Infective endocarditis was a cause that can not be ignored in patients
with clinical fever, which was often missed and misdiagnosed because of
the diversity of clinical manifestations. This paper reported a case of
infective endocarditis diagnosed by echocardiography and PET-CT due to
recurrent fever. The patient was an elderly woman with a history of 20
years of type 2 diabetes and 5 years of hypertension. The first symptom
was recurrent fever. After admission, the relevant examination did not
determine the cause, and later echocardiography found that the papillary
muscle vegetation was attached and diagnosed as infective endocarditis.