13) Horner syndrome
Pancoast tumors (cancers that affect the upper area of the lungs) can affect specific nerves in the neck, eyes, and other parts of the face and thus leads to Horner syndrome. This syndrome is characterized by
- A smaller pupil in the same eye
- Drooping or weakness of one eyelid
- Severe neck and shoulder pain
- Reduced or absent sweating on the same side of the face
This syndrome may also cause weakness of the facial muscles that results in drooping of saliva from the mouth, inability to speak and difficulty in swallowing food.
