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Key Features

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  • Usually pedunculated and solitary

  • Head of the polyp is composed of hyperplastic glandular and vascular elements, often with cystic transformation

  • Benign and 80% occur in the rectosigmoid

  • Incidence is highest between ages 3 and 5 years

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Clinical Findings

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  • Painless passage of small amounts of bright red blood with mucus on a normal or constipated stool

  • Abdominal pain is rare

  • Low-lying polyps may prolapse during defecation

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Diagnosis

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  • Colonoscopy is diagnostic and therapeutic when polyps are suspected

  • After removal of the polyp by electrocautery, nothing further should be done if histologic findings confirm the diagnosis

  • Juvenile polyps may be present in the colon, causing anemia, diarrhea with mucus, and protein loss

  • Juvenile polyposis syndrome may be diagnosed if there are

    • More than five juvenile polyps in the colon

    • Multiple juvenile polyps elsewhere in the GI tract

    • Any number of juvenile polyps as well as a family history of juvenile polyposis syndrome

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Treatment

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  • Routine cancer surveillance

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