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Related to Pancoast's syndrome: Horner's syndrome
1. radiographic shadow at the apex of the lung, neuritic pain in the upper limb, atrophy of the muscles of the arm and hand, and Horner's syndrome, observed with a tumor near the apex of the lung, due to involvement of the brachial plexus.
2. osteolysis in the posterior part of one or more ribs and sometimes involving also the corresponding vertebra.
Etymology: Henry K. Pancoast, American radiologist, 1875-1939
1 a combination of signs associated with a tumor in the apex of the lung. The signs include neuritic pain in the arm, atrophy of the muscles of the arm and the hand, and Horner's syndrome and are caused by the damaging effects of the tumor on the brachial plexus and sympathetic ganglia.
2 an abnormal condition caused by osteolysis in the posterior part of one or more ribs, sometimes involving associated vertebrae.