| Front | What is the association between aspirin and colon polyps? |
| Back | A polyp with a p53 mutation must express high levels of COX to procede to carcinoma. Aspirin impedes this progression. |
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| Front | What is intussusception? Where and why does it happen? |
| Back | When a proximal segment of bowel telescopes into a distal segment. Usually occurs at the ileocecal junction (the terminal ileum slides into the cecum). Occurs as a result of a point of "traction" in the bowel. Children -- usually from a viral infection (rotavirus, adenovirus) causing lymphoid hyperplasia. Adults -- usually from a tumor or mass. |
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| Front | What does PAS stain for? |
| Back | Glycoprotein. Used to detect polysaccarides of fungal cell walls, mucosubstances from epithelia, and basement membranes. Clinically seen in Whipple's disease, which has T. whippeli inside macrophages, which stain with PAS+. |
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