TY - JOUR T1 - Dr. Czihal replies JF - The Journal of Rheumatology JO - J Rheumatol SP - 1899 LP - 1899 DO - 10.3899/jrheum.120442 VL - 39 IS - 9 AU - MICHAEL CZIHAL Y1 - 2012/09/01 UR - http://www.jrheum.org/content/39/9/1899.abstract N2 - To the Editor:We appreciate the comments from Milchert, et al1 on our study evaluating the involvement of femoropopliteal arteries in giant cell arteritis (GCA)2. In their letter, they describe 2 cases with different clinical manifestations of extracranial GCA, including 1 patient with suspected vasculitis of the lower extremities. They discuss the difficulties in discriminating between vasculitis and arteriosclerosis in clinical practice.Detection of a homogenous, hypoechogenic, circumferential vessel wall thickening by color duplex sonography (CDS) has been shown to be specific for … ER -