Primary Hydatid Cyst of the Thoracic Aorta Revealed by Peripheral Arterial Embolism.

Primitive aortic hydatidosis is exceptional. We report the case of a 55-year-old woman who had pain in her left lower limb for a week. A computed tomographic angiogram showed a multivesicular and fluid-density mass intimately contiguous to the descending thoracic aorta seen on an endoluminal subtraction image and hydatid cysts in the spleen.