File:Villous Adenoma of the Sigmoid Colon.jpg

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4x2.5x1.9-cm villous adenoma.

After fixing the opened and pinned-out colon resection specimen overnight in formalin, I covered it with reagent alcohol to shoot the photograph. Tissue sinks in alcohol, so you don't have to pin it down to the bottom of the container to keep it from floating to the surface. Also, it may be my imagination, but it seems to me that alcohol is a clearer medium that water.

The entire lesion was processed and examined microscopically. It consisted entirely of non-invasive adenoma with a predominantly villous architecture. Severe dysplasia was limited to a 0.3-cm focus near the apical aspect of the mass.
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Source originally posted to Flickr as Villous Adenoma of the Sigmoid Colon
Author Ed Uthman
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This image, which was originally posted to Flickr, was uploaded to Commons using Flickr upload bot on 22 September 2008, 18:46 by Jacopo Werther. On that date, it was confirmed to be licensed under the terms of the license indicated.
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current18:46, 22 September 2008Thumbnail for version as of 18:46, 22 September 20083,872 × 2,592 (4.32 MB)Flickr upload bot (talk | contribs)Uploaded from http://flickr.com/photo/78147607@N00/2653200355 using Flickr upload bot

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