- Treatment of von Hippel-Lindau retinal hemangioblastoma by the vascular endothelial growth factor receptor inhibitor SU5416 is more effective for associated macular edema than for hemangioblastomas. Girmens, J.F., Erginay, A., Massin, P., Scigalla, P., Gaudric, A., Richard, S. Am. J. Ophthalmol. (2003)