Traditional serrated adenoma
Appearance
Traditional serrated adenomas | |
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Traditional serrated adenoma with intermediate magnification, showing serrated crypts and cytologic atypia (H&E stain). | |
Specialty | Gastroenterology |
Symptoms | Asymptomatic |
Complications | Colorectal cancer |
Usual onset | >50 years of age |
Diagnostic method | Colonoscopy |
Treatment | Polypectomy |
Frequency | <1% of all colon polyps |
Traditional serrated adenomas (TSA) is a premalignant type of polyp found in the colon, often in the distal colon (sigmoid, rectum). TSAs are a type of serrated polyp, and may occur sporadically or as a part of serrated polyposis syndrome. TSAs are relatively rare, accounting for <1% of all colon polyps.[1][2] Usually, TSAs are found in the distal colon and are usually less than 10 mm in size.[1]
Histopathology
Traditional serrated adenomas are characterized by ectopic crytps, pseudostratification, and a villous pattern with stretched nuclei.[3]
Epidemiology
Usually found in individuals over the age of 50 years, TSAs affect men and women equally.[1] The overall prevalence of traditional serrated adenomas is less than 1% of the general population.[3]
References
- ^ a b c McCarthy, AJ; Serra, S; Chetty, R (2019). "Traditional serrated adenoma: an overview of pathology and emphasis on molecular pathogenesis". BMJ open gastroenterology. 6 (1): e000317. doi:10.1136/bmjgast-2019-000317. PMID 31413858.
- ^ Kalimuthu, Sangeetha N.; Chelliah, Adeline; Chetty, Runjan (15 December 2016). "From traditional serrated adenoma to tubulovillous adenoma and beyond". World Journal of Gastrointestinal Oncology. 8 (12): 805–809. doi:10.4251/wjgo.v8.i12.805. ISSN 1948-5204. Retrieved 24 June 2020.
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: CS1 maint: unflagged free DOI (link) - ^ a b Crockett, SD; Nagtegaal, ID (October 2019). "Terminology, Molecular Features, Epidemiology, and Management of Serrated Colorectal Neoplasia". Gastroenterology. 157 (4): 949-966.e4. doi:10.1053/j.gastro.2019.06.041. PMID 31323292.