fifty-three patients ( 34 who had diffuse scleroderma , and 19 who had crest syndrome [ calcinosis , raynaud 's phenomenon , esophageal dysmotility , sclerodactyly , and telangiectasias ] ) were studied by noninvasive procedures , including resting electrocardiogram ( ecg ) , continuous 24-hour holter ecg monitoring , m-mode echocardiography , and 2-dimensional echocardiography .
C0036421
diffuse scleroderma
C0206138
crest