DEPARTMENTS: CASE REPORTUrinary Bladder Matrix for the Treatment of Recalcitrant Nonhealing Radiation WoundsRommer, Elizabeth A. BS; Peric, Mirna BA; Wong, Alex MD, FACSAuthor Information Elizabeth A. Rommer, BS, is research coordinator; Mirna Peric, BA, is a research assistant; and Alex Wong, MD, FACS, is assistant professor of surgery, all in the Division of Plastic and Reconstructive Surgery, Keck School of Medicine of the University of Southern California, Los Angeles, California. The authors have disclosed that they have no financial relationships related to this article. Submitted February 20, 2013; accepted in revised form August 1, 2013. Advances in Skin & Wound Care: October 2013 - Volume 26 - Issue 10 - p 450-455 doi: 10.1097/01.ASW.0000434617.57451.e6 Buy Metrics Abstract Chronic wounds in previously radiated tissue are challenging to treat. In this article, the authors describe 3 such wounds that failed to heal despite multiple treatments with traditional wound healing methods. Treatment with porcine urinary bladder matrix, an extracellular matrix material, was initiated to facilitate epithelialization and promote wound healing. MatriStem powder (ACell, Inc, Columbia, Maryland), MatriStem (ACell, Inc) sheet, and DuoDerm (ConvaTec, Skillman, New Jersey) were applied biweekly and resulted in complete wound closure within 3 weeks of initial application for all 3 cases. All wounds remained closed 9 months following treatment, suggesting a role for urinary bladder matrix in the management of chronic wounds in the setting of irradiated tissue. © 2013 Wolters Kluwer Health | Lippincott Williams & Wilkins. All world rights reserved.