双语教学

Explain of Gastrointestinal Pathology

107.Colon, villous adenoma, composite gross

The gross appearance of a villous adenoma is shown above the surface at the left, and in cross section at the right. Note that this type of adenoma is sessile, rather than pedunculated, and larger than a tubular adenoma (adenomatous polyp). A villous adenoma averages several centimeters in diameter, and may be up to 10 cm.

（本图片资料来源自美国犹他大学）