Development and treatment of traumatic pseudoaneurysm of common carotid artery

doi:10.3969/j.issn.1001-9448.2001.03.011

Abstract：Objective　To study the development of traumatic pseudoaneurysm (TPA) of internal carotid artery (ICA) in rabbits and discuss the endovascular therapy of TPA of internal carotid artery in human. Methods　Twenty TPAs were surgically made in the rabbit right common carotid arteries. The TPAs were examined by color Doppler ultrasonography (CDU) and pathology. Results　Six to twelve days after operation, pulstile masses occurred in all the rabbit right common carotid arteries, which were proved to be TPAs by CDU. Two weeks after operation, the size of TPAs was less than 5 mm and the wall of TPAs was compossed of a layer of thin and inuniform thrombus. Three to four weeks after operation, the diametre of TPAs were increased to 10.5～18.0 mm. Gross pathologic examination showed that there was a potential lacuna between TPA and peripheral tissue with a wall of 2～3 mm in thickness, which was composed of a layer of compact fibro-connective tissue. Six weeks after operation, the diametre of TPAs was 35.5～52.0 mm and the wall became uneven, the tip of which was extremely thin. Conclusion　Parent artery embolization is the safest and most effective way of treating TPA of ICA in its early stage of formation and development. TPA in stage can be cured by occlusion of the lumen with microcoil(MC).