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Angiodysplasia of the Gastrointestinal Tract


Angiodysplasia occurs when blood vessels in the gastrointestinal (GI) tract become swollen. The swelling can weaken the blood vessels and cause bleeding. Angiodysplasia can occur in any part of the GI tract, but most often occurs in the colon.


Return to the emergency department if:

  • You have heavy bleeding from your rectum.
  • You have shortness of breath.
  • You vomit blood.
  • Your abdomen is larger than usual and very painful.

Contact your healthcare provider if:

  • You have dark or bloody bowel movements.
  • You feel very tired and weak.
  • You have nausea.
  • You have questions or concerns about your condition or care.


  • Medicines , such as hormones, may be given to help slow or stop the bleeding. Your healthcare provider may recommend iron supplements to help treat or prevent anemia.
  • Take your medicine as directed. Contact your healthcare provider if you think your medicine is not helping or if you have side effects. Tell him of her if you are allergic to any medicine. Keep a list of the medicines, vitamins, and herbs you take. Include the amounts, and when and why you take them. Bring the list or the pill bottles to follow-up visits. Carry your medicine list with you in case of an emergency.

Follow up with your doctor as directed:

Write down your questions so you remember to ask them during your visits.

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The above information is an educational aid only. It is not intended as medical advice for individual conditions or treatments. Talk to your doctor, nurse or pharmacist before following any medical regimen to see if it is safe and effective for you.

Learn more about Angiodysplasia of the Gastrointestinal Tract (Aftercare Instructions)

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Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.