What is surgery like for gynecomastia?

Simple: It can be done as an outpatient using liposuction. Go to a surgeon who does this regularly.

Depends on Situation: I have found that gynecomastia, if persistent, is often best treated with partial excision of the prominent glandular tissue as well as liposuction surgery of the peripheral chest area. If the prominence of the chest wall is caused by adipose tissue, then liposculpture surgery alone may suffice. For patients with excess skin, common after weight loss, skin excision may also be necesary.

Fairly routine: Gynecomastia surgery usually involves a combination of liposuction and direct tissue excision through a small incision at the lower edge of the areola (the pigmented area surrounding the nipple). Rarely when the skin is very loose, it may be necessary to also remove skin. Recovery is rapid, a compression vest helps prevent fluid build up and a drain may be used for a few days.