| The pathogenesis of cystic adventitial artery disease is controversial. |
| Nourishment is provided to the vein wall by vasovasora, which enter through the adventitial layer. |
| Aneurysmal development is caused by weakness in the muscular tunica media and stretching of the tunica intima and adventitial layers. |
| To our knowledge, there is no report on MR arthrography in cystic adventitial disease. |
| This is restricted to superficial adventitial bursa. |
| Intimai proliferation and adventitial thickening may further reduce the cross-sectional area of the pulmonary vascular bed. |
