Wiki Full thickness excision

[vkratzer]

I have a provider who sometimes uses a punch biopsy tool for a full thickness excision of an entire lesion. Example - .7 cm lesion excised using a 1 cm punch tool. Is this enough information to determine the margin is .3 cm. Total size of excision would then be .7 +.3 x 2 = 1.3 cm. or should the size of the excision be 1 cm?

Vicky

 

[mitchellde]

Your margin would not be .3 it would be .15 so the excision size is 1 cm. Your excision size could not exceed the size of the tool. Yes 1 cm minus the lesion size of .7 equals .3 but that is not the size of the margin on each side, that is the amount total that you have for the margins. So for each side divide by 2 so the formula winds up being .7+(.15x2) equals 1

 

[vkratzer]

Thanks so much for clarifying.