What body parts are affected by sirenomelia?

Varies: Signs and symptoms of syringomyelia depend on size and location of cyst in spinal cord. May affect the back of neck, shoulders, arms and hands in beginning. Other symptoms: muscle weakness and wasting, loss of reflexes, loss of sensitivity to pain and temperature Other signs and symptoms may include spasms and weakness in arms and legs. Bowel and bladder function can be affected.