It is well known that professional boxers can develop chronic traumatic encephalopathy (dementia pugilistica) due to repeated head trauma. Beside CT findings indicating cerebral atrophy, the presence of a cavum septum pellucidum has been reported to indicate encephalopathy. CT findings in amateur boxers are not as well documented. The aim of this study was to find out if morphological changes could be demonstrated among former amateur boxers using CT and MRI. Two control groups of soccer players and track and field athletes in the same age-range were used for comparison. No significant differences in the width of the ventricular system, anterior horn index, width of cortical sulci, signs of vermian atrophy, or the occurrence of a cavum septum pellucidum were found between boxers and controls. A cavum septum pellucidum was found more often in the controls than in the boxers and is probably not a sign of earlier head trauma. MRI confirm no more findings than CT in this retrospective study.