Fever of unknown origin echocardiography and ultrasound

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Apart from laboratory work up investigations like echocardiography and ultrasound may be helpful in finding cause of FUO provided the diagnostic clues are present which makes these investigation essential.[1]


  1. Echocardiography should be performed when suspecting endocarditis. echocardiography in this case shows growths on heart valve leaflets.[2]
  2. Hepatobiliary pathology may be detected by abdominal ultrasonography.


  1. Cunha, Burke A. (2007). "Fever of Unknown Origin: Focused Diagnostic Approach Based on Clinical Clues from the History, Physical Examination, and Laboratory Tests". Infectious Disease Clinics of North America. 21 (4): 1137–1187. doi:10.1016/j.idc.2007.09.004. ISSN 0891-5520.
  2. McGregor, Alastair C; Moore, David A (2015). "Infectious causes of fever of unknown origin". Clinical Medicine. 15 (3): 285–287. doi:10.7861/clinmedicine.15-3-285. ISSN 1470-2118.

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