MOUNTAIN VIEW, Calif., March 31 /PRNewswire-FirstCall/ -- RITA Medical Systems, Inc. (Nasdaq: RITA) today announced that it filed its Form 10K for the year ended December 31, 2004 on March 31, 2005. The Company announced on March 16, 2005 that it had requested a two-week filing extension.

About RITA Medical Systems, Inc.

RITA Medical Systems develops manufactures and markets innovative products for cancer patients including radiofrequency ablation (RFA) systems for treating cancerous tumors as well as percutaneous vascular and spinal access systems. The Company's oncology product lines include implantable ports, some of which feature its proprietary VTX^® technology; tunneled central venous catheters; and stem-cell transplant catheters used primarily in cancer treatment protocols. The proprietary RITA system uses radiofrequency energy to heat tissue to a high enough temperature to ablate it or cause cell death.

The statements in this news release related to the timing of the Company's future filings with the Securities and Exchange Commission and the Company's future financial and operating performance are forward-looking statements involving risks and uncertainties that could cause actual results to differ materially from those in such forward-looking statements. Information regarding these risks is included in the Company's filings with the Securities and Exchange Commission.

Contact: Allen & Caron Inc.


Jill Bertotti (investors)
jill@allencaron.com
949-474-4300

SOURCE RITA Medical Systems, Inc.
03/31/2005


CONTACT: investors, Jill Bertotti of Allen & Caron Inc.,
+1-949-474-4300, jill@allencaron.com, for RITA Medical Systems, Inc.
(RITA)