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Emma17's avatar
Emma17
Member
6 years ago

BreastScreen VIC trial results - 3D mammos have significantly higher cancer detection rate than 2D

Published online today in The Medical Journal of Australia:


While the study discussion reverts to the usual issues about false positives, overscreening, etc. that litter any discussion about technology beyond 2D mammograms in the Australian screening program (BreastScreen), it is indisputable that 3D mammograms (tomosynthesis) have a significantly higher cancer detection rate than 2D mammograms.

This is critically important for all women and especially those with dense breast tissue who are within the BreastScreen catchment age range of 40-74.  Women age 40 and older are eligible for free mammograms through BreastScreen. 

This BCNA forum is replete with stories of women across the BreastScreen age spectrum (including many aged 50+) who were unaware they have dense breast tissue, and which BreastScreen (except in WA) purposely does not advise about despite it being evident to the reading radiologists.  Dense breast tissue obscured their cancer and caused a delayed diagnosis and sometimes more intensive treatment.

@arpie You are a vocal and articulate advocate about this issue and I wanted to bring this article to your attention ASAP.

24 Replies

  • Quote: ....  Is 3D Mammography better than 2D Mammography in screening for breast cancer?

    Currently there is no evidence that 3D Mammography is superior in reducing death from breast cancer compared to standard 2D Mammography.

    Does BreastScreen WA use 3D Mammography for screening?

    BreastScreen WA uses 2D Mammography in screening because there is no evidence that 3D Mammography is superior in reducing mortality from breast cancer.

    BreastScreen Australia, is actively reviewing the published medical evidence on 3D Mammography, and future decisions on breast cancer screening technology will be based on the best robust medical evidence as that evidence emerges."...... Unquote


    oh dear, @"Annie C" - that is a tad disconcerting isn't it!  They obviously haven't read the latest report even tho they say they do (above, many thanks to @Emma17 - we have ears & eyes everywhere!!   ;)  ) as published in the Medical Journal of Australia!!   

    Hopefully they will review it soon & change their mindset.

    If not, perhaps an email to them, enlightening them to the fact, may be in order?

    But then, will they even 'believe it'?  The info that @JJ70 sent was also from reputable researchers & medical boffins - and BSNSW didn't believe it or refer it back to BSAustralia!!

    And the really sad thing is that, after 5 years, if we are sent BACK to Breastscreen for 2 yearly scans ...... they'll probably still only have the 2D machines operating - so would have no confidence in the procedure at all!   :(   

    I know I'll be opting to stay with the ones I trust!


  • @Emma17
    @arpie

    The following I "lifted" from BreastScreenWA online information on breast screening. 


    12. Tomosynthesis / 3D Mammography

    "What is 3D Mammography?

    Three-dimensional mammography (also called digital breast tomosynthesis) uses special computer software to create a 3D image of the breast using x-rays (mammograms) taken at different angles. A standard mammogram creates a two-dimensional (2D) image of the breast.

    Is 3D Mammography better than 2D Mammography in screening for breast cancer?

    Currently there is no evidence that 3D Mammography is superior in reducing death from breast cancer compared to standard 2D Mammography.

    Does BreastScreen WA use 3D Mammography for screening?

    BreastScreen WA uses 2D Mammography in screening because there is no evidence that 3D Mammography is superior in reducing mortality from breast cancer.

    BreastScreen Australia, is actively reviewing the published medical evidence on 3D Mammography, and future decisions on breast cancer screening technology will be based on the best robust medical evidence as that evidence emerges."


    Note that BreastScreen WA cites that 3D screening shows no evidence in being superior in reducing mortality from breast cancer.

    Well, not sure about other women, but I want my tumours found long before the mortality stage. 

    Surely we should be given the latest technology to discover tumours  at a much earlier and smaller size.





  • Thank you so much, @Emma17

    Well that pretty well proves it - 3D Tomosynthesis picks up more breast cancers, earlier and smaller - so there should be a better long term outcome for the patients with BC being caught earlier - and probably with less invasive surgery & followup treatment - so less devastation to patients & less expense on the tax payer!   

    There should be a move to replace all 2D machines with 3D - but I understand that it will not occur any time soon with BreastScreen Australia.  Some radiology places have 3D - but not many.  I am sure that if it improved the detection rates of cancer in testicles - it would be a given!   

    Surely picking up smaller cancers, earlier, will, in the long term, be a massive saving on the health system - so they can't say it is too expensive to implement?

    Sadly, BreastScreen Australia continues to refuse to advise women of their breast density - even tho WA DOES advise their clients of their breast density and have a better 'pick up rate' than most states. 


    Ummmm ..... As for the statement below - that there is no evidence to suggest additional tests are needed for women with dense breast tissue??   

    HELLO???  It has been proven that ultrasounds pick up more tumours in women with dense breast tissue.

    It has been proven that 3D Tomosynthesis picks up more tumours in women with dense breast tissue ......

    @JJ70 and "Can Do at 40" have sent further proof and statistics to BSNSW - yet they ignore it.  It is our lives at risk here - this is not a game that we want to play.

    Matter of fact - I wonder if they are even GAME to give up the statistics on women who've been given "CLEAR" 2D mammogram results - who have then been diagnosed with BC within 2 years of that MG?  I think not. 

    As you say, we have more than enough women on BCNA alone who will testify that they didn't know that having dense breast tissue was a factor in hiding tumours - let alone that the tumours, when found may be bigger & more invasive BECAUSE of not being found.  Imagine if a Poll was taken on women across Australia?

    Sure, it would be a relief for those women who've been given a 'false positive' to learn that they DON'T have BC ..... but it is totally DEVASTATING for those of us who HAVE been diagnosed when we now know that it could have been picked up earlier, when smaller & less invasive and before becoming terminal.  

    Yet this is still their statement!


    I now go to Port Macquarie for 3D scans and ultrasound (currently awaiting my 2 year results) as there are no mammograms in my town & the bus (when here) only has 2D, which missed my own tumours.  I was then re-scanned in Taree, who's mammogram also missed the tumours - only the ultrasound picked up 'something' that they considered worth getting a biopsy of - resulting in the discovery of my tumours, just 4 months after the 'clear' 2D mammogram.

    In the last 12 months, I have been quite 'vocal' on the BreastScreen NSW facebook page regarding the need for better screening and notification of having dense breast tissue (clients advised of requiring ultrasound as well as 3D mammogram) AND the fact that screening is available for from from age 40 with no upper limit (not 50-74 as regularly advertised!) 

    I have been advised by them to stop posting as they believe it may scare the readers - I prefer to call it 'educating' them!  However, even now, every time they put 50-74, I still reply 'Free from 40'.  I recommend everyone else does the same in their states.  It has been Free from 40 since Bob Hawke was Prime Minister!!

    Everyone can address their concerns re Dense Breast Tissue & the incorrect age adverts to cancerscreening@health.gov.au.  Maybe by bombing them with 'facts' we can get it changed!

    The Victorian 3D Trial was at  Maroondah BreastScreen - so assuming they get to keep the machine after the trial (who'd like to ring & find out?) - they'd be top of my list, if using BreastScreen in Vic!  (This is what the trial says re BreastScreen & 3D - it is not endorsed for BreastScreen - only available at other radiology/breast centres.)




    Scary, isn't it?   Even some of your followup scans won't be reliable if done on a 2D machine.   :(   Make sure you demand a 3D/Tomosynthesis mammogram & still have the ultrasound!
  • My breast surgeon has an in house 3D mammogram machine so it’s a one stop shop for me. I don’t have dense tissue but the 3D readings make me comfortable about not having an ultrasound, as I used to feel much more confident about the ultrasound result than the old 2D mammograms. If many people are relying on Breastscreen (as they are encouraged to do) then 3D equipment should be rolling out now.