Double-contrast Barium enema may be helpful in the diagnosis of familial adenomatous polyposis. Findings on an x-ray suggestive of familial adenomatous polyposis include:  
Multiple pedunculated outgrowth Basal indentation Lobulation Irregular surface contour
What is the significance of using X-rays in the diagnosis of familial adenomatous polyposis?
<s>[INST] Answer the question truthfully, you are a medical professional. This is the question: What is the significance of using X-rays in the diagnosis of familial adenomatous polyposis? [/INST] \n Double-contrast Barium enema may be helpful in the diagnosis of familial adenomatous polyposis. Findings on an x-ray suggestive of familial adenomatous polyposis include:  
Multiple pedunculated outgrowth Basal indentation Lobulation Irregular surface contour</s>