UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                                  SCHEDULE l3D
                    Under the Securities Exchange Act of 1934
                               (Amendment No. 6)*


                              DELCATH SYSTEMS, INC.
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                                (Name of Issuer)

                     Common Stock, $0.01 par value per share
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                         (Title of Class of Securities)

                                    24661P104
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                                 (CUSIP Number)
                                                     with a copy to:
     Mr. Robert Ladd                                 Robert G. Minion, Esq.
     Laddcap Value Advisors LLC                      Lowenstein Sandler PC
     650 Fifth Avenue, Suite 600                     65 Livingston Avenue
     New York, New York 10019                        Roseland, New Jersey  07068
     (212) 259-2070                                  (973) 597-2424
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                  (Name, Address and Telephone Number of Person
                Authorized to Receive Notices and Communications)

                                 April 27, 2006
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             (Date of Event which Requires Filing of this Statement)


If the filing person has previously  filed a statement on Schedule l3G to report
the  acquisition  that is the  subject of this  Schedule 13D, and is filing this
schedule because of Sections 240.13d-1(e),  240.13d-1(f) or 240.13d-1(g),  check
the following box. [ ]

Note:  Schedules  filed in paper format shall include a signed original and five
copies of the schedule, including all exhibits.  See Section 240.13d-7 for other
parties to whom copies are to be sent.

*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
disclosures provided in a prior cover page.

The information required on 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).




Cusip No.      24661P104
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  1)   Names of Reporting Persons.  I.R.S. Identification Nos. of  above persons
       (entities only):

                                Robert Ladd
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  2)   Check the Appropriate Box if a Member of a Group (See Instructions):
             (a)
             (b)
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  3)   SEC Use Only

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  4)   Source of Funds (See Instructions):  WC
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  5)   Check if  Disclosure of  Legal Proceedings Is  Required Pursuant to Items
       2(d) or 2(e):         Not Applicable
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  6)   Citizenship or Place of Organization:    United States
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        Number of                     7) Sole Voting Power:           1,958,991*
                                         ---------------------------------------
        Shares Beneficially           8) Shared Voting Power:                 0*
                                         ---------------------------------------
        Owned by
        Each Reporting                9) Sole Dispositive Power:      1,958,991*
                                         ---------------------------------------
        Person With                  10) Shared Dispositive Power:            0*
                                         ---------------------------------------
--------------------------------------------------------------------------------
  11)  Aggregate Amount Beneficially Owned by Each Reporting Person:  1,958,991*
--------------------------------------------------------------------------------
  12)  Check if the Aggregate Amount in Row (11) Excludes Certain Shares  (See
       Instructions):      Not Applicable
--------------------------------------------------------------------------------
  13)  Percent of Class Represented by Amount in Row (11):      10.0%*
--------------------------------------------------------------------------------
  14)  Type of Reporting Person (See Instructions):      IN
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*  Laddcap Value Partners LP, a Delaware limited partnership ("Laddcap"), is the
record holder of 1,958,991 shares of the common stock, par value $0.01 per share
(the "Shares"), of Delcath Systems, Inc. (the "Company").  Robert Ladd possesses
the sole  power to vote and the sole  power to  direct  the  disposition  of all
securities  of the Company held by Laddcap.  Thus,  as of April 27, 2006 for the
purposes  of Reg. Section  240.13d-3,  Mr. Ladd is  deemed to  beneficially  own
1,958,991  Shares,  or 10.0% of the Shares deemed issued and  outstanding  as of
that date.





Item 4.   Purpose of Transaction.
          ----------------------


          Item 4 is hereby  amended  by  adding  the  following  after the sixth
paragraph thereof:

          On April 27, 2006,  Mr. Ladd, on behalf of Laddcap,  the record holder
of more than ten percent (10%) of the Company's  issued and outstanding  Shares,
sent a letter to each member of the Company's  Board of Directors  (the "Board")
and to the Company's  President and Chief Executive Officer,  Mr. M.S. Koly. The
letter demands that the Company's  President  immediately call a special meeting
of the  stockholders  pursuant  to Section 7 of Article  Sixth of the  Company's
Certificate of Incorporation and Article I, Section 2 of the Company's By-laws.

          The first  purpose  of this  special  meeting  would be to permit  the
Company's  stockholders  to vote on a precatory  stockholder  proposal  that the
poison  pill  should  be  eliminated.  Specifically,  the  letter  requests  the
Company's Board to (i) rescind  immediately  the Company's  poison pill and (ii)
take the immediate  steps necessary so that no future poison pill can be adopted
without stockholder approval.

          The second  purpose  of this  special  meeting  would be to permit the
Company's  stockholders  to vote on a proposal to add Article X to the Company's
By-laws, which shall read as follows:

                    The term of office of  an  officer of the  corporation
                    shall terminate immediately upon the affirmative vote,
                    at any  meeting of stockholders of the corporation, of
                    a majority of  the  shares of stock of the corporation
                    entitled to vote and represented at the meeting.

          The third  purpose  of this  special  meeting  would be to permit  the
Company's  stockholders  to vote on a  proposal  that the term of  office of the
current  President  and Chief  Executive  Officer,  Mr.  Koly,  shall  terminate
immediately.

          A copy of Mr.  Ladd's  April  27,  2006  letter  is  attached  to this
Schedule 13D, as amended as an exhibit pursuant to Item 7 hereof.


Item 5.   Interest in Securities of the Issuer.
          ------------------------------------

          Item 5 is hereby amended and restated in its entirety as follows:

          Based upon  information  set forth in the Notice of Annual  Meeting of
Stockholders  on Form 14A, as filed with the Securities and Exchange  Commission
on April 24, 2006,  there were  19,541,674  Shares issued and  outstanding as of
April 17, 2006. As of April 27, 2006, Laddcap is the holder of 1,958,991 Shares.
Robert  Ladd  possesses  the sole power to vote and the sole power to direct the
disposition of all securities of the Company held by Laddcap.  Thus, as of April
27, 2006,  for the  purposes of Reg.  Section  240.13d-3,  Mr. Ladd is deemed to
beneficially  own  1,958,991  Shares,  or 10.0% of the Shares  deemed issued and
outstanding as of that date.




          The following table details the  transactions in Shares by Mr. Ladd or
any other person or entity  controlled  by him or any person or entity for which
he possesses voting or investment  control over the securities  thereof (each of
which were purchases effected in an ordinary brokerage  transaction)  during the
sixty days on or prior to April 27, 2006:



       Date                Quantity of Shares          Price per Share
       ----                ------------------          ---------------
   March 14, 2006                20,000                 $        4.10
   March 15, 2006                48,500                 $        4.23
   March 15, 2006                 1,000                 $        4.35
   March 15, 2006                   200                 $        4.37
   March 15, 2006                 5,800                 $        4.38
   March 15, 2006                 2,000                 $        4.39
   March 15, 2006                12,000                 $        4.40
   March 15, 2006                15,000                 $        4.43
   March 16, 2006                10,000                 $        4.28
   March 17, 2006                 1,000                 $        4.38
   March 17, 2006                 1,500                 $        4.39
   March 17, 2006                 3,475                 $        4.40
   March 17, 2006                 4,500                 $        4.41
   March 17, 2006                 1,000                 $        4.42
   March 20, 2006                 5,950                 $        4.35
   March 20, 2006                   100                 $        4.39
   March 20, 2006                   475                 $        4.40
   March 20, 2006                 1,000                 $        4.41
   March 23, 2006                   500                 $        4.31
   March 23, 2006                   500                 $        4.32
   March 29, 2006                 1,300                 $        4.40
   March 29, 2006                   600                 $        4.41
   March 29, 2006                   600                 $        4.43
   March 29, 2006                   700                 $        4.44
   March 29, 2006                12,100                 $        4.53
   March 30, 2006                   700                 $        4.33
   March 30, 2006                   700                 $        4.35
   April 3, 2006                  2,000                 $        4.48
   April 3, 2006                    100                 $        4.51
   April 3, 2006                    100                 $        4.52
   April 3, 2006                  1,000                 $        4.54
   April 3, 2006                    100                 $        4.55
   April 3, 2006                 12,000                 $        4.56
   April 3, 2006                    100                 $        4.57
   April 3, 2006                  4,200                 $        4.58
   April 3, 2006                  1,400                 $        4.59
   April 3, 2006                 10,600                 $        4.60
   April 5, 2006                 35,000                 $        4.35
   April 6, 2006                  1,000                 $        3.91
   April 6, 2006                  2,000                 $        3.92
   April 6, 2006                  1,000                 $        3.97
   April 6, 2006                  1,000                 $        3.98





   April 17, 2006                22,000                 $        3.82
   April 21, 2006                 4,461                 $        4.25
   April 21, 2006                   930                 $        4.29
   April 21, 2006                   300                 $        4.30
   April 21, 2006                   200                 $        4.31
   April 21, 2006                 1,000                 $        4.45


          Except as set forth above,  there were no other transactions in Shares
or securities  convertible into,  exercisable for or exchangeable for Shares, by
Mr. Ladd or any other person or entity controlled by him or any person or entity
for which he possesses voting or investment  control over the securities thereof
during the sixty days on or prior to April 27, 2006.


Item 7.   Material to be Filed as Exhibits.
          --------------------------------

          7.1 Letter dated April 27, 2006 from Mr.  Ladd,  on behalf of Laddcap,
to each member of the Company's  Board and to the Company's  President and Chief
Executive Officer, Mr. Koly.



                                    Signature
                                    ---------

          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.



                                   April 28, 2006


                                   /s/ Robert Ladd
                                   ------------------------------------
                                   Robert Ladd, in his  capacity as the
                                   managing  member  of  Laddcap  Value
                                   Associates LLC, the general  partner
                                   of Laddcap Value Partners LP


           Attention: Intentional misstatements or omissions of fact
          constitute Federal criminal violations (See 18 U.S.C. 1001).





                                   Exhibit 7.1
                                   -----------


                     [Laddcap Value Partners LP Letterhead]


April 27, 2006

Mr. M.S. Koly, President and Director
Dr. Samuel Herschkowitz, Chairman of the Board
Mr. Mark A. Corigliano, Director
Mr. Daniel L. Isdaner, Director
Mr. Victor Nevins, Director
c/o Delcath Systems, Inc.
1100 Summer Street, Third Floor
Stamford, Connecticut 06905

Dear Messrs. Koly, Corigliano, Isdaner, Nevins, and Dr. Herschkowitz:

     Laddcap  Value  Partners  LP  ("Laddcap")   is  Delcath   Systems,   Inc.'s
("Delcath") largest stockholder, owning more than ten percent (10%) of Delcath's
outstanding  common  stock.  Delcath's  Board of  Directors  (the  "Board")  and
management  are  already  aware  that we are  profoundly  disappointed  with the
actions and inactions of Delcath's management and Board in continuing to chart a
course away from its primary obligation to enhance stockholder value. We believe
that Delcath's  management and Board have violated and continue to violate their
fiduciary  obligations  by, among other things,  implementing  and continuing to
maintain certain policies that simply serve to entrench management and the Board
and  place  management's  and the  Board's  interests  above  the  interests  of
Delcath's  stockholders.  We believe  that  Delcath's  low  enterprise  value is
reflective of management's and the Board's self-serving policies.

     Delcath's Board continues to maintain  policies that were never approved by
the current  stockholders.  These  policies  include,  but are not limited to, a
staggered  Board,  change of control  payments for  directors,  the right of the
Board  to  issue  shares  of  preferred  stock  without  stockholder   approval,
supermajority  voting  provisions to amend Delcath's  By-laws and Certificate of
Incorporation,  and a poison pill. If Delcath's  management and Board were truly
seeking to enhance shareholder value, there would be no need for these policies.

     In order for shareholder value to be immediately increased, we believe that
Delcath must rescind its poison pill.  To that end, this letter is a demand by a
more than ten percent (10%) stockholder, upon Mr. M.S. Koly, Delcath's President
and Chief  Executive  Officer,  to  immediately  call a special  meeting  of the
stockholders  pursuant to Section 7 of Article Sixth of Delcath's Certificate of
Incorporation and Article I, Section 2 of Delcath's By-laws.

     The  first  purpose  of  this  special  meeting  is  to  permit   Delcath's
stockholders  to vote on a precatory  stockholder  proposal that the poison pill
should be eliminated.  Specifically,  this proposal requests  Delcath's Board to
(i) rescind  immediately  Delcath's poison pill (i.e. the Rights Agreement dated
October 30, 2001,  implemented by the Board without stockholder  approval),  and





(ii) take the  immediate  steps  necessary so that no future  poison pill can be
adopted without stockholder approval.

     Laddcap urges Delcath's Board to promptly and properly restore value to its
stockholders  by permitting  Delcath's  stockholders to recommend at the special
stockholders  meeting  whether  or not they  wish the  poison  pill to remain in
effect, and by the Board ultimately  following the wishes of the stockholders to
whom the Board answers.

     The  second  purpose  of  this  special  meeting  is  to  permit  Delcath's
stockholders to vote on a proposal to add Article X to Delcath's By-laws,  which
shall read as follows:

               The term of  office of an  officer of the  corporation
               shall terminate immediately upon the affirmative vote,
               at any meeting of stockholders of the  corporation, of
               a majority of the shares  of stock of the  corporation
               entitled to vote and represented at the meeting.

     The  third  purpose  of  this  special  meeting  is  to  permit   Delcath's
stockholders  to vote on a  proposal  that the  term of  office  of the  current
President  and  Chief  Executive   Officer,   Mr.  M.S.  Koly,  shall  terminate
immediately.

     As Delcath's largest stockholder,  we care deeply about the performance and
future  prospects  of  Delcath.  We look  forward  to  management  and the Board
responding  appropriately  to  ensure  management  and the Board  satisfy  their
fiduciary duties by putting the interests of the stockholders above their own.

     Lastly,  we are aware that Delcath  maintains a policy that  correspondence
sent to a Delcath director is first reviewed by Mr. Koly who then decides if the
correspondence   shall  be  forwarded  to  the  Delcath  director  to  whom  the
correspondence  is  addressed.  We hereby  demand that this letter be  delivered
directly to the directors to whom it is addressed.

     We look forward to your prompt and stockholder friendly response.

LADDCAP VALUE PARTNERS LP


By:/s/ Robert Ladd
   ------------------------------
   Robert Ladd,  in  his capacity
   as  the  managing  member   of
   Laddcap  Value Associates LLC,
   the general partner of Laddcap
   Value Partners LP

   cc:       Robert G. Minion, Esq.
             Jeffrey M. Shapiro, Esq.
             Thomas S. Levato, Esq.
             Richard Bernstein, Esq.
             William J. Haubert, Esq.
             Lisa S. Schmidt, Esq.