A congenital nevus is a proliferation of benign melanocytes that is either present at birth or develops shortly afterwards. Congenital nevi are usually classified by size: small (less than 1.5 cm in diameter), medium (larger than 1.5 cm and up to 20 cm) or giant (measuring 20 cm in diameter or larger).
Scoliosis is a common condition related to syringomyelia in children; in fact, some studies have shown that more than 50% of children with a syrinx have abnormal spinal curvature.coliosis can be caused by congenital conditions, neurological conditions (like SM), or can be of unknown origins. 80% of scoliosis cases have an unknown cause and are labeled idiopathic. Treatment options include observation, bracing, and surgery.
Causes. There are many causes of scoliosis, including congenital spine deformities (those present at birth, either inherited or caused by the environment), genetic conditions, neuromuscular problems, and limb length inequality. Other causes for scoliosis include cerebral palsy, spina bifida, muscular dystrophy, spinal muscular atrophy, and tumors.