In this article by J R C Sainsbury and colleagues (23 September, pp 745-50) the lines in the graph showing the effect of radiotherapy on local recurrence after wide local excision (bottom of p 748) were mislabelled. The upper line, showing better survival without recurrence, should have been labelled “Excision and radiotherapy” [not “Excision only”], and the lower line should have been labelled “Excision only” [not “Excision and radiotherapy”].