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Resume Le thrombus flottant de la crosse aortique est une cause rare et souvent meconnue d’evenements emboliques peripheriques. Nous rapportons l’observation d’une patiente presentant des manifestations emboliques peripheriques recidivantes : ischemie aigue du membre superieur gauche et accident vasculaire cerebral transitoire. Le bilan (echocardiographie transœsophagienne et angio TDM) a mis en evidence un thrombus de 12 mm de l’arche aortique. L’evolution a ete bonne sous traitement anticoagulant. Ce diagnostic ne doit pas etre meconnu dans le bilan d’une pathologie emboligene, sous peine de lourdes sequelles fonctionnelles causees par un retard diagnostique important.

Floating thrombus in the aortic arch is a rare and often under-diagnosed source of peripheral arterial embolic events. We report a case of a patient seen with arterial embolic events: ischemia of the left superior limb and transient stroke. The diagnosis was performed with transesophageal echocardiography and computed tomography. The thrombus completely disappeared after 15 days of oral anticoagulant therapy. Although rare, this diagnosis mustn't be overlooked in the search for an etiology of recurrent and disseminated peripheral ischemic events because the detrimental functional risk related to a delayed diagnosis.

We report two cases of hydatic cyst with rupture into the aorta in two young patients cared for at the Ibn Sina hospital in Rabat, Morocco. In the first patient, a false hydatic aneurysm of the descending thoracic aorta was discovered at surgery performed for suspected hydatic cyst of the lower lobe of the left lung. Despite reconstruction with a prosthetic graft, the patient died peroperatively due to exsanguination via uncontrollable bleeding through the aneurysmal sac. The second case was a 20-year-old woman whose false hydatic aneurysm of the thoracoabdominal aorta was disclosed by embolic ischemia of the lower limbs. Aorto-aortic reconstruction was followed by medical treatment with albendazol. During follow-up, the patient developed a hydatic cyst of the kidney and a parietal cyst. Both were treated surgically. An analysis of these two cases and 9 others reported in the literature concerning arterial involvement in hydatic disease revealed the characteristic clinical, radiological and therapeutic features of this rare but serious complication.