Brachial plexus neuropathy is an unfortunate complication that sometim
es follows radiotherapy to the axillary and supraclavicular regions. A
patient is described who, 30 years after radiotherapy for Hodgkin's d
isease and more than 10 years after the development of radiation-induc
ed bilateral brachial plexus neuropathy, presented with bilateral diap
hragmatic weakness secondary to bilateral phrenic nerve weakness, Prev
ious radiotherapy was the most probable cause of the condition.