Bowel Polyps

• A lesion that projects into the lumen (in this case of the bowel)

Symptoms and Signs

• Passage of blood or mucus PR
• Rarely
  • obstruction
  • intussusception

Investigations

• Sigmoidoscopy & biopsy
• Barium enema
• Colonoscopy

Types

Hamartomas

• Juvenile Polyps
  • Large or small bowel
  • Cause bleeding or obstruction
  • May auto-amputate in adolescence
• Peutz-Jeghers
  • Diffuse GI polyposis
  • Mucocutaneous pigmentation of lips and gums
  • No malignant potential

Neoplastic polyps

• Adenomatous polyps & villous adenomas
  • Malignant potential, esp. Villous adenoma
• Familial Polyposis Coli
  • Gardners syndrome

Inflammatory Pseudopolyps

• May arise in Ulcerative Colitis
• Lymphoid hyperplasia may also be apparent as a polyp

Tubular Adenoma

• neoplastic polyps
• small (<10mm)
• resemble raspberry
• most pedunculated, some sessile

Villous Adenoma

• neoplastic polyp
• often >20mm
• sessile
• elongated villi

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