SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549



                                    FORM 10-Q
            ---------------------------------------------------------

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



                         For Quarter Ended June 30, 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 of               (I.R.S. Employer 
          establishment of Trusts)                 Identification No.)



   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 TRUST
                                      INDEX
                                                                        Page
                                                                       Number
                                                                       ------
PART I         FINANCIAL INFORMATION

        Item   1. Financial Statements                                   3


        Item   2. Management's Discussion and Analysis of Financial
                            Condition and Results of Operations          3

PART II        OTHER INFORMATION

        Item   1. Legal Proceedings                                      4

        Item   2. Changes in Securities                                  4

        Item   3. Defaults Upon Senior Securities                        4

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

        Item   5. Other Information                                      4

        Item   6. Exhibits and Reports on Form 8-K                       4

SIGNATURE                                                                5

INDEX TO EXHIBITS                                                        6


                                    Page 2
<PAGE>

                       CS FBC MORTGAGE SECURITIES TRUST 22
                               AND SIMILAR TRUSTS

PART I      FINANCIAL INFORMATION


Item 1.     Financial Statements

            Financial statements for the period ended June 30, 1998 have not
            been prepared in as much as the reporting entities have not
            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.

            The Trusts are formed under the laws of the state of Delaware by a
            trust agreement between Credit Suisse First Boston Mortgage
            Securities Corp., as depositor, and Wilmington Trust Company, as
            Owner Trustee (the "Owner Trustee"). Subsequent to the issuance of
            the Bonds of Trust 22 and Similar Trusts, the Depositor may sell all
            or a part of its ownership interest in the related trusts to other
            investors.

            The powers and activities of the aforementioned trusts are limited
            to the issuance of Bonds, the acquisition of mortgage-backed
            certificates to collateralize the Bonds, the administration of the
            Bonds and other related activities. As of the date of this report,
            the trusts have not issued any bonds.


Item 2.     Management's  Discussion  and  Analysis  of  Financial  Condition
            and Results of Operations

            Not applicable.

                                     Page 3

<PAGE>

                       CS FBC MORTGAGE SECURITIES TRUST 22
                               AND SIMILAR TRUSTS


PART II     OTHER INFORMATION

Item 1.     Legal Proceedings

            None.

Item 2.     Changes in Securities

            Not applicable.

Item 3.     Defaults Upon Senior Securities

            Not applicable.

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

            Not applicable.

Item 5.     Other Information

            None

Item 6.     Exhibits and Reports on Form 8-K

            (a)   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.

                                     Page 4
<PAGE>

                                    SIGNATURE


Pursuant to the requirements 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: /s/ THOMAS M. ZINGALLI
                                             -----------------------------------
                                               Thomas M. Zingalli
                                            Controller and Principal
                                                Accounting Officer
                                          (Duly Authorized Officer and
                                          Principal Accounting Officer)


Dated:  August 10, 1998

                                     Page 5
<PAGE>

                                INDEX TO EXHIBITS
<TABLE>
<CAPTION>

Exhibit
Number         Description of Exhibit                                          Page
------         ----------------------                                          ----
<S>            <C>                                                             <C>
3(a)           Form of Trust Agremment (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 on 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.

                                     Page 6