ALISO VIEJO, Calif., May 5, 2008 (PRIME NEWSWIRE) -- SenoRx, Inc. (Nasdaq:SENO) today announced that it has received clearance to modify a warning on its Contura(tm) Multi-Lumen Radiation Balloon (MLB) Catheter product label from the U.S. Food and Drug Administration. The revised warning clarifies the use of the Contura MLB in cases in which there is less than 5 millimeters of skin spacing.