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| View Original: | Villous adenoma of the sigmoid colon, gross pathology.jpg (650x432) | |||
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| Keywords: Villous adenoma of the sigmoid colon, gross pathology.jpg Another case of villous adenoma of the transverse colon this one more discrete and polyp-like than the case above Although it had a semi-decent stalk it was still far too large for safe removal by endoscopy so the surgeon was called in to do a segmental resection of the colon Prior to photographing the specimen was pinned out in formalin and fixed overnight The pink color in the center of the mass indicates that the formalin did not penetrate the whole lesion Shame on me for being chintzy with the formalin Note how the surface texture of the villous adenoma differs markedly from that of the surrounding colonic mucosa The photo above was shot with a Nikon D100 digital SLR with Sigma 50mm f/2 8 macro lens I stopped the diaphragm way down about f/22 to bring as much of this very three-dimensional lesion as possible into focus In Photoshop I resized the image for Web display sharpened the 'L' channel in Lab mode and used the Levels command to brighten it a bit Since many Web users now have flat-panel displays not as bright as CRTs and use their monitors in full room lighting I like to brighten up pictures more than I would for an image that was meant for projection in a properly darkened lecture hall Photography by Ed Uthman MD Public domain Posted 27 May 01; updated 20 Feb 05 http //web2 airmail net/uthman/specimens/index html PD Ed Uthman Gross pathology of neoplasms | ||||
