Breslow's thickness(redirected from Breslows thickness)
Breslow's thicknesssystem of measurement predictive of melanoma prognosis; i.e. <0.75 mm thick = good prognosis, >0.75 mm thick = less favourable prognosis (see Table 1)
|I||Lesion confined to epidermis (i.e. in situ)|
|II||Epidermal lesion has just invaded into upper dermis|
|III||Epidermal lesion has significantly invaded upper dermis|
|IV||Epidermal lesion has invaded as far as deeper reticular dermis|
|V||Epidermal lesion has invaded through dermis into subcuticular tissues|
The greater the depth of lesion penetration, the more liable it is to undergo metastasis.