Definition of Pancoast's syndrome in US English:

Pancoast's syndrome

(also Pancoast syndrome)

noun

Medicine
  • A syndrome comprising pain, loss of sensation, and muscle weakness in the shoulder and arm, accompanied by Horner's syndrome, resulting from invasion of or impingement upon the brachial plexus and cervical sympathetic nerves by a tumour or other mass in the apex of the lung.

Origin

1930s. Described by Pancoast 1924, in Jrnl. Amer. Med. Assoc 83 1407.