No gynecomastia is given if no increased accumulation of fat and glandular breast tissue is present below the areola.

A genuine gynecomastia is given if glandular breast tissue, but no accumulation of fat, is increasingly present behind the areola.

A hybrid is given is if glandular breast tissue and fat increasingly accumulate behind the areola and the thoracic region.

A pseudo gynecomastia is a adipomastia. Fat, but no glandular breast tissue, is increasingly present behind the areola.