Two Cases of Sacrococcygeal Chordoma

Two cases of sacrococcygeal chordoma, were surgically treated in our hospital. One case was discovered after investigation of an episode of bruising on the hip, and the other case was diagnosed two years after the excision of rectal cancer that had no specific histological features.Both cases had partial destruction of sacral bone in the lateral plain X-ray film of the pelvis and a defined mass anterior to the lower sacrum was seen on MRI. We performed complete excision of tumor using the posterior approach and retained the unilateral S3 nerve. Postoperatively there was no neurological disturbance except the symptom of slight residual urine.