UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(D) OF THE

SECURITIES EXCHANGE ACT OF 1934

Date of Report (Date of earliest event reported): March 1, 2007

Cytyc Corporation

(Exact name of registrant as specified in its charter)

Delaware	0-27558	02-0407755
(State or other jurisdiction of incorporation)	(Commission File Number)	(IRS Employer Identification No.)

250 Campus Drive, Marlborough, MA	01752
(Address of principal executive offices)	(Zip Code)

Registrant’s telephone number, including area code: (508) 263-2900

N/A

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

¨ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

¨ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

¨ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

¨ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Item 7.01. Regulation FD Disclosure.

In connection with the filing today of its Annual Report on Form 10-K, Cytyc Corporation (the “Company”) reconfirmed that, for the first quarter of 2007, it continues to expect revenue to be in the range of $163 million to $166 million and diluted earnings per share to be in the range of $0.30 to $0.32. For the full year 2007, Cytyc continues to expect revenue to be in the range of $690 million to $710 million and diluted earnings per share to be in the range of $1.30 to $1.35. Cytyc also continues to expect that it will complete its previously announced acquisition of Adiana, Inc. before the end of March 2007, and that it will complete its tender offer to acquire Adeza Biomedical Corporation before the end of March 2007.

The information in Item 7.01 of this Form 8-K shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934 (the “Exchange Act”) or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933 or the Exchange Act, except as expressly set forth by specific reference in such filing.

SIGNATURES

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 hereunto duly authorized.

	CYTYC CORPORATION
By:	/s/ Timothy M. Adams
	Timothy M. Adams
	Senior Vice President, Chief Financial Officer and Treasurer
Date: March 1, 2007