[Results of surgical treatment for the intervertebral disc protrusion within thoracic spine]. Wyniki operacyjnego leczenia protruzji krazka miedzykregowego w cześci piersiowej kregosłupa. Results of surgical treatment for intervertebral disc protrusion within thoracic spine in 4 cases are presented. Protrusion had caused spinal compression resulting in neurological impairment (plegia). There were 3 females and 1 male, all in their forties or fifties. Two cases are presented in details, with radiological investigations included. Lateral approach was used at surgery. Neurological deficits subsided completely in all cases. Follow-up ranged from 1-15 years, mean 8 years.