File:Adenocarcinoma of the Sigmoid Colon (longitudinal section, closeup).jpg

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Adenocarcinoma of the Sigmoid Colon (longitudinal section, closeup)

The closeup of the longitudinal section shows that the tumor, despite its unimpressive size, demonstrates evidence of superficial invastion of the muscularis propria.

Microscopically, the deep aspect of the tumor consisted of a mucinous component. Free-floating tumor cells were present in mucin lakes in the deep muscularis propria, and one of the acellular mucin lakes actually penetrated completely through the muscle along a neurovascular bundle. For staging, I was faced with deciding whether the presence of mucin alone constituted full-thickness invasion (T2 versus T3), Ultimately I was impressed with the aggressive behavior of such a small tumor, so I opted to stage it as T3.
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Source Adenocarcinoma of the Sigmoid Colon (longitudinal section, closeup)
Author Ed Uthman from Houston, TX, USA
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This image was originally posted to Flickr by euthman at https://www.flickr.com/photos/78147607@N00/429404748. It was reviewed on 22 June 2013 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-2.0.

22 June 2013

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Date/TimeThumbnailDimensionsUserComment
current18:22, 22 June 2013Thumbnail for version as of 18:22, 22 June 20134,288 × 2,848 (3.38 MB)Jacopo Werther (talk | contribs)Original High-resolution image with EXIF Data
08:47, 22 March 2007Thumbnail for version as of 08:47, 22 March 20071,024 × 680 (195 KB)Patho (talk | contribs)== Summary == {{Information |Description='''Adenocarcinoma of the Sigmoid Colon (longitudinal section, closeup)''' The closeup of the longitudinal section shows that the tumor, despite its unimpressive size, demonstrates evidence of superficial invastion

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