Conclusion
Vertebral osteomyelitis in the presence of persistent or recurrent
bacteremia warrants screening for active infective endocarditis. This
case report documents an embryological remnant of the inferior vena
cava, known as the eustachian valve, as a source of infective
endocarditis in the setting of vertebral osteomyelitis. While this
constellation of comorbidities is rare, this case underlines the
importance of a thorough evaluation and persistent monitoring in the
treatment of such persistent infectious conditions.