No. That's impossible
yes of course
Gynecomastia is the medical term meaning female-like breast growth in a man.
A chicken has one breast but it can be split into 2 or maybe even 4 and when someone would like a whole breast they say "One whole chicken breast, unsplit."
No. That would require hormonal treatments and/or surgery.
"You look like a breast/chest "
As a female and like all the mammifers, woman have to feed her progeniture. The presence of a breast allows the female human to make milk and to deliver this food to her baby.
Like any other female's breasts.... but darker.
They may appear to be female until they become fully grown... If they are all fully grown and still look like females, then you are very unlucky
Medical Cancer signs will depend on the type of cancer. For instance breast cancer symptoms will be pain in breast, lump in breast. Lung cancer will show the symptoms like coughing, chest pain
Impossible- there's no easy and safe way to flatten your chest, as this would constrict your chest and possibly cause serious internal damage. I recommend breast reduction surgery or the like.
Mostly to impress female birds. ------------------------------------------------------ Above is BS because even female birds have large breast/chest muscles. Male coloring (plumage) is partly to attract a mate and partly to provide distraction to keep predators from the nest. In order to fly birds must have a broad chest with large breast muscles to pull forcefully on the wings.
Go see a doctor. it could be something like a calcium build up.