title: Pancoast tumor presenting as cervical radiculopathy.
abstract: A case of Pancoast tumor presenting as cervical radiculopathy is reported, including the clinical, EMG, and radiologic findings. A 64-year-old man with a two-month history of left shoulder pain and left arm numbness at the medial aspect of the hand and forearm presented for electrodiagnostic examination, and a severe C8 radiculopathy was documented. Subsequent radiologic evaluation (myelogram and routine chest x-ray) yielded the diagnosis of left apical lung tumor (Pancoast tumor), eroding through the C7 and T1 pedicles and T1 vertebral body, with cut-off of the left C8 nerve root. Pancoast tumor has long been implicated as a cause of brachial plexopathy. The EMG presentation of isolated cervical radiculopathy, however, has not been previously reported, despite the tumor's known tendency for local invasion which may include the nerve roots and even the spinal canal in its advanced stages. This patient's normal sensory studies argue against any significant coexisting lower brachial plexopathy. The possibility of Pancoast lesion should be considered not only in the presence of brachial plexopathy, but also when C8 or T1 radiculopathy is found.
authors.affiliation: Division of Rehabilitation Medicine, Hospitals of the University Health Center, Pittsburgh, PA.
authors.forename: M M
authors.initials: MM
authors.lastname: Vargo
authors.forename: K M
authors.initials: KM
authors.lastname: Flood
mesh_terms: D003951:Diagnostic Errors; D004576:Electromyography; D005727:Ganglia, Spinal / Q000473:pathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D009431:Neural Conduction; D010178:Pancoast Syndrome / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000503:physiopathology; D011843:Radiculopathy / Q000175:diagnosis* / Q000503:physiopathology; D011859:Radiography