Angiodysplastic lesions on histology appear as ectatic, thin-walled blood vessels in mucosa or submucosa.  Histopathologic findings on resected specimen are diagnostic.
What is the explanation or understanding of the abnormal physiology of angiodysplasia?
<s>[INST] Answer the question truthfully, you are a medical professional. This is the question: What is the explanation or understanding of the abnormal physiology of angiodysplasia? [/INST] \n Angiodysplastic lesions on histology appear as ectatic, thin-walled blood vessels in mucosa or submucosa.  Histopathologic findings on resected specimen are diagnostic.</s>