TCs/CD34+SCs are associated with (a) mature adipocytes (absence of lipoblasts in the tumour; an important finding in the tumour differential diagnosis); (b) thick collagen bundles (in some tumours with abundant fibrous tissue); (c) a prominent vasculature (occasionally hyalinised) and (d) scattered mast cells or groups of lymphocytes. Here, CD34 is linked to neoplasm.