Cutaneous vascular tumours: an update.

This review evaluates changes in vascular nomenclature particularly in the category of vascular tumours of intermediate malignancy that includes the various haemangioendotheliomas, Kaposi's sarcoma and giant cell angioblastoma. Recently described entities in this category, including the latter tumour and composite haemangioendothelioma, are described. Several newly characterized vascular tumours not included in recent classifications of vascular tumours are also summarized. These include acquired elastotic haemangioma, symplastic haemangioma, cutaneous epithelioid angiomatous nodule and cutaneovisceral angiomatosis with thrombocytopenia. The newly introduced clinical classification of congenital haemangiomas into non-involuting and rapidly involuting variants and radiation-induced atypical vascular lesions are also reviewed.