Juvenile Polyps

  • Etiology: Juvenile polyposis is autosomal dominant
  • Imaging: Polypoid filling defect which often is single
  • DDX:
  • Complications: Some risk of malignant transformation
  • Treatment: Polypectomy
  • Clinical: Juvenile polyps most common gastrointestinal neoplasm in pediatric population

Radiology Cases of Juvenile Polyps

Small bowel follow through of juvenile polyp
Spot image of the jejunum from a small bowel follow through shows a polypoid filling defect in the center of the bowel lumen whose stalk attaches to the bowel mucosa.

Radiology Cases of Juvenile Polyps Serving as Lead Point For Ileocolic Intussusception

CT and US of recurrent ileocolic intussusception caused by juvenile polyps
Axial CT with contrast of the abdomen (above) at initial presentation shows a large round soft tissue mass in the region of the ascending colon that has alternating circles of soft tissue density and fat density which give it a target sign appearance. Transverse US of the abdomen obtained two weeks later (below) shows recurrence of a nearly identical appearing soft tissue mass in the region of the ascending colon that has alternating circles of decreased and increased echogenicity giving it a target sign appearance.

Endoscopy Cases of Juvenile Polyps

Colonoscopy image of juvenile polyps
Colonoscopy images shows a polyp on a stalk in the ascending colon (above) and a sessile polyp in the rectum (below).

Surgery Cases of Juvenile Polyps

Surgical image of juvenile polyps
Surgical image after cecectomy and opening of the surgical specimen shows multiple polyps arising from the mucosa of the cecum, including a large one being held between the surgical forceps.