Lemierre’s syndrome in pediatric population

Introduction: Lemierre’s syndrome is a rare, potentially fatal complication of upper respiratory tract infections, occurring mainly in young, previously healthy individuals. It is defined as postanginal septicaemia accompanied by thrombosis of the internal jugular vein and formation of abscesses in distant organs. Characteristic symptoms include deterioration of patient’s condition on the 4th–7th day of the management of primary infection, with the recurrence of fever and unilateral swelling and painfulness of the neck. Aims: The analysis of pediatric cases of Lemierre’s syndrome as described in the literature over the last 30 years; presentation of own experience and clinical observations in pediatric patients receiving treatment for Lemierre’s syndrome. Material and methods: A search of the literature available through the PubMed platform was carried out using the query terms “Lemierre syndrome” and “children”. A total of 73 pediatric cases reported on in papers published in English literature within the time span of 1980 through 2023 were included in the analysis. Results: As shown by the analysis of the 73 pediatric cases of Lemierre’s syndrome, the most common causes of the disease were acute pharyngitis and acute otitis media. The presence of the bacterial species Fusobacterium necrophorum was established in the blood cultures of more than one half of the patient group. Distant complications were most frequently observed in the lungs while the most common locations of thrombosis included the internal jugular vein and the sigmoid sinus. Intravenous antibiotic therapy was delivered to all patients, many of whom required additional surgical intervention and/or anticoagulation treatment. Conclusions: In most cases, Lemierre’s syndrome is a complication of acute pharyngitis and acute otitis media. Despite the presence of severe distant organ complications and extensive thrombotic lesions within the venous vessels, complete recovery is achieved in most cases in the pediatric population. The treatment of Lemierre’s syndrome is based primarily on broad-spectrum antibiotic therapy, with surgical interventions and/or anticoagulant therapy being also required in some cases. As of the present, no uniform guidelines have been established for the use of anticoagulant therapy, particularly in the pediatric population.