A case of spontaneous acute infrarenal aortic dissection, with extensi
on to the right common iliac artery and proximally to just below the o
rigin of the renal arteries is presented. This dissection did not invo
lve the visceral vessels nor the iliac system. The diagnosis was made
with ultrasonography and computed tomography, without the need for ang
iography, and confirmed during surgical intervention, in which, prosth
etic replacement of the affected segment was carried out.