The unexpected detection of a common (CCA) or internal (ICA) carotid artery thrombus at angiography or carotid duplex ultrasonography (CUS) is unusual. [1][2][3][4] To our knowledge, no previous documentation of an apparent free-floating thrombus within the CCA alone exists. We report such a phenomenon in a 45-year-old woman.
PATIENTA 45-year-old right-handed woman began having severe vomiting and diarrhea. During one of several trips to the bathroom, she was heard falling to the floor, and was found unable to move her right side. She presented to our hospital four hours after symptom onset. She had no recent illnesses and had not been taking any medications including hormone replacement therapy or birth control pills. Cerebrovascular risk factors included a 25-year, one pack per day smoking history and a family history of heart disease and stroke. Her initial vital signs were unremarkable. Her general examination was remarkable for a harsh, ABSTRACT: Background: The observation of an intraluminal common carotid artery thrombus overlying a wall defect at ultrasonography or angiography is unusual. To our knowledge, there are no previous reports of a free-floating thrombus in the common carotid artery. Case Report: A 45-year-old woman who was previously healthy and on no medications presented with acute hemiparesis and aphasia. Following testing that included carotid duplex and trancranial Doppler ultrasonography, diffusion-weighted magnetic resonance imaging, and digital subtraction angiography, the patient underwent emergency open embolectomy. No underlying wall defect was seen at the time of imaging or surgery. No obvious hypercoagulable state could be identified. Her NIH Stroke Scale score improved from 26 at admission to 2 at three months and 1 at one year. Conclusions: Multimodal imaging may have improved diagnosis and management in this patient with a unique finding. The source of the thrombus remains obscure.RÉSUMÉ: Thrombus flottant idiopathique de la carotide primitive. Introduction: Il est inusité d'observer un thrombus intraluminal au niveau d'une lésion de la paroi de la carotide primitive à l'échographie ou à l'angiographie. À notre connaissance, il n'existe pas de cas rapporté d'un thrombus flottant dans la carotide primitive. Histoire de cas: Une femme âgée de 45 ans, en bonne santé et ne prenant aucun médicament, a consulté pour une hémiparésie aiguë avec aphasie. Suite à une investigation comprenant un duplex carotidien, une échograplie Doppler transcrânienne, une résonance magnétique par diffusion pondérée et une angiographie digitalisée par soustraction, la patiente a subi une embolectomie ouverte d'urgence. Aucune lésion pariétale sous-jacente n'a été observée à l'imagerie ou à la chirurgie. Aucun problème d'hypercoagulabilité n'a été identifié. Son score au NIH stroke scale s'est amélioré, de 26 qu'il était à l'admission à 2 trois mois plus tard et à 1 après un an. Conclusions: L'imagerie multimodale a probablement aidé au diagnostic et au traitement de cette patiente porteuse d'une anomalie ...