Hi! thanks for giving me another opportunity to discuss about some early lumps in the posterior midline of our body; as this is common, generally in pediatric age group and do not disturb a person s health! Anyways, what are these? Yes, these are benign; not infective, not cancer and not going to kill you but will cause cosmetic problems, physical inconvenience and fear of getting hurt/infected there... These could be some congenital cyst like dermoid/epidermal cyst, lipoma, neurofibroma or a skin fibro-epithelial polyp/skin tag...! Therefore get to your surgeon for a direct examination, tests if necessary and to relieve your concerns! regards,