IMPAC MEDICAL SYSTEMS COMPLETES ACQUISITION OF IMPATH’S POWERPATH® PATHOLOGY AND CANCER REGISTRY INFORMATION BUSINESSES

Transaction Expands IMPAC’s Presence in the Cancer Information Market

MOUNTAIN VIEW, CA – IMPAC Medical Systems, Inc. (NASDAQ:IMPC) and IMPATH Inc. (OTC:IMPHQ.PK) announced today that IMPAC has completed the acquisition of substantially all of the assets and certain liabilities of Tamtron Corporation and Medical Registry Services, Inc., IMPATH’s PowerPath® pathology information management and cancer registry information system businesses, pursuant to an asset purchase agreement entered into by the parties on November 24, 2003. The transaction is valued at approximately $22 million in cash and the assumption of certain liabilities.

IMPATH, Tamtron Corporation and Medical Registry Services, Inc. are operating as debtors-in-possession under the Bankruptcy Code, after having commenced a chapter 11 case on September 28, 2003 in the U.S. Bankruptcy Court for the Southern District of New York. Prior to the closing of this transaction, IMPATH entertained inquiries from a number of parties and conducted an auction under Section 363 of the United States Bankruptcy Code.

Asanté Partners LLC acted as financial advisor, and Weil, Gotshal & Manges LLP acted as legal advisor, to IMPATH with respect to the sale of Tamtron Corporation and Medical Registry Services. Orrick, Herrington & Sutcliffe LLP acted as legal advisor to IMPAC.

About IMPAC Medical Systems Inc.
IMPAC Medical Systems, Inc. is a leading provider of specialized IT solutions that streamline both clinical and business operations to help improve the process of delivering quality patient care. With open integration to multiple healthcare data and imaging systems, IMPAC offers a comprehensive IT solution that includes specialized electronic charting, full-featured practice management, clinical laboratory management, and outcomes reporting. Supporting over 1,600 installations worldwide, IMPAC delivers practical solutions that deliver better overall communication, process efficiency and quality patient care. For more information about IMPAC Medical Systems’ products and services, please call 650-623-8800 or visit www.impac.com.

About IMPATH Inc.

IMPATH is in the business of improving outcomes for cancer patients. The Company is a leading source of cancer information and analyses with a database of over 1 million patient profiles and outcomes data on more than 2.3 million individuals. IMPATH Physician Services uses sophisticated technologies to provide patient-specific cancer diagnostic and prognostic information to more than 8,700 pathologists and oncologists in over 2,100 hospitals and 630 oncology practices. Utilizing its comprehensive resources, IMPATH Predictive Oncology serves genomics, biotechnology and pharmaceutical companies involved in developing new therapeutics targeted to specific, biological characteristics of cancer. IMPATH Information Services provides software products, including PowerPath® and the IMPATH Cancer Registry™ for the collection and management of diagnostic data and outcomes information. The Company’s software products are currently being utilized in nearly 1,000 hospitals, academic centers and independent laboratories across the country.

Joseph K. Jachinowski
President and Chief Executive Officer
IMPAC Medical Systems
(650) 623-8800
ir@impac.com

Iris D. Daniels
Investor Relations
IMPATH Inc.
(212) 698-0300
idaniels@impath.com

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