Definition

Nodular masses protruding from mucosal tissues.

Classifications

  • Non-neoplastic
    • Inflammatory
    • Hamartomatous
    • Hyperplastic
  • Neoplastic
    • Adenomas
    • Familial syndromes
    • Adenocarcinomas

Characteristics

  • Polyps can be solitary or come as part of a polyposis syndrome
    • Polyposis syndromes:
      • Juvenile polyposis
      • Peutz-Jeghers polyposis
      • Cowden syndrome
      • Familial adenomatous polyposis
    • Such inherited syndromes are usually involved with the appearance of up to hundreds of polyps (hence the name polyposis), an increased risk for malignant transformation along with an extraintestinal neoplastic manifestation
  • Polyps that have no stalk are said to be sessile
    • Seem as rounded dome-shaped outgrowths
  • Polyps that have stalk are known said to be pedunculated
    • The stalk consists of a submucosa core

Non-neoplastic polyps

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