge. These findings have not been altered by follow-up study in 2 cases with ridge of the bulb. In conclusion, the present study suggests that recurrence of duodenal ulcer may often occur on the ridge. However, an additional study by EUS will be necessary in more cases with linear ulcer, to clarify the cause and characteristics of the ridge formation.
- 社団法人 日本消化器内視鏡学会の論文
社団法人 日本消化器内視鏡学会 | 論文
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