Skip to content

Information and Resources

Font Size
A
A
A

Why a Mammogram May Miss a Tumor


WebMD Feature

April 3, 2000 (Chantilly, Va.) -- Medical experts say there are several reasons why a mammogram may fail to detect a cancerous tumor:

  • The technology. Mammograms involve squeezing a woman's breast between two plates of glass -- a technique that is awkward at best. Old or badly maintained equipment and poorly trained technicians can increase the odds of an inaccurate film.
  • The quality of a woman's breast. Mammograms aren't good at detecting cancers in breast tissue that is dense or fibrous, as is common among female athletes and premenopausal women.
  • The pace of medicine. With radiologists under pressure to read more films more quickly, the risk of making mistakes has grown.

Studies on mammogram accuracy show that screenings miss anywhere from 5% to 17% of abnormalities. Yet many patients continue to believe that a "clear" mammogram is the same as a clean bill of health.

Recommended Related to Breast Cancer

Girl's Guide to Preventing, Avoiding, Treating, and Even Beating Cancer

By Ashley Ross and Sophie Banay Moura Cancer: The word alone can paralyze us. Instead of protecting ourselves, we resort to magical thinking—it won't happen to me. That's a mistake. Rates of the top five cancers in women 20 to 39—in order, they are breast, thyroid, melanoma, cervical, and colorectal—are rising. The good news: There's a lot you can do to prevent them. We talked to the country's top doctors and mined the latest research for Marie Claire's first-ever cancer crash course. Here, how...

Read the Girl's Guide to Preventing, Avoiding, Treating, and Even Beating Cancer article > >

"Even though there is no perfect test, and no perfect doctor, and no perfect reading, patients expect perfect results,'' says Phan Huynh, M.D., a breast imaging specialist at the University of Texas Health Science Center in Houston.

Michael D. Towle writes regularly for WebMD on health and legal issues.

Hot Topics

WebMD Video: Now Playing

Click here to wach video: Dirty Truth About Hand Washing

Which sex is the worst about washing up? Why is it so important? We’ve got the dirty truth on how and when to wash your hands.

Click here to watch video: Dirty Truth About Hand Washing

Popular Slideshows & Tools on WebMD

sore foot
3 warning signs.
acupuncture needle on shoulder
10 tips to look and feel good.
mature woman holding fan in face
Symptoms and treatments.
disciplining a boy
Types, symptoms, causes.
psoriasis
What it looks like.
checking blood sugar
Symptoms and treatment.
man behind computer screen
10 possible causes.
Woman with itchy watery eyes
Common triggers.
man screaming
Making sense of symptoms.
human liver
What puts you at risk?
caregiver with parent
10 tips for daily life.
two male hands
Understanding RA.

Pollen counts, treatment tips, and more.

It's nothing to sneeze at.

Loading ...

Sending your email...

This feature is temporarily unavailable. Please try again later.

Thanks!

Now check your email account on your mobile phone to download your new app.

Women's Health Newsletter

Find out what women really need.