Pathological features of malignant colorectal polyps: a five-year descriptive retrospective study

Tarathep Wongsuriyathai; Wiyada Dankai; Sarawut Kongkarnka; Chanakrit Boonplod; Komson Wannasai

doi:10.5114/pg.2025.156787

eISSN: 1897-4317
ISSN: 1895-5770

Gastroenterology Review/Przegląd Gastroenterologiczny

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4/2025
vol. 20

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abstract:

Original paper

Pathological features of malignant colorectal polyps: a five-year descriptive retrospective study

Tarathep Wongsuriyathai

¹

,

Wiyada Dankai

²

,

Sarawut Kongkarnka

²

,

Chanakrit Boonplod

¹

,

Komson Wannasai

²

Medical Student, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
Department of Pathology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand

Gastroenterology Rev 2025; 20 (4): 387–394

DOI: https://doi.org/10.5114/pg.2025.156787

Online publish date: 2025/12/07

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Introduction
Malignant polyps are primarily adenocarcinomas arising from adenomatous polyps, with the potential to metastasize to regional lymph nodes and distant sites. In our institute, significant gaps in knowledge about the histopathological characteristics of malignant colorectal polyps continue to exist despite their recent increase in prominence.

Aim
This study aims to describe the demographic and pathological features of malignant polyps and investigate the correlation between the Haggitt level and various parameters.

Material and methods
This retrospective study included patients who underwent colonoscopy and polypectomy with the diagnosis of adenocarcinoma arising from an adenomatous polyp between January 2018 and December 2022.

Results
The correlation between the Haggitt level and variables was assessed using the 2 test. The study included 53 patients with a 2 : 1 male-to-female ratio and a mean age of 66 years. Malignant polyps were primarily located in the sigmoid colon and rectum. The presence of lymphatic and perineural invasion was correlated with a deeper level of invasion.

Conclusions
The rectosigmoid colon is the predilection site for malignant polyps, and a deeper level increases the risk of lymphatic and perineural invasion.

keywords:

Pathological features of malignant colorectal polyps: a five-year descriptive retrospective study

Tarathep Wongsuriyathai 1 , Wiyada Dankai 2 , Sarawut Kongkarnka 2 , Chanakrit Boonplod 1 , Komson Wannasai 2

malignant polyps, adenocarcinomas, Haggitt levels, lymphatic invasion, perineural invasion

Tarathep Wongsuriyathai

¹

,

Wiyada Dankai

²

,

Sarawut Kongkarnka

²

,

Chanakrit Boonplod

¹

,

Komson Wannasai

²