@entity221 of unknown origin: XXXX presenting with persistent cough and elevated serum ferritin levels.

@entity1018 @entity1 @entity1148 @entity353 @entity417 @entity5 @entity226 @entity448 @entity3468 @entity10 @entity854 @entity2760 @entity158 @entity1413 @entity221 @entity309
BACKGROUND: @entity221 of unknown origin (FUO) at the present time is most frequently caused by @entity5 and less commonly by infection. Currently, @entity1413 ( @entity1413 ) are an uncommon cause of FUO because most are readily diagnosable by serologic methods and do not remain undiagnosed for sufficient time to present as FUOs. @entity1413 presenting as FUOs not readily diagnosable with specific tests include late-onset @entity309 , adult @entity309 , and @entity2760 rheumatica/ @entity226 (TA). TA, or @entity226 , is an uncommon @entity3468 of the mid- and large-sized extracranial arteries of the head and neck and is a rare cause of FUO. TA is characterized by @entity10 , scalp tenderness, @entity158 on chewing, and @entity1018 . @entity221 , @entity448 , @entity353 , and night sweats may also be present. With TA, respiratory symptoms occur in 9% and are the presenting feature in 4%. @entity854 associated with TA include a highly elevated erythrocyte sedimentation rate, @entity417 , and @entity1148 , and mildly increased alkaline phosphatase/serum transaminases. @entity1 : We present a @entity1 with FUO caused by TA whose predominant presenting symptom was persistent cough that overshadowed head and neck symptoms of TA. To the best of our knowledge, this is the first case of TA presenting as an FUO, with a highly elevated serum ferritin level. RESULTS: We conclude that highly elevated serum ferritin levels in @entity1 with FUO should alert the clinician to consider TA in the differential diagnosis.
