<prompt> Which of the following is not of prognostic significance to choroidal melanoma?Presence of retinal detachmentSize of the tumourCytology of the tumor cellsPresence of extraocular extension  <response>: A i.e. Presence of retinal detachment Secondary non rhegmatogenous exudative retinal detachment is a common sign of choroidal melanoma and has no prognostic significanceQ. Choroidal Melanoma Melanoma of choroid is the most common primary intraocular tumor in adultsQ and accounts for 85 of uveal melanomas. 