A 40-year-old woman visited our emergency room (ER) with fever and shaking chills. Blood cultures for suspicion of urinary tract infection revealed bacteremia two days later. Since Streptococcus mitis was detected, infective endocarditis was strongly suspected. In addition to her history of dental calculus removal, careful cardiac auscultation revealed a continuous murmur, leading to the existence of patent ductus arteriosus (PDA). PDA was confirmed by echocardiography and 3D-CT angiography. The patient was successfully treated by antibiotics and then received transcatheter PDA closure. Careful auscultation after detection of bacteremia led to a diagnosis of PDA.

Here we present a case of hemorrhagic lumbar facet cyst presenting with progressive radiculopathy only on the contralateral side. If a patient has previous back pain or neuropathy for several months and then suddenly deteriorates, hemorrhagic facet cyst of the lumbar spine should be part of the differential diagnosis. However, as in the present case, we should be aware that there is a possibility of a contralateral lesion.
Back Pain ; Diagnosis, Differential ; Hematoma ; Humans ; Leg ; Radiculopathy ; Spine ; Zygapophyseal Joint