SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549



                                    FORM 10-K

         --------------------------------------------------------------

                  ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d)
                     OF THE SECURITIES EXCHANGE ACT OF 1934


                     For Fiscal Year Ended December 31, 1998
                         Commission File Number 33-11924

            CS FBC MORTGAGE SECURITIES TRUST 22 AND SIMILAR TRUSTS
  OF WHICH CREDIT SUISSE FIRST BOSTON MORTGAGE SECURITIES CORP. IS DEPOSITOR
  --------------------------------------------------------------------------
     (Exact name of registrant as specified in its governing instruments)



          Delaware                                     Not Applicable
 ----------------------------               ------------------------------------
 (State or other jurisdiction               (I.R.S. Employer Identification No.)
  of establishment of Trusts)

  c/o Wilmington Trust Company
      Rodney Square North
      Wilmington, Delaware                                  19890
   --------------------------                            ----------
   (Address of Owner Trustee)                            (Zip Code)

Owner Trustee's telephone number, including area code    302-651-1000
                                                         ------------

Securities registered pursuant to Section 12(b) of the Act: None.

Securities registered pursuant to Section 12(g) of the Act: None.

Indicate by check mark whether the registrant (1) has filed all reports required
to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during
the preceding 12 months (or for such shorter period that the registrant was
required to file such reports), and (2) has been subject to such filing
requirements for the past 90 days.
Yes X No ___





<PAGE>



                       CS FBC MORTGAGE SECURITIES TRUST 22
                               AND SIMILAR TRUSTS
                                      INDEX

<TABLE>
<CAPTION>
                                                                           Page
                                                                          Number
                                                                          ------
<S>                                                                         <C>
ART I

      Item  1.    Business                                                   3
      Item  2.    Properties                                                 3
      Item  3.    Legal Proceedings                                          3
      Item  4.    Submission of Matters to a Vote of Security Holders        3

PART II

      Item  5.    Market for the Registrant's Common Equity and Related
                     Stockholder Matters                                     4
      Item  6.    Selected Financial Data                                    4
      Item  7.    Management's Discussion and Analysis of Financial
                     Condition and Results of Operations                     4
      Item  7a.   Quantitative and Qualitative Disclosures
                     About Market Risks                                      4
      Item  8.    Financial Statements and Supplementary Data                4
      Item  9.    Changes in and Disagreements with Accountants on
                     Accounting and Financial Disclosure                     4

PART III

      Item  10.   Directors and Executive Officers of the Registrant         4
      Item  11.   Executive Compensation                                     4
      Item  12.   Security Ownership of Certain Beneficial Owners and
                     Management                                              4
      Item  13.   Certain Relationships and Related Transactions             5

PART IV

      Item  14.   Exhibits, Financial Statement Schedules, and Reports
                     on Form 8-K                                             5

SIGNATURE                                                                    6
INDEX TO EXHIBITS                                                            7
</TABLE>





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<PAGE>



                       CS FBC MORTGAGE SECURITIES TRUST 22
                               AND SIMILAR TRUSTS


PART 1

Item 1.  Business

         CS FBC Mortgage Securities Trust 22 and Similar Trusts (the "Trusts")
         are trusts established under the laws of the State of Delaware by a
         Trust Agreement between Credit Suisse First Boston Mortgage Securities
         Corp., as depositor (the "Depositor") and Wilmington Trust Company, as
         Owner Trustee (the "Owner Trustee"). The Depositor, a Delaware
         corporation is an indirect wholly owned subsidiary of Credit Suisse
         First Boston, Inc. and is the settlor and sole beneficiary of the
         issuer prior to the offering. Subsequent to the issuance of the Bonds,
         the Depositor may sell all or a part of its ownership interest in the
         related trusts to other investors. Wilmington Trust Company will act as
         Owner Trustee for, and at the direction of, the beneficial holders of
         the Trusts.

         The Trust Agreement provides that the Trusts have no power to engage in
         any activities other than (i) the issuance and sale of the Bonds
         pursuant to the Indenture and the acquiring, owning, holding and
         pledging of Mortgage Certificates in connection therewith, provided
         that the bonds have been rated "AAA" by Standard & Poor's Corporation;
         (ii) activities which are necessary, suitable or convenient to
         accomplish the foregoing or are incidental thereto or connected
         therewith; and (iii) such other activities as may be required in
         connection with conservation of trust assets and distributions to
         holders of the beneficial interest in the Trusts. The provision of the
         Trust Agreements so limiting the power of the Trusts is not subject to
         amendment without the prior written consent of Bondholders holding in
         the aggregate no less than a majority of the outstanding principal
         amount of the Bonds.

         As of the date of this report, the trusts have not issued any bonds.

Item 2.  Properties

         The Trusts neither own nor lease any physical properties.

Item 3.  Legal Proceedings

         The Trusts are not a party to any material actual or pending legal
         proceedings.

Item 4.  Submission of Matters to a Vote of Security Holders

         None.







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<PAGE>



PART II.

Item 5.  Market for the Registrant's Common Equity and Related Stockholder 
         Matters

         Not applicable.

Item 6.  Selected Financial Data

         Selected financial data is omitted, because financial statements for
         the year ended December 31, 1998 have not been prepared inasmuch as
         the reporting entities have not yet commenced operations as of that
         date.

Item 7.  Management's  Discussion  and  Analysis of Financial  Condition  and 
         Results of Operations

         Not applicable.

Item 7a. Quantitative and Qualitative Disclosures About Market Risks

         Not applicable.

Item 8.  Financial Statements and Supplementary Data

         Financial statements for the year ended December 31, 1998 have not
         been prepared inasmuch as the reporting entities have not yet
         commenced operations as of that date.

         As of the date of this report, the trusts have been formed and have
         not issued any bonds. It is anticipated that the trusts will issue
         series of Bonds under Registration Statement No. 33-11924 which was
         filed on Form S-11 by Credit Suisse First Boston Mortgage Securities
         Corp. on February 12, 1987 with the Securities and Exchange
         Commission providing for the issuance of up to $2,000,000,000
         aggregate principal amount, of Collateralized Mortgage Obligations.

Item 9.  Changes in and  Disagreements  with  Accountants  on Accounting  and 
         Financial Disclosure

         None.


PART III.

Item 10. Directors and Executive Officers of the Registrant

Name                  Age                  Title                    Date Elected
----                  ---                  -----                    ------------
Thomas M. Zingalli     40    Controller and Principal Accounting      08/05/94
                             Officer

Item 11. Executive Compensation

         Not applicable.

Item 12. Security Ownership of Certain Beneficial Owners and Management

         Not applicable.




                                     Page 4


<PAGE>



Item 13. Certain Relationships and Related Transactions

         Not applicable.

PART IV.

Item  14. Exhibits, Financial Statement Schedules, and Reports on Form 8-K

      (a)   The following documents are filed as part of this report.

            (1)   Financial Statements

                  Financial Statements for the year ended December 31, 1998 have
                  not been prepared inasmuch as the reporting entities had not
                  commenced operations as of that date.

            (2)   Financial Statement Schedules

                  Financial Statement Schedules are omitted because they are not
                  required or applicable.

            (3)   Exhibits

                  Form of Trust Agreement [for non-REMIC Bonds] (incorporated by
                  reference to Exhibit 3(a) of Registration Statement on Form
                  S-11 (No. 33-11924) dated February 12, 1987).

                  Form of Trust Agreement [for REMIC Bonds] (incorporated by
                  reference to Exhibit 3(b) of Registration Statement on Form
                  S-11 (No. 33-11924) dated February 12, 1987).

                  Form of Indenture (incorporated by reference to Exhibit 4 of
                  Registration Statement on Form S-11 (No. 33-11924) dated
                  February 12, 1987).

                  Form of Bond Administration Agreement [for non-REMIC Bonds]
                  (incorporated by reference to Exhibit 10(a) of Registration
                  Statement on Form S-11 (No. 33-11924) dated February 12,
                  1987).

                  Form of Bond Administration Agreement [for REMIC Bonds]
                  (incorporated by reference to Exhibit 10(b) of Registration
                  Statement on Form S-11 (No. 33- 11924) dated February 12,
                  1987).

      (b)   Reports on Form 8-K

            None.

      (c)   Exhibits filed as part of this report are included in Item 14(a)(3)
            above.





                                     Page 5


<PAGE>



                                    SIGNATURE

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange
Act of 1934, the registrant has duly caused this report to be signed on its
behalf by the undersigned thereunto duly authorized.


                                          Credit Suisse First Boston Mortgage
                                          Securities Corp., as
                                          Depositor, on behalf of
                                          CS FBC Mortgage Securities
                                          Trust 22 and Similar Trusts


                                          By:   THOMAS M. ZINGALLI
                                              ------------------------------
                                                Thomas M. Zingalli
                                                Controller and Principal
                                                  Accounting Officer
                                                (Duly Authorized Officer and
                                                Principal Accounting Officer)



Dated:  March 26, 1999








                                     Page 6
<PAGE>



                                INDEX TO EXHIBITS
                                -----------------

<TABLE>
<CAPTION>
Exhibit
Number      Description of Exhibit                                         Page
------      ----------------------                                         ----
<S>         <C>                                                              <C>
3(a)        Form of Trust Agreement [for non-REMIC Bonds]                    *

3(b)        Form of Trust Agreement [for REMIC Bonds]                        *

4           Form of Indenture                                                *

10(a)       Form of Bond Administration Agreement [for non-REMIC Bonds]      *

10(b)       Form of Bond Administration Agreement [for REMIC Bonds]          *
</TABLE>



*     Incorporated by reference to the same Exhibits in Registration Statement
      on Form S-11 (No. 33-11924) filed with the Securities and Exchange
      Commission on February 12, 1987.









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