Your body can synthesize all the lipids it needs save the essentially fatty acids. If you're limiting your fat intake, omega-3 eggs are your best choice, they're rich in phospholipids and essential fatty acids. Omega-6 fats are actually not bad for you, just get them in their natural nut form.

I would be interested in the data behind your statement that low fat diets increase cancer risk. I have seen papers demonstrating the contrary.