UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                  SCHEDULE 13G
                    Under the Securities Exchange Act of 1934

                                Amendment No.: 1

                    Name of Issuer: DUSA PHARMACEUTICALS INC.

             Title of Class of Securities: COMMON STOCK NO PAR VALUE

                             CUSIP Number: 266898105



 Check the appropriate box to designate the rule pursuant to which this Schedule
                                   is filed:
                                [x] Rule 13d-1(b)
                                [ ] Rule 13d-1(c)
                                [ ] Rule 13d-1(d)

*The  remainder of this cover page shall be filled out for a reporting  person's
initial filing on this form with respect to the subject class of securities, and
for any  subsequent  amendment  containing  information  which  would  alter the
disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the  Securities  Exchange  Act of
1934 ("Act") or otherwise  subject to the liabilities of that section of the Act
but  shall be  subject  to all other  provisions  of the Act  (however,  see the
Notes).

1.     Name of Reporting Person and S.S. or I.R.S. Identification
        No of Above Person:    Pequot Capital Management, Inc.
        Tax ID:                          06-1524885

2.     Check the Appropriate Box if a Member of a Group
        a.
        b.

3.     SEC Use Only

4.     Citizenship or Place of Organization:
        Connecticut

Number of Shares Beneficially Owned by Each Reporting Person With:

       5.     Sole Voting Power:     1,573,500

       6.     Shared Voting Power:     0

       7.     Sole Dispositive Power:  1,573,500

       8.     Shared Dispositive Power:     0

9.     Aggregate Amount Beneficially Owned by Each Reporting Person:
       1,573,500

10.    Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares:

11.    Percent of Class Represented by Amount in Row (9):    11.35%

12.    Type of Reporting Person:     IA, CO


Item 1(a)       Name of Issuer:  DUSA PHARMACEUTICALS INC.

     1(b)       Address of Issuer's Principal Executive Offices:
                25 Upton Drive, Wilmington, Massachusetts 01887

Item 2(a)-(c)   Name, Principal Business Address, and Citizenship of Persons
                Filing:
                Pequot Capital Management, Inc., 500 Nyala Farm Road, Westport,
                CT, 06880, which is a Connecticut corporation.

     (d)        Title of Class of Securities: COMMON STOCK NO PAR VALUE

     (e)        CUSIP Number: 266898105

Item 3.  This statement is filed pursuant to Rule 13d-1(b)(1)(ii)(E).
         Pequot Capital Management, Inc. is an investment adviser registered
         under Section 203 of the Investment Advisers Act of 1940.

Item 4.  Ownership.
         Ownership as of December 31, 2001 is incorporated by reference to items
         (5) - (9) and (11) of the cover page of the reporting person.

Item 5.  Ownership of Five Percent or Less of a Class.
         Not Applicable

Item 6.  Ownership of More than Five Percent on Behalf of Another Person.
          The reporting person is an investment adviser registered under Section
          203 of  the  Investment  Advisers  Act  of  1940  and,  as  such,  has
          beneficial  ownership  of the  shares  which are the  subject  of this
          filing  through  the  investment   discretion  the  reporting   person
          exercises  over its clients'  accounts.  Although  such clients do not
          have  beneficial  ownership  of such shares for purposes of Section 13
          and Section 16 of the Securities  Exchange Act of 1934, two clients of
          the  reporting  person,   Pequot  Healthcare  Fund,  L.P.  and  Pequot
          Healthcare  Offshore Fund,  Inc. each own more than 5% of the issuer's
          outstanding securities.

Item 7.  Identification and Classification of the Subsidiary Which Acquired the
         Security Being Reported by the Parent Holding Company.
         Not Applicable

Item 8.  Identification and Classification of Members of the Group.
         Not Applicable

Item 9.  Notice of Dissolution of the Group.
         Not Applicable

Item 10.

By signing  below,  I certify that, to the best of my knowledge and belief,  the
Securities  referred to above were  acquired in the ordinary  course of business
and were not  acquired for the purpose and do not have the effect of changing or
influencing  the control of the issuer of such  securities and were not acquired
in connection with or as a participant in any transaction having such purpose or
effect.

After reasonable inquiry and to the best of my knowledge and belief, I certify
that the information set forth in this statement is true, complete and correct.

Date: February 14, 2002

By: /s/  Kevin E. O'Brien
Title: Chief Operating Officer