The Study Of Angiography And Intravascular Embolization For Hypervascular Neoplasms And Arteriovenous Malformation In Head And Neck

Purpose: To evaluate the value of digital subtraction angiography．DSA) on the diagnosis of hypervascular neoplasm and arteriovenous malformation(AVM) in head and neck, and to investigate the effectiveness of intravascular embolization on them. Materials and methods: Angiography of 53 hypervascular neoplasms and arteriovenous malformation were analyzed and effectiveness of 45 embolization procedures was estimated.Results: Dense tumor stains were constantly demonstrated in 9 cases of neck paragangliomas, and whereas the bifurcations were enlarged in 8 of 9 cases. Nasopharygeal angiofibromas could be supplied by homolateral EGA, ICA and contra-lateral EGA. ICA involvement in tumoral blood supply aggravated risks of surgery in all operated cases, and the intraoperative blood loss was significantly decreased in the embolized cases. In the 8 cases embolized alone, two was embolized three times, three were embolized twice and the other one case once. No recurrence was detected during 3-15 months follow-up (7 months on average). Of the other nine operated cases, the intraoperative haemorhage was minimal and they were free of recurrence for 3-10 months (5.6 months on average).Conclusions: Angiographic study is of great value for the diagnosis of hypervascular head and neck neoplasms and arteriovenous malformation; embolizations could minimize intraoperative blood loss and lessen the risks of surgery, and should become a routine adjunct to surgery. Embolization may be curative for some soft tissue mainly AVM in oral and maxillofa-cial region.