unusual case of hydatid cyst

Hydatidosis is a parasitic disease in all over the world which is caused by a Cestode [tape worm]. Liver, lung, and brain are the most Common involved organs and involvement of muscles and bones is unusual. We report a 32 years old man who had low back and radicular leg pain. He had a paravertebral mass with involvement of Spinal column. This patient was operated with differential diagnosis of tumor or hydatid cyst. The final diagnosis was hydatidosis of paravertebral muscles and vertebral column