Abnormal morphology of the choroidal vasculature Polypoidal choroidal vasculopathy 2017-12-14T13:39:58Z The presence of choroidal polyps and BVN can lead to recurrent episodes of exudative retinal detachment, serous or hemorrhagic pigment epithelial detachment (PED), subretinal hemorrhage, and subretinal exudation. The presence of aneurysmal 'polypoidal' lesions in the choroidal vasculature. The aneurysmal dilatations, also known as polyps, may be found at subfoveal, juxtafoveal, extrafoveal, peripapillary or even peripheral regions. These polypoidal dilatations may be visible as reddish-orange subretinal nodules during ophthalmoscopic examination. The polypoidal lesions are best detected on indocyanine green angiography (ICGA) and might be associated with a branching vascular network (BVN) of neovascularization.