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Eikenella corrodens endocarditis and liver abscess in a previously healthy male, a case report.

Eikenella corrodens endocarditis and liver abscess in a previously healthy male, a case report.
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Nordholm AC, Vøgg ROB, Permin H, Katzenstein T,


Nordholm AC, Vøgg ROB, Permin H, Katzenstein T, (click to view)

Nordholm AC, Vøgg ROB, Permin H, Katzenstein T,

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BMC infectious diseases 2018 01 1218(1) 35 doi 10.1186/s12879-018-2949-4
Abstract
BACKGROUND
Eikenella corrodens is one of the HACEK bacteria constituting part of the normal flora of the oropharynx, however, still an uncommon pathogen. We report a case of a large Eikenella corrodens liver abscess with simultaneously endocarditis in a previously healthy male.

CASE PRESENTATION
A 49-year-old Danish man was admitted because of one-month malaise, fever, cough and unintentional weight loss. On admission there was elevated white blood cell count and C-reactive protein, as well as affected liver function tests. Initially pneumonia was suspected, but due to lack of improvement on pneumonia treatment, a PET-CT scan was performed, which showed a large multiloculated abscess in the liver. The abscess was drained using ultrasound guidance. Culture demonstrated Eikenella corrodens. Transesophageal echocardiography revealed aortic endocarditis. The patient was treated with antibiotics and abscess drainage, on which he slowly improved. He was discharged after 1.5 months of hospitalisation. On follow-up 2 months later, the patient was asymptomatic with normalized biochemistry and ultrasound showed complete regression of the abscess.

CONCLUSIONS
This is the first case of documented Eikenella corrodens concurrent liver abscess and endocarditis. The case report highlights that Eikenella corrodens should be considered as a cause of liver abscess. Empirical treatment of pyogenic liver abscess will most often cover Eikenella corrodens, but the recommended treatment is a third generation cephalosporin or a fluoroquinolon. A multiloculated liver abscess may require drainage several times during treatment. The finding of Eikenella corrodens should elicit an echocardiography to diagnose endocarditis even in patients without clinical signs of endocarditis.

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