AIMS. The aim of this study was to evaluate the diagnostic attitude and the results obtained after surgery in cases of pseudo-occlusions of the carotid artery.
PATIENTS AND METHODS Between 1995 and 2000, 13 cases of pseudo-occlusion of the internal carotid artery were performed (3.06% of carotid surgery carried out). Diagnostic criteria were as follows. Echo-Doppler: complete occlusion with its origin in the internal carotid artery, damped distal signal; arteriography: occlusion with its origin in the internal carotid artery, filiform distal part, string-sign. Clinical presentation was: 53.84% cerebral infarction, 23.07% TIA and 23.07% were asymptomatic. The 13 patients were submitted to echo-Doppler and nine were examined using arteriography. Two patients were operated on without arteriography because of unstable neurological clinical features. A surgical exploration was performed in 100% of the cases.
RESULTS In seven cases, revascularisation of the internal carotid artery was carried out (53.84%) and in six cases it was ligated (46.16%). Echographic monitoring (from 1-4 years, average 2 years) showed permeability in the seven revascularised cases; in one case restenosis was detected between 31-50% at 2 years’ follow up. In the clinical controls (from 2 months to 4 years, average 30 months), one patient who was not revascularised was seen to have symptoms of TIA at one year and two months.
DISCUSSION Since neither arteriography nor echo-Doppler can predict when it will be possible to revascularise the internal carotid artery, and because we did not observe an increase in surgical morbidity-mortality, we believe surgical exploration is useful. In our study 53.84% of the series were successfully revascularised.
KeywordsCarotid arteryCarotid stenosisPseudo-occlusion of the carotid arterySupra-aortic trunks
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