NF1 and connective tissue disorder: Of the 40 cases reported from 1973 to 2012, approximately two-thirds were iatrogenic pseudoaneurysms associated with sternotomy or placement of central venous catheters or pacemaker leads, while the remaining cases were due to vasculitis, connective tissue diseases, neurofibromatosis type 1 (NF-1), fibromuscular dysplasia, and atherosclerosis, or were idiopathic [1].