Gastrointestinal Variant of Lemierre Syndrome: Fusobacterium nucleatum Bacteremia-Associated Hepatic Vein Thrombosis: a Case Report and Literature Review.

Fusobacterium nucleatum is a gram-negative bacillius commonly found in oropharynx and is traditionally associated with Lemierre syndrome, which is characterized by history of recent oropharyngeal infection, internal jugular vein thrombosis, and isolation of anaerobic pathogens, mainly Fuosobacterium necrophorum. However, recent evidence indicated that F. nucleatum is also a normal resident of human gut. Less than a dozen of case reports had linked F. nucleatum to gastrointestinal variant of Lemierre syndrome with portal vein thrombosis. However, F. nucleatum bacteremia-associated hepatic vein thrombosis is very rare. We report a case of a 73-year-old man who had hepatic vein thrombosis associated with F. nucleatum bacteremia, most likely from subclinical primary infection affecting the lower gastrointestinal tract. The underlying pathophysiology and treatment options are discussed here. With rapid increase in reporting of Lemierre syndrome, this case deserves particular attention from clinicians.

[Lemierre syndrome variant: Hepatic abscesses and hepatic venous thrombosis due to Fusobacterium nucleatum septicemia]. / Un variant du syndrome de Lemierre: abcès hépatiques et thrombose veineuse sus-hépatique secondaire à une septicémie à Fusobacterium nucleatum.

INTRODUCTION: Like Fusobacterium necrophorum, Fusobacterium nucleatum is capable causing Lemierre's syndrome. Various locations of venous thrombosis have been described associated with Fusobacterium sp. septicemia. EXEGESIS: We describe a 43-year old alcoholic patient with F.nucleatum septicemia complicated with hepatic abscesses, middle hepatic venous thrombosis, osteomyelitis and infiltrative pneumonia. A pancreatic prosthesis was the only potentially identified infectious entrance. CONCLUSION: Our patient showed an alternative presentation of Lemierre's syndrome, a "digestive variant". To the best of our knowledge, this is the first report of Fusobacterium septicemia associated with hepatic venous thrombosis. This report is close to the cases of portal thrombosis and opens the clinical sphere of the lemierre's syndrome, whose incidence is increasing.

Pileflebitis séptica criptogénica / Cryptogenic septic pylephlebitis

Introducción. La piliflebitis séptica con trombosis es un proceso infeccioso grave, poco frecuente en Pediatría, generalmente secundario a procesos inflamatorios abdominales y raramente criptogénico. Caso clínico. Se describe el caso de un paciente masculino de diez años de edad, que presentó dolor abdominal difuso, fiebre, vómito, hepatoesplenomegalia dolorosa a la palpación, leucocitosis con neutrofilia y bandemia. Se aislaron Bacteroides spp y Peptostreptococcus spp de hemocultivo y mielocultivo. Por estudios de ultrasonido abdominal, tomografía axial computada y resonancia magnética se diagnosticó trombosis portal y abcesos hepáticos piógenos. No se encontró foco infeccioso que pudiera ser catalogado como el sitio primario de infección que hubiese condicionado la complicación portal y hepática por lo que se consideró el proceso como criptogénico. Conclusiones. La pileflebitis séptica es una patología poco frecuente que debe ser considerada en el diagnóstico diferencial de absceso hepático y en los casos de hepato-esplenomegalia más fiebre en la etapa escolar