Other gastric polyps, including hyperplastic polyp
and fundic gland polyp, are less likely in the differential because these are predominantly "mucosal-based" polyps.
The proportions of hyperplastic polyp
(HP), sessile serrated adenoma/polyp (SSA/P), and traditional serrated adenoma (TSA) of all serrated polyps were 41.
A hyperplastic polyp
may not change the screening interval, whereas a tubulovillous adenoma may require a repeat colonoscopy in less than a year.
The characteristic microscopic feature of a hyperplastic polyp
is the serrated or saw-tooth configuration of the crypt epithelium.
8 were investigated with colonoscopy and this group had 13 cancers, eight adenomas and one hyperplastic polyp
Distinguishing between hyperplastic polyp
, sessile serrated adenoma, and traditional serrated adenoma is not only very challenging, the distinctions have important clinical implications.
1 patient had a hyperplastic polyp
and 1 patient had a lipoma.
Two German pathologists, Feyrter in 1929 (3) and Westhues in 1934, (4) are credited as being the first to use the term hyperplastic polyp
in German-language literature.
Currently, 3 types of serrated polyps are acknowledged in the fourth edition (2010) of the World Health Organization (WHO) Classification of Tumors of the Digestive System (18): hyperplastic polyp
(HP), sessile serrated adenoma/polyp (SSA/P), and traditional serrated adenoma (TSA).
6-8,20) The serrated polyp family members include the microvesicular hyperplastic polyp
, goblet cell-rich hyperplastic polyp
, traditional serrated adenoma, filiform serrated adenoma, and SSA/P.
One does not assign different RVUs to a colon biopsy that is positive for malignancy and one that shows a hyperplastic polyp
because one diagnosis has more important implications than the other.
In two-thirds of the cases, the trapped crypts have serrated architecture, so they have an appearance identical to the crypts in a hyperplastic polyp
(Figure 2, B).