(Of course, that's just for routine mammograms; breast lumps always require a mammogram and/or other tests to start diagnosing whether it might be breast cancer .).
What is the sediment sometimes found in a bottle of wine? The sediment is termed as 'Crust'. It is generally potassium bitartate which adheres to the inside of the wine bottle.
Decanting separates the wine from the sediment, which not only would not look nice in your glass, but would also make the wine taste more astringent. Slowly and carefully decanting the wine ensures that the sediment stays in the bottle and you get a nice clear wine in the decanter, and subsequently in your glass. A second and more everyday reason to decant is to aerate the wine.