Human pathology

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juvenile polyp

colorectal juvenile polyp, rectal juvenile polyp

Juvenile polyps are hamartomatous polyps found primarily in infants and children.

Predisposition

- juvenile polyposis (JP) (MIM.174900) (MADH4 and BMPR1A mutations)
- Cowden syndrome (CS) (MIM.158350) (PTEN mutations)
- Bannayan-Riley-Ruvalcaba syndrome (BRRS) (MIM.153480) (PTEN mutations)
- neurofibromatosis type 1 (NF1) (15150783)

NB: Although solitary juvenile polyps are benign lesions, but when present in juvenile polyposis (JP), they may lead to gastrointestinal cancers.

References

- Merg A, Howe JR. Genetic conditions associated with intestinal juvenile polyps. Am J Med Genet C Semin Med Genet. 2004 Aug 15;129(1):44-55. PMID: 15264272