Hi here is the report which diagnosed takayasu s arteties disease. CT VASCULAR ANGIOGRAPHY CLINICAL DATA: History of numbness and weakness in left arm and leg for 6 months, unable to put weight on arm. Pain in both legs. TECHNIQUE: 0.5 mm reconstructed images from scan performed on multislice CT were reviewed on workstation using different window width and level settings. CT vascular angiography. FINDINGS: Visualized heart, pulmonary trunk and main pulmonary arteries do not show any abnormality. Few linear hypodensities are noted in pulmonary trunk at its origin, may be artifactual/flow related. Ascending aorta is normal in caliber (AP diameter 2.4 cm) with smooth walls. Arch of aorta and visualized descending thoracic aorta is diffusely concentrically mildly thick-walled. Thickened walls show enhancement on late arterial phase. However, no aneurysm or focal area of stenosis is noted. Left subclavian artery is concentrically thick walled. It is severely stenosed and very thin streak of contrast is noted in its lumen on late arterial phase. However axillary artery, brachial, radial and ulnar arteries as well as their palmar branches are patent and better visualized on late arterial phase. There is suggestion that the axillary artery is being supplied by collateral arteries from the chest wall. There is concentric diffuse wall thickening of the left proximal common carotid artery, starting from its point of origin (spanning a length of approximately 5 cm) with mild-to-moderate luminal narrowing. However, distal left common carotid, left ECA, ICA and its major intracranial branches are normally visualized and appear patent. Left vertebral artery is also significantly thick walled and severely stenosed in its proximal part. It is patent near base of skull. Mild diffuse concentric wall thickening of brachiocephalic trunk, right proximal common carotid and subclavian arteries is noted without any significant luminal narrowing. Right common carotid artery, ECA, ICA and its intracranial branches are patent. Right vertebral artery is normal in caliber. Basilar and rest of the major vessels of posterior circulation are also patent. Visualized lung apices appear normal. There are mildly enlarged left cervical lymph nodes, largest level II lymph node measures 12 mm in short dimension. Visualized osseous structures and soft tissues do not show any abnormality. IMPRESSION: - Findings are suggestive of aortitis and major vessels arteritis most likely Takayasu arteritis, involving aorta and its major branches with severe narrowing and stenosis of the left subclavian artery. Lesser degree of changes in left vertebral and proximal common carotid arteries. Details as above. Furthur evaluation by CTA abdomen and lower limb is suggested to rule out possibility of involvement of rest of the vessels. Sgould i take steroids to recover?any suggestions please.