Gastrointestinal stromal tumor in jejunum: diagnosis using contrast-enhanced ultrasonography and double-balloon enteroscopy.
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Aged↗
Biomedical subjects
Madoka Nakao
Publications and source records attributed to Madoka Nakao.
Double-balloon enteroscopy in patients with GI bleeding of obscure origin.
BACKGROUND: Small-bowel bleeding is difficult to treat and diagnose. The recent introduction of wireless capsule endoscopy permits examination of the entire small intestine, but this method lacks tissue sampling and therapeutic capabilities. Recently, Yamamoto et al established a double-balloon insertion method for enteroscopy that allows examination of the entire small bowel and interventional options. OBJECTIVE: To evaluate double-balloon enteroscopy in patients with obscure GI bleeding. SETTING: Single-center prospective study. PATIENTS: Thirty-one consecutive patients with obscure GI bleeding (13 females, 18 males; mean age 56.4 +/- 3.2 years). Criteria for inclusion in the study were documented iron deficiency anemia (hemoglobin level <10 g/dL or a decrease of >2 g/dL over > or =2 months); upper endoscopy not revealing a site/cause of blood loss; and similarly uninformative lower endoscopy including examination of the terminal ileum. INTERVENTIONS: Endoscopic biopsy or therapy was performed as clinically indicated. MAIN OUTCOME MEASUREMENTS: Diagnostic yield for patients with obscure GI bleeding and patient follow-up. RESULTS: Double-balloon enteroscopy was completed without complications in all patients. Bleeding points were identified in 23 patients (74.2%). In 21 (91.3%) of these 23 patients the cause of blood loss was identified and treated with no further bleeding at 8.5 +/- 0.6 months of follow-up. LIMITATIONS: Small number of patients. CONCLUSIONS: These data suggest that double-balloon enteroscopy is useful for evaluation and treatment of patients with GI bleeding of obscure origin.
Adolescent↗
Multiple carcinoid tumors of the ileum preoperatively diagnosed by enteroscopy with the double-balloon technique.
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Carcinoid Tumor↗
Initial experience with catheter probe US when using a multibending endoscope.
BACKGROUND: High-frequency catheter probe US provides detailed images when the scanning plane is perpendicular to the area of interest and the latter is within the focal zone. A multibending endoscope has been developed that has two bending sections that can be deflected independently. The aim of this study was to determine whether this new endoscope enhances high-frequency catheter probe US. METHODS: High-frequency catheter probe US was performed with the multibending endoscope in 33 patients with upper-GI lesions. The endoscope was carefully maneuvered until the scanning plane was perpendicular to the area of interest and the target area was within the focal zone of the probe. The effects of deflecting the second bending section on the image and on the rotating elements in the probe were evaluated. RESULTS: For 28 lesions, no improvement was observed with use of both bending sections. However, for 5 lesions, the US image was improved by use of the second bending section. These lesions were located in the stomach on the lesser or greater curve. In no instance did deflection of both bending sections result in uneven rotation of the mechanical elements in the probe. CONCLUSIONS: For certain lesions, US images obtained with a catheter probe can be improved by using an endoscope with a second bending section.
Catheterization↗