What are the clinical characteristics of papillary fibroelastomas?
Clinical characteristics of papillary fibroelastomas include small size (less than 1 cm), mobility, intraluminal or intramural location, and echogenicity which is usually hyperechoic due to the presence of collagen and elastic fibers in the tumor. These tumors typically do not cause symptoms, however if they obstruct a valve or the aortic lumen they can cause an obstruction or regurgitation. In addition, when they become large they can embolize and cause stroke or other complications. 