Vascular mimicry in head and neck tumours

Vascular mimicry in cultured head and neck tumour cell lines

INTRODUCTION Vascuologenesis is the de novo establishment of blood vessels and vascular networks from mesoderm-derived endothelial cell precursors (angioblasts). Recently a novel mechanism, by which some genetically deregulated and aggressive tumour cells generate "micro-vascular" channels without the participation of endothelial cells and independent of angiogenesis, has been proposed. This ha...

Neural tumours of the head and neck.

OBJECTIVE To document the pattern of occurrence of all primary neural tumours arising in the neck and craniofacial region over the period 1982 to 1991. DESIGN A retrospective study. SETTING Cancer Registry, Nairobi, Kenya. RESULTS Out of the 289 cases who were identified to have had whole body neural tumours, 225 (77.8%) had the lesions distributed in the neck and craniofacial area. While...

imaging of vascular masses of the head and neck

the classification and imaging appearances of vascular masses of the head and neck are reviewed. the radiological appearances of congenital vascular masses (infantile haemangiomas and other congenital vascular tumours, high-flow and low-flow vascular malformations), acquired vascular masses (benign and malignant tumours, non-neoplastic lesions) and other hypervascular masses are described and i...

Imaging of perineural spread in head and neck tumours

Perineural tumour spread refers to a contiguous neoplastic extension along a nerve. As it may be clinically silent, imaging plays a pivotal role in the evaluation and delineation of perineural infiltration in head and neck malignancies, which in turn affects treatment planning. This article focuses on the imaging features of perineural spread of head and neck tumours. The important potential pe...

Second malignant tumours in head and neck cancer.