We describe the initial presentation and followup of a 54-year-old Caucasia
n woman who presented in 1995 with bilateral arteritis of the axillary arte
ries and acute onset dyspnea. Chest radiograph, chest fluoroscopy, and pulm
onary function studies confirmed the diagnosis of right hemidiaphragmatic p
aresis. Prednisolone and methotrexate therapy and short term anticoagulatio
n were initiated and she experienced no further sequelae during 2 years of
followup.