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Multiple Rectal Ulcers (83 of 110)
Case description
The polypoid manifestations of the idiopathic inflammatory
bowel diseases (ulcerative colitis and Crohn disease) are
often confusing. Inflammatory polyps project above the
level of the surrounding mucosa. Pseudopolyposis
(in ulcerative colitis) or a cobblestone appearance
(in Crohn disease) results when extensive ulceration
develops and only scattered islands of relatively normal
mucosa remain; thus, the ulcerated areas may be falsely
perceived as the baseline and the islands as polyps.
Postinflammatory (filiform) polyps--fingerlike projections
of submucosa covered by mucosa on all sides--reflect
healing of undermined mucosal and submucosal remnants
and ulcers and are almost always multiple. Patients with
ulcerative colitis or Crohn disease are at increased risk for
developing adenocarcinoma.
bowel diseases (ulcerative colitis and Crohn disease) are
often confusing. Inflammatory polyps project above the
level of the surrounding mucosa. Pseudopolyposis
(in ulcerative colitis) or a cobblestone appearance
(in Crohn disease) results when extensive ulceration
develops and only scattered islands of relatively normal
mucosa remain; thus, the ulcerated areas may be falsely
perceived as the baseline and the islands as polyps.
Postinflammatory (filiform) polyps--fingerlike projections
of submucosa covered by mucosa on all sides--reflect
healing of undermined mucosal and submucosal remnants
and ulcers and are almost always multiple. Patients with
ulcerative colitis or Crohn disease are at increased risk for
developing adenocarcinoma.
