Generalized juvenile polyposis/juvenile polyposis coli
- Synonyms
- Juvenile polyposis coli
- Modes of inheritance
- Autosomal dominant inheritance (Orphanet)
Summary
Excerpted from the GeneReview:Juvenile polyposis syndrome (JPS) is characterized by predisposition to hamartomatous polyps in the gastrointestinal (GI) tract, specifically in the stomach, small intestine, colon, and rectum. The term "juvenile" refers to the type of polyp rather than to the age of onset of polyps. Most individuals with JPS have some polyps by age 20 years; some may have only four or five polyps over their lifetime, whereas others in the same family may have more than 100. If the polyps are left untreated, they may cause bleeding and anemia. Most juvenile polyps are benign; however, malignant transformation can occur. Risk for GI cancers ranges from 11% to 86%. Most of this increased risk is attributed to colon cancer, but cancers of the stomach, upper GI tract, and pancreas have also been reported. A combined syndrome of JPS and hereditary hemorrhagic telangiectasia (HHT) is present in most individuals with an SMAD4 pathogenic variant.
- Full text of GeneReview (by section):
- Summary
- GeneReview Scope
- Diagnosis
- Clinical Characteristics
- Genetically Related (Allelic) Disorders
- Differential Diagnosis
- Management
- Genetic Counseling
- Resources
- Molecular Genetics
- Chapter Notes
- References
- Authors:
- Joy Larsen Haidle
- Suzanne P MacFarland
- James R Howe
- view full author information
Available tests
134 tests are in the database for this condition.
Check Related conditions for additional relevant tests.
Clinical tests (134 available)
Biochemical Genetics Tests
- NCI PDQ, Genetics of Colorectal CancerGenetics of Colorectal Cancer (PDQ®): Health Professional Version
- NCI PDQ, Cancer Genetics CounselingCancer Genetics Risk Assessment and Counseling (PDQ®): Health Professional Version
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