Causes Of Horner Syndrome

Lung Cancer

Lung cancer is also linked to Horner syndrome, and in this case, it is called Pancoast syndrome, which is very rare compared to other types of lung cancer. In this condition, cancer develops in the top portion of the lungs and may spread to the brachial plexus. Thus, it can damage the nerves and cause compression to the spinal cord.

The link between Horner syndrome and Pancoast syndrome has been shown in several reports. In a 2016 case report, a fifty-six-year-old male patient showed a spindle cell sarcoma in the top portion of the right lung. With that, he presented miosis and ptosis in the right eye. Another case report, one from 2014, showed a tumor in the upper portion of the right lung in a fifty-nine-year-old male patient, who also presented with ptosis and anhydrosis on the right side. Another piece of research followed a thoracic myxofibrosarcoma male patient who had ptosis and miosis in the left eye. The patient's condition was classified as Pancoast syndrome.

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