Treatment of Gastrointestinal Polyps in Cowden Syndrome
Patients with Cowden syndrome frequently develop gastrointestinal polyps of varying histological types. Because the syndrome is associated with an elevated risk of colorectal cancer compared to the general population, the management of these polyps — particularly those considered precancerous lesions — requires a structured, evidence-informed approach.
Clinical scenario
Gastrointestinal polyps detected in a patient with confirmed Cowden syndrome, including adenomatous and hamartomatous subtypes, as well as polyps complicated by bleeding or obstruction.
Treatment approach — partial overview
The protocol centres on endoscopic resection, with specific indications based on polyp type, size, and the presence of complications. Not all polyps are managed identically — resection criteria differ between adenomatous and hamartomatous lesions, and certain clinical presentations require more urgent intervention.
Full resection thresholds, size-based decision criteria, and the complete management algorithm are available in the structured protocol below.
References
- As the risk of developing colorectal cancer is higher in patients with this syndrome than in the general population, resection of colorectal polyps, which are considered precancerous lesions, is weakly recommended.
- Although there is no existing evidence to confirm whether polypectomy is indicated for this disease, adenomatous polyps that are 6 mm or larger in size should be removed as in sporadic adenomatous polyps.
- Hamartomatous polyps 10 mm or larger in size should be removed according to the treatment strategy for hamartomatous polyps in other gastrointestinal polyposis syndromes.
- However, cases of bleeding from gastric and colonic polyps and intestinal obstruction in the small and large intestines have been reported; therefore, polyps that cause bleeding or intestinal obstruction should be endoscopically resected.
DOI: 10.23922/jarc.2023-028
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