None. Conflicts of Interest: Ren M, None; Zeng JH, None; Luo QL, None; Bi F, None; Chen J, None.
Min Ren, Ji-Hong Zeng, Qing-Li Luo, et al. Primary malignant melanoma of lacrimal sac. Int J Ophthalmol, 2014,7(6):1069-1070