Giant cell arteritis (GCA) is a vasculitis affecting mainly large and medium-sized arteries. which the classification of systemic vasculitides refers to as those mainly involving the large vessels. GCA is typified by the involvement of extracranial aortic branches and intracranial vessels. the aorta and its large vessels are being affected most frequently. https://www.roneverhart.com/Fender-Tone-Master-Twin-Reverb-Guitar-Amp-Blonde/