Ductal carcinoma in situ

Q: What is the first imaging study you would do on a 29 year old with a breast complaint? show answer

A: Ultrasound.

Q: What percentage of breast carcinomas have a positive first line family history of breast carcinoma? show answer

A: About 10%. These people are at high risk. The rest of the 90% are at risk because they are female. Most cancers you will see day to day have no family history which is why "average" risk is potentially misleading for the lay public.

Q: What is the danger of estimating the extent of DCIS on mammography? show answer

A: Mammography underestimates the extent of disease in DCIS

Q: Why image the contralateral breast? show answer

A: To get a baseline of the contralateral breast for future reference. Whatever triggered the disease in the right breast is presumably still there to do the same in the left breast.