is a pocket fixed onto or in a body
tissue or organ, of varying size and structure, but is not connected with the outside. A fatty cyst is a small pouch under the skin that contains fat: it is more often and extensively called lipoma. It is a benign
cyst and grows slowly, not causing any symptoms, aside from the palpation of a small ball under the skin which is painless but can sometimes be unsightly. Their preferred location is the back, shoulders
, and thighs, but can appear anywhere on the body. They usually require no treatment, but can be removed surgically for cosmetic reasons.