POSTN was present both at the invasive margin and in the centre of the tumours (juxta‐tumoural stroma [<100 μm] and pan‐stroma 23), as previously reported 24, while MYH11 and PDPN were found only in the centre (juxta‐tumoural stroma and pan‐stroma) (Figure 2E). This evidence concerns the gene POSTN and neoplasm.