Full or partial removal? I see conflicting opinions regarding gland removal for gynecomastia?

I prefer in most cases do perform a partial tissue removal through direct excision and Lipo of the chest to avoid a chest wall deformity result. 

Most surgeons try to leave a cuff of subareolar tissue right under the areolar skin to avoid a depressed "saucer" deformity of the nipple region. This cuff can be 1-3cm or so in thickness depending on your overall breast skin and fat thickness vs the amount of gland that is bulging the central area. The majority of the gland is removed but by definition at least a small amount will remain unless the surgeon were to completely resect all the way to the undersurface of the nipple, which would be risky from the standpoint of blood supply compromise to the nipple as well as increase the risk of saucer deformity. Most of the time the tissue is removed "en bloc" as a mass from the incision without mincing it into pieces as this is the more elegant and surgically precise way to do it. Additionally, it is common to send this tissue to pathology for analysis to make sure it is benign gynecomastia. Liposuction is also used in most patients to blend the transition from the subareolar region to the rest of the breast.