Management of Hyperplastic Polyps Found on Colonoscopy

Risk Stratification Based on Polyp Characteristics

The American College of Gastroenterology and the American Cancer Society recommend that patients with small, distally located hyperplastic polyps should be rescreened as average-risk patients with colonoscopy in 10 years, as these polyps carry no increased risk of colorectal cancer 1, 2
Patients with small hyperplastic polyps in the rectosigmoid region should be rescreened as average-risk patients with colonoscopy in 10 years, as these polyps carry no increased colorectal cancer risk and require no intensified surveillance 3, 1, 2
Large (≥1 cm), sessile, proximally located hyperplastic polyps with atypical architectural features should be completely removed and may warrant surveillance similar to adenomas, as they can progress to microsatellite instability colorectal cancer through the serrated pathway 3, 4, 2

The American Gastroenterological Association defines hyperplastic polyposis syndrome by any of the following: at least 5 hyperplastic polyps proximal to the sigmoid colon, with 2 being >1 cm in diameter, any number of hyperplastic polyps proximal to the sigmoid in a patient with a first-degree relative with hyperplastic polyposis, or more than 30 hyperplastic polyps of any size distributed throughout the colon 3, 4, 5
Patients meeting these criteria have increased colorectal cancer risk and require more intensive surveillance than standard intervals, though optimal management remains under study 3, 4, 5

The American Cancer Society recommends that large solitary hyperplastic polyps in the right colon warrant particular attention as they carry higher malignancy risk, and complete polyp removal, especially for larger or proximal lesions, is essential 4, 2, 6
The American College of Gastroenterology recommends ensuring complete polyp removal, especially for larger or proximal lesions, and documenting polyp characteristics (size, location, number, morphology) clearly in the pathology report to guide surveillance decisions 6

For patients with ≤20 hyperplastic polyps in the rectum or sigmoid colon that are <10 mm, the American Gastroenterological Association recommends follow-up colonoscopy in 10 years (strong recommendation, moderate quality evidence) 7
For patients with ≤20 hyperplastic polyps proximal to the sigmoid colon that are <10 mm, the American Gastroenterological Association suggests follow-up colonoscopy in 10 years (weak recommendation, very low quality evidence) 7
Patients with hyperplastic polyps ≥10 mm should undergo follow-up colonoscopy in 3-5 years (weak recommendation, very low quality evidence) 7
The American Gastroenterological Association recommends complete removal of large (≥1 cm), sessile, proximally located hyperplastic polyps with atypical architectural features, as they can progress to microsatellite instability colorectal cancer through the serrated pathway 8, 9

The American Gastroenterological Association defines hyperplastic polyposis syndrome by the presence of at least 5 hyperplastic polyps proximal to the sigmoid colon, with 2 being >1 cm in diameter, or any number of hyperplastic polyps proximal to the sigmoid colon in a patient with a first-degree relative with hyperplastic polyposis, or more than 30 hyperplastic polyps of any size distributed throughout the colon 8, 9
Patients meeting these criteria have a markedly increased colorectal cancer risk and require specialized management beyond standard surveillance intervals, including frequent colonoscopic surveillance 8, 9

The American Gastroenterological Association assumes that all recommendations are based on examinations complete to the cecum, adequate bowel preparation, and high confidence of complete resection 7
These recommendations do not apply to individuals with hereditary CRC syndromes, inflammatory bowel disease, personal history of CRC, or family history of CRC, where shorter intervals may be warranted 7

Small rectal hyperplastic polyps are considered equivalent to normal colonoscopy findings; the next colonoscopic examination should be scheduled in 10 years. 10
Distal diminutive hyperplastic polyps (1–5 mm) represent 41.2 % of polyps in that size range and exhibit minimal malignant potential. 11, 12, 13

HPS is diagnosed when a patient has more than 30 hyperplastic polyps of any size distributed throughout the colon. 10
Patients who meet HPS criteria have a markedly increased risk of colorectal cancer (approximately 54 % in one series). 10

Surveillance recommendations assume a complete examination to the cecum. 10
Surveillance recommendations assume adequate bowel preparation. 10
Surveillance recommendations assume the endoscopist achieves an adequate adenoma detection rate. 10

Individuals with a personal history of colorectal cancer require modified, more frequent surveillance intervals rather than the standard 10‑year schedule. 10
A family history of colorectal cancer may also necessitate shorter surveillance intervals than the standard recommendation. 10