title: Comments on uncommon changes in retinal veins observed in cases of diabetic retinopathy.
mesh_terms: D000368:Aged; D003097:Collateral Circulation; D003930:Diabetic Retinopathy / Q000175:diagnosis*; D004108:Dilatation, Pathologic; D006801:Humans; D008875:Middle Aged; D012169:Retinal Vein