How is the cause of lower gastrointestinal (GI) bleeding diagnosed in children older than 2 years?

Updated: Dec 19, 2018
  • Author: Wayne Wolfram, MD, MPH; Chief Editor: Robert K Minkes, MD, PhD  more...
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Answer

Vascular lesions include a wide variety of malformations, including hemangiomas, arteriovenous malformations, and vasculitis. If these lesions are located in the colon, colonoscopy may be diagnostic and therapeutic. However, brisk bleeding may obscure the visual field, making localization the bleeding impossible. Arteriography assists in localizing the source and embolizing the feeding vessel.


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