Right Ventricular Outflow Tract Pseudo Aneurysm After Reconstruction With Small Intestinal Submucosal Cormatrix Patch A Word Of Caution.

Tetralogy of Fallot is very prevalent with correction techniques well standardized. Whenever infundibular incisions are needed, patch reconstruction seems mandatory. Recently, the small intestinal submucosal (CorMatrix, MAC's Medical Group,) patch was introduced, with optimal results in pre-clinical studies. However, clinical results do not match its pre-clinical promises, particularly when used in right ventricular outflow tract and pulmonary artery reconstructions. We describe a case of Tetralogy of Fallot for which small intestinal submucosal (CorMatrix) patch was used as a trans-annular patch, with development of a massive pseudo-aneurysm.