Traditional Serrated Adenoma
Traditional Serrated Adenoma (TSA): TSA is the least common subtype among serrated lesions and makes up less than 1% of all colorectal polyps. They are small and usually found in distal colon. They are pedunculated, have villiform architecture and resemble tubulovillous adenomas. Image courtesy of: Bjorn Rembacken, MD; Used with permission.
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