Selective medium for MRSA.

Marking of excision margins of discrete skin lesionsWe would like to draw the attention of readers to a method of marking the lateral margins of discrete skin lesions which is of particular value in lesions such as malignant melanomas or basal cell carcinomas.The normal skin at the periphery of the ellipse of skin surrounding the lesion is marked with the tip of a scalpel previously dipped in Indian ink or equivalent dye and the tip of the scalpel is then run around one half of the perimeter of the skin biopsy specimen as illustrated.Following this, transverse and cruciate blocks of the lesion are taken, as required.This method is much quicker and more convenient than painting lateral cuta- neous margins with ink and is readily applicable to excision biopsy specimens of skin lesions in nearly all situations.