Mazzy,
I hope your sister is doing well with treatments. I know it's a particularly tough fight though with Ovarian Cancer. But there are alot of advancements in treatment options and success rates.
I had made that post on Thursday... I'm in the D.C. area and it was on local news and not national news. I did watch it last night and found out a bit more... It doesn't manifest itself the way typical breast cancer does.. There aren't typically lumps but possibly dimpling of the skin. I know they say to look for visual changes in your breast tissues as well as doing regular BSE. They say it's particularly aggressive type and accounts for about 5% of breast cancers.
If anyone wants to find out more, here is a link about this particular type of breast cancer.
http://www.cancer.gov/cancertopics/factsheet/Sites-Types/IBC