Angiodysplasia of the colon occurs when blood vessels in the colon enlarge. They may become fragile and result in occasional bleeding in the gastrointestinal (GI) tract.

Normal Anatomy of the Intestines
Normal Anatomy of the Large and Small Intestine
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Angiodysplasia of the colon is caused by dilated connections between veins and capillaries or arteries in the large intestine (colon)

  • The tendency for abnormal blood vessel connections increases with age
  • Colon spasms may contribute to enlargement of blood vessels in the area