VEGFD and lymphangioleiomyomatosis: The lymphangiogenic factor VEGF-D is elevated in LAM, correlates with disease severity and response to treatment, and is associated with lymphatic involvement (McCormack et al., 2011; Glasgow et al., 2009; Young et al., 2013; Seyama et al., 2006; Budde et al., 2016; Malinowska et al., 2013).