A lipomyelomeningocele is a fatty mass that is located under the skin on the child’s back. It is usually located in the middle of the back. The mass goes inward to the spinal canal. A lipomyelomeningocele is covered in skin. You can usually see it on the outside of the child's body. It looks like a large lump. The two biggest problems that develop with lipomyelomeningocele in children are: the spinal cord gets stuck (fixed) to the fatty mass and the fatty mass puts pressure on the spinal cord.