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fastspinecho t1_j9st4zm wrote

You have two lungs, two liver lobes, two parotid glands, two thyroid lobes, two eyes, two ears, two arms, two thumbs, two legs, two cerebral hemispheres, two gonads, two breasts, etc.

Sometimes the "doubled" organs are so close together that they are considered one (liver, thyroid, brain ...). But that's just developmental happenstance. In some people, the left and right kidneys are combined into one giant "horseshoe" kidney.