Google Answers Logo
View Question
Q: Rates of Cervical Intraepithelial Neoplasia in the US ( Answered 5 out of 5 stars,   0 Comments )
Subject: Rates of Cervical Intraepithelial Neoplasia in the US
Category: Health > Women's Health
Asked by: jess05-ga
List Price: $15.00
Posted: 18 Apr 2006 15:31 PDT
Expires: 18 May 2006 15:31 PDT
Question ID: 720347
Can someone tell me how many women in the US are diagnosed with
cervical intraepithelial neoplasia each year? I need to have the
answer broken down into the number of women diagnosed with CIN1, the
number of women diagnosed with CIN2, and the number of women diagnosed
with CIN3.

Request for Question Clarification by bobbie7-ga on 20 Apr 2006 08:27 PDT
Subject: Re: Rates of Cervical Intraepithelial Neoplasia in the US
Answered By: bobbie7-ga on 20 Apr 2006 08:46 PDT
Rated:5 out of 5 stars
Hi Jess05!

"In the U.S. alone, 50 million Pap tests are performed each year, and
they discover close to 1.2 million cases of low-grade dysplasia
(cervical intraepithelial neoplasia [CIN]1), 300,000 cases of
high-grade dysplasia (CIN2/3) and 10,000 cases of cervical cancer.?

The Oncologist, Vol. 10, No. 7, 528-538, August 2005;

Cervical Intraepithelial Neoplasia (CIN)

?CIN, also called cervical dysplasia, is characterized by the presence
of abnormal cells that often precede cervical cancer. These abnormal
cells are usually detected in women through regular Pap smear
screening. More than 1.2 million women are diagnosed with low-grade
cervical dysplasia and another 200,000 to 300,000 are diagnosed with
high-grade cervical dysplasia each year in the U.S.?

Stressgen Biotechnologies Corporation

?Cervical intraepithelial neoplasia (CIN) refers to the pre-invasive
pathological intermediate of cervical cancer. The abnormalities
observed on a Pap smear or tissue biopsy of the cervix represent
alterations in the degree of differentiation of cervical epithelial
cells. In the United States alone, approximately 3.5 million women
have abnormal Pap smear tests each year. Approximately 1.2 million of
these women have a squamous intraepithelial lesion, of which 200,000
to 300,000 are high-grade.?

?The American College of Obstetricians and Gynecologists estimates
that 250,000 to 1 million new cases of cervical intraepithelial
neoplasia (CIN) are diagnosed in
the United States annually.? 

?Approximately 50 million Pap smears are taken yearly in the United
States, and 5 to 10% of these smears are reported as having low-grade
cytologic abnormalities, involving an estimated 2.5 million women.?

?An estimated 12,900 new cervical cancers and 4,400 cervical cancer
deaths will occur in the United States in 2001. An additional
1,250,000 women will be diagnosed yearly with changes referred to as
squamous intraepithelial lesions (SIL) or cervical intraepithelial
neoplasia (CIN). These changes form a continuum divided into low- or
high-grade SIL or CIN 1, 2, and 3 that reflects increasingly abnormal
changes of the affected epithelium. These lesions can persist,
regress, or progress to an invasive malignancy. High-grade SIL (CIN
2-3) is more likely to persist or progress and less often regresses
spontaneously, while low-grade SIL (CIN 1) often regresses without
treatment. ?

Association of Online Cancer Resources

Search terms used:
million patients  "cervical intraepithelial neoplasia"
"Cervical Intraepithelial Neoplasia" million 100000..500000"
million CIN   "cervical intraepithelial neoplasia"

I hope you find this information helpful!

Best regards,
jess05-ga rated this answer:5 out of 5 stars
Great information. Thank you!

There are no comments at this time.

Important Disclaimer: Answers and comments provided on Google Answers are general information, and are not intended to substitute for informed professional medical, psychiatric, psychological, tax, legal, investment, accounting, or other professional advice. Google does not endorse, and expressly disclaims liability for any product, manufacturer, distributor, service or service provider mentioned or any opinion expressed in answers or comments. Please read carefully the Google Answers Terms of Service.

If you feel that you have found inappropriate content, please let us know by emailing us at with the question ID listed above. Thank you.
Search Google Answers for
Google Answers  

Google Home - Answers FAQ - Terms of Service - Privacy Policy