Dynacq Healthcare (DYII) 10-K 2003 FY Annual report

Exhibit 32.1

Certification Pursuant to

18 U.S.C. Section 1350,

As Adopted Pursuant to

Section 906 of the Sarbanes-Oxley Act of 2002

In connection with the Annual Report of Dynacq Healthcare, Inc. (the “Company”) on Form 10-K for the period ending August 31, 2003 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Chiu M. Chan, President and Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. §1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

(1) The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and result of operations of the Company.

Dated: July 30, 2004

/s/    CHIU M. CHAN        

Chiu M. Chan

President and Chief Executive Officer

Dynacq Healthcare, Inc.