25.3 MB (388.8 KB compressed)
3254 x 2717 pixels
27.4 x 23.1 cm ⏐ 10.8 x 9.1 in (300dpi)
ZEPHYR / SCIENCE PHOTO LIBRARY ZEPHYR / SCIENCE PHOTO LIBRARY
Intestinal polyp. Coloured virtual colonoscopy (VC) image of a sessile (non-stalked) polyp in the colon of the large intestine of a 39-year-old patient. A VC is constructed from 3D CT (computed tomography) scans and is used to diagnose bowel disease. Polyps are benign (non-cancerous) growths that arise from mucous membranes. Although benign, polyps are generally removed surgically as their growth may obstruct the passage of food, and some polyps may turn cancerous over time.
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