A case report of a ruptured dissecting aneurysm of the renal artery into the perinephric region. The patient presented at hospital with symptoms of severe acute colicky right flank pain with rapid deterioration. CT image demonstrates definite diagnosis and she recovers well after nephrectomy. The histology of the renal artery shows a dissecting renal arterial aneurysm due to cystic medial degeneration of the arterial wall.
ruptured dissecting aneurysm of renal artery, cystic medial degeneration of arterial wall,cystic medial necrosis