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Small bowel hemorrhage: angiographic localization and intervention
C L Tillotson1, S C Geller, L Kantrowitz
1Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston 02114.
Insights
Mesenteric angiography effectively locates occult small bowel bleeding in patients. This diagnostic imaging technique identifies bleeding sources even without active contrast extravasation, aiding in diagnosis.
Area of Science:
- Gastroenterology
- Radiology
- Vascular Imaging
Background:
- Occult small bowel bleeding presents a diagnostic challenge.
- Accurate localization is crucial for effective patient management.
Purpose of the Study:
- To evaluate the utility of mesenteric angiography in localizing occult small bowel hemorrhage.
- To determine if active bleeding is required for successful localization.
Main Methods:
- Mesenteric angiography was performed on 64 patients with suspected occult small bowel bleeding.
- Patients were categorized based on the presence (Group 1, n=38) or absence (Group 2, n=26) of contrast extravasation.
- Non-extravasation findings suggestive of bleeding were analyzed in Group 2.
Main Results:
- Mesenteric angiography successfully localized bleeding sites in all patients.
- Contrast extravasation identified the source in 38 patients.
- In 26 patients, other angiographic findings, without active extravasation, indicated the bleeding source.
Conclusions:
- Mesenteric angiography is a valuable tool for localizing occult small bowel bleeding.
- Active bleeding is not a prerequisite for successful diagnosis using mesenteric angiography.
- Non-extravasation findings provide crucial diagnostic information in suspected small bowel hemorrhage.
Abstract:
Occult bleeding in the small bowel was localized with mesenteric angiography in 64 patients. Two groups of patients were identified. In the first group comprising 38 patients, bleeding sites were localized by the demonstration of contrast extravasation. In the second group of 26 patients, there was no extravasation. However, other angiographic findings suggested the source of bleeding. No active bleeding was necessary for a positive study in the second group. We conclude that in patients with suspected occult small bowel hemorrhage, mesenteric angiography helps localize the bleeding site. Clinically active bleeding is not always necessary, as angiographic findings other than extravasation may localize the source of hemorrhage.