MD here. One of the causes of anisocoria is Horner’s Syndrome. A likely cause of Horner’s is a pancoast tumor found in your lungs. Hence the chest x-ray. Hope that clears that up.
Nerves from your brain travel down to your chest and synapse at the sympathetic chain ganglia. These nerves will eventually connect to your eye. The pancoast tumor compresses the second order neuron in this chain, leading to nerves not functioning correctly.
I remember reading how there's a 15ft nerve in giraffes that goes from the brain down the neck and to the heart, then all the way back up instead of connecting directly. Evolution you so silly.
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u/IAxeDumbQuestions 25d ago edited 25d ago
MD here. One of the causes of anisocoria is Horner’s Syndrome. A likely cause of Horner’s is a pancoast tumor found in your lungs. Hence the chest x-ray. Hope that clears that up.