Aortic angiosarcoma masquerading as a thoracic aortic aneurysm

A computed tomography (CT) scan with contrast prior to graft repair of patient's presumed aneurysm. Note the eccentric outpouching of contrast and wall thickening.

A preoperative computed tomography (CT) scan with contrast one month after initial visit and workup for isolated abdominal pain. The maximal aortic diameter measured from this CT scan was 60 mm, 5 mm larger than before.

A 3-D reconstruction image status post endograft deployment demonstrating graft location in the thoracic aorta.

A computed tomography (CT) scan with contrast taken two months postoperatively when the patient returned to the hospital complaining of back pain. The lesion increased significantly in size since the last visit to a maximal diameter of 80 mm. Of note, there is no appreciable extravasation of contrast into the growing lesion.

A coronal section of the positron emission tomography (PET) demonstrating hypermetabolic foci in the wall of the aorta and in a single focus of the spleen.