Fig. 17. Prevalence of various primary types, in combined series. “Other” includes the following: neuroblastoma (1.6%); testicle (1.2%); adrenal, pancreas, and thyroid (0.8% each); bile duct, carcinoid, fibrosarcoma, choroidal melanoma, ovary, parotid, and uterus (0.4% each). (Goldberg RA, Rootman J, Cline RA: Tumors metastatic to the orbit: a changing picture. Surv Ophthalmol 35:1, 1990.)