49,294
edits
Difference between revisions of "Gastrointestinal tract polyps"
Jump to navigation
Jump to search
Gastrointestinal tract polyps (view source)
Revision as of 11:01, 28 September 2012
, 11:01, 28 September 2012→Micro: +TVA
m (→Grading: format) |
(→Micro: +TVA) |
||
| Line 519: | Line 519: | ||
A small number of rare finger-like epithelial projections (villi) are noted; however these appear to comprise less than 20% of the sampled tissue. It is possible that the villous component is higher, due to sampling error; thus, this could represent a tubulovillous adenoma. | A small number of rare finger-like epithelial projections (villi) are noted; however these appear to comprise less than 20% of the sampled tissue. It is possible that the villous component is higher, due to sampling error; thus, this could represent a tubulovillous adenoma. | ||
=====Tubulovillous adenoma===== | |||
The sections shows colorectal-type mucosa with a tubule-forming and villous-forming epithelium that has cellular pseudostratification and enlarged hyperchromatic nuclei, from the crypt base to the luminal aspect (dysplasia). | |||
No cribriforming of glands, epithelial budding or intraluminal papillary tufting is identified. Goblet cells are rare in the dysplastic epithelium. Dysplastic nuclei have an ellipsoid-shape and basally stratified. | |||
The villous component is over 25% of the lesion but less than 50% of the lesion. | |||
==Traditional serrated adenoma== | ==Traditional serrated adenoma== | ||