The development of scar is a rare complication of lung tuberculosis which was yet not often demonstrated in the radiologic literature. We report on a 71 year old male suffering by lung tuberculosis in an active stage which developed lung cancer in the region of tuberculotic scar clearly depicted on computed tomography. To the best of our knowledge this is the first reported computed computed tomography control series dealing with this problem. Additionally we report on histopathologic findings showing an early cancer in the surrounding of a tuberculotic scar.