Malignant melanoma excision margins: plastic surgery audit in Britain and Ireland, 1991, and a review.

In 1991, 146 consultant plastic surgeons in Britain and Ireland were sent a short questionnaire about their policies for excision margins for primary cutaneous malignant melanoma. 106/146 (73%) replied. 39/106 (37%) considered narrow margin (2-3 mm) excision biopsies adequate in certain cases. The minimum tumour thickness for a margin of more than 1 cm was 1 mm or more for 67/106 (63%) on the leg and for 57/106 (54%) on the back. The maximum margin was specified as 4 cm or more on the leg by 37/106 (35%) and on the back by 42/106 (40%). Other sub-groups of results were analysed. A review of the literature is presented.