Sciatic nerve compression by an aneurysm of the internal iliac artery

Large Sized Common Iliac Artery Aneurysm with Thrombus Developing a Diagnostic Confusion in a Patient with Sciatica

“…Iliac artery aneurysm has a close anatomical relationship to the ureter, bladder, colon, pelvic vessels, and femoral or sciatic nerve. The neurological symptoms are usually due to the compression of the nerves of segments L5 and S1, which are located directly posterior to the internal iliac artery [ 3 , 10 ]. Hypertension and arteriosclerosis are the most important etiological factors in the formation of aneurysm, but connective tissue disorders such as the Marfan and Ehler-Danlos syndrome, luetic, traumatic, and post-partum aneurysms have also been reported [ 3 ].…”

“…The neurological symptoms are usually due to the compression of the nerves of segments L5 and S1, which are located directly posterior to the internal iliac artery [ 3 , 10 ]. Hypertension and arteriosclerosis are the most important etiological factors in the formation of aneurysm, but connective tissue disorders such as the Marfan and Ehler-Danlos syndrome, luetic, traumatic, and post-partum aneurysms have also been reported [ 3 ]. In addition, such as transvaginal needle biopsy, renal transplantation, lumbar disc surgery, and radiation therapy could be an iatrogenic cause of pseudoaneurysm or arteriovenous fistula in the pelvis [ 5 , 11 , 12 , 13 , 14 ].…”

“…A sciatic nerve lesion caused by an aneurysm in the pelvic cavity is also rare, hence, it may cause diagnostic confusion in patients presenting with radiculopathy. When a patient has sciatica or radicular symptoms, the clinician usually looks to the spine first for the origin of the symptoms, while extra-spinal causes such as an aneurysm are less commonly considered during the differential diagnosis [ 2 , 3 ].…”

Lumbosacral plexopathy due to a rupture of a common Iliac artery aneurysm

“…Sciatic nerve lesions due to aneurysms in the pelvic cavity are rare; hence, it may cause diagnostic confusion 8 . Acute sciatica with neurological deficit in a lower limb/s is commonly due to lumbosacral radiculopathy, but can also be due to lumbosacral plexopathy 9…”

“…Sciatic nerve lesions due to aneurysms in the pelvic cavity are rare; hence, it may cause diagnostic confusion. 8 Acute sciatica with neurological deficit in a lower limb/s is commonly due to lumbosacral radiculopathy, but can also be due to lumbosacral plexopathy. 9 When a patient has sciatica/radicular symptoms, the clinician usually looks to the spine for the origin of symptoms, extraspinal causes are less commonly considered in the differential diagnosis.…”