A. Antiphospholipid antibody syndrome A. Antiphospholipid antibody syndrome. A number of skin lesions can be seen, including ecchymosis, livedo reticularis and racemosa, leg ulcerations, bullae, splinter hemorrhages, superficial venous thrombosis, atrophie blanche, and, as shown here, extensive necrosis. B. Anticardiolipin antibody. C. Lupus anticoagulant. Source: The Vascular Purpuras, Williams Hematology, 9e Citation: Kaushansky K, Lichtman MA, Prchal JT, Levi MM, Press OW, Burns LJ, Caligiuri M. Williams Hematology, 9e; 2015 Available at: http://accessmedicine.mhmedical.com/DownloadImage.aspx?image=/data/books/1581/kau_ch122_f008.png&sec=108082552&BookID=1581&ChapterSecID=108082497&imagename= Accessed: December 23, 2017 Copyright © 2017 McGraw-Hill Education. All rights reserved