ALISO VIEJO, Calif., June 28, 2007 (PRIME NEWSWIRE) -- SenoRx, Inc. (Nasdaq:SENO) today announced the first procedures using its new Multi-Lumen Radiation Balloon at two clinical sites. SenoRx received 510(k) clearance from the U.S. Food and Drug Administration to market its Multi-Lumen Radiation Balloon for brachytherapy on May 23, 2007. The procedures took place at two of the five initial sites where the balloon is being introduced.