EX-23 4 d60561_ex-23.txt CONSENT OF INDEPENDENT RPA Exhibit 23 CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We consent to the incorporation by reference in Registration Statement No. 333-100878 of E-Z-EM, Inc. on Form S-8 of our report dated July 27, 2004, except for Note O, as to which the date is August 17, 2004, appearing in the Annual Report on Form 10-K of E-Z-EM, Inc. and Subsidiaries for the fifty-two weeks ended May 29, 2004. /s/ GRANT THORNTON LLP Melville, New York August 17, 2004 -110-