<unk>  (or tubular<unk>  are a result of a congenital abnormality of the<unk>  which can occur in both men and women (also see Hypoplasia), one<unk> or both. During puberty<unk> development is stymied and the<unk>  fail to develop normally and fully. The exact cause of this is as yet unclear; however, a study in 2011 of the cells in the<unk>  of both males and females with tubular<unk>  suggested a genetic link in a disorder of collagen deposition. The condition is thought to affect one to five per cent of<unk> augmentation patients; however, the proportion of the general population affected is unknown as surgery is not always sought.
Tuberous breasts
Supernumerary nipple
Lipoma
Hip dysplasia
Prepubertal hypertrichosis
Breast hypertrophy
Panner disease
Papillomatosis of breasts