This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Misc., Subject name: Pathology
Which histological type of uveal malignant melanoma has worst prognosis? 
Select and explain. 
A. Spindle A, B. Spindle B, C. Epitheloid, D. Mixed
C: Epitheloid
Answer: C: Epitheloid 
Explanation: Ans. c (Epitheloid uveal malignant melanoma). (Ref. Robbin Pathologic Basis of Diseases, 6th/l366)INTRAOCULAR MELANOMAS# Constitute the most common primary ocular malignancy in whites.# Choroidal melanoma are the most intraocular malignant tumors of eye in adults.# "Collar button" shaped tumor of choroid is classical.# Callender's classification for malignant uveal melanoma is:A. Spindle AB. Spindle BC. Epitheloid (most common & worst prognosis)D. Necrotic.