Marjolin's ulcer in patients with spinal cord injury.

Background: The term "Marjolin's ulcer" is now synonymous with malignant transformation, usually ectodermal and rarely mesenchymal, of chronic ulcers, sinus tracts, and burn scars.

Design: Literature search and personal experience with 5 patients during a 30-year period in a spinal cord injury center.

Findings: Five cases of Marjolin's ulcer diagnosed among approximately 10,000 patients indicate the rarity of the metaplasia.