ALISO VIEJO, Calif., April 29, 2008 (PRIME NEWSWIRE) -- SenoRx, Inc. (NasdaqGM:SENO - News) today announced that a request for a preliminary injunction, filed by Hologic and its wholly-owned subsidiaries, Cytyc Corporation and Cytyc LP in their pending patent infringement suit against SenoRx, Inc., was denied by the United States District Court for the Northern District of California. The Court ordered the parties to schedule a trial within 60-90 days.

About SenoRx

SenoRx (NasdaqGM:SENO - News) develops, manufactures and sells minimally invasive medical devices used by breast care specialists for the diagnosis and treatment of breast cancer, including its EnCor(r) vacuum-assisted breast biopsy system and Contura MLB catheter for delivering radiation to the tissue surrounding the lumpectomy cavity following surgery for breast cancer. SenoRx's field sales organization serves over 1,000 breast diagnostic and treatment centers in the United States and Canada. In addition, SenoRx has recently launched several of its products through distributors in more than 15 countries outside the U.S. and Canada. The company's line of breast care products includes biopsy disposables, biopsy capital equipment, diagnostic adjunct products and therapeutic disposables. SenoRx is developing additional minimally invasive products for the diagnosis and treatment of breast cancer. For more information, visit the company's website at http://www.senorx.com.

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          SenoRx, Inc.
          Lila Churney, Director of Investor Relations
          949.362.4800 ext.132