Aside from swelling and bruising, for Grade 1 and 2,  you can expect your chest to be flat and asymmetrical.
Know that this is only temporary.

For Grade 3 and 4, a drain will be placed after the surgery.
The drain will be removed after 2-4days.

Discomforts, slight pain and restriction of movement should also be expected especially on the 1st 24 hours after surgery.