Lemierre syndrome: a rare complication of pharyngotonsillitis.

Introduction

Lemierre's syndrome consists of a pharyngeal infection associated with septicemia and internal jugular thrombosis with septic emboli. This condition was described in 1936 by Andre Lemierre.1, 2 It was initially named as post-anginal septicemia, and then, “forgotten disease”, by becoming a rare condition after the advent of antibiotics, with fewer than 100 cases reported since 1974. Lamierre's syndrome has also been named necrobacillosis, due to the presence of Fusobacterium necrophorum, a commensal bacteria from oral cavity which is considered the most common causative agent of the disease. Bacteroides, Streptococcus group B and C, Streptococcus oralis, Staphylococcus epidermitis, Enterococcus and Proteus mirabilis may also be involved.

The objective of this report is to present a Lemierre's-syndrome case treated at the Otorhinolaryngology Emergency Room.

Case presentation

Male patient, aged 18 years, presented initially with throat pain and left-side neck pain evolving with fever (37.8 °C). This patient had been treated with benzathine penicillin and symptomatic medication. On the 4th day, he began to experience pain in his knees and ankles.

At admission, the patient was in poor general condition, with paleness, dehydration, tachycardia (116 bpm), with 95% saturation in room air, hypotensive (108 × 57 mmHg) and afebrile (36.6 °C). The patient presented with hyperemic oropharyngeal examination, a left cervical bulging, hepatomegaly and bilateral edema and hyperemia in his ankles. The initial investigation showed thrombocytopenia (28,000/mm3), leukocytosis with a left shift (16,100/mm3), increased creatinine (3.5 mg/dL) and urea (243 mg/dL). The patient was treated according to the protocol for severe sepsis, including blood culture, vigorous hydration, IV ceftriaxone 2 g, and hospitalization.

At the investigation for other septic foci, a cervical ultrasound scan showed multiple lymph nodes with inflammatory reaction and thrombosis of upper and middle thirds of left internal jugular vein (Fig. 1A and B). An ultrasound of the lower limbs showed a small bilateral ankle joint effusion.

Figure 1

(A) Right cervical doppler ultrasound scan with normal vascular flow. (B) Flow absent in left internal jugular vein. (C) Computed tomography of chest; lung parenchyma showing multiple nodes. (D) Ground-glass appearance in lung bases.

During the 1st day of hospitalization, the patient exhibited progressive dyspnea, with tachypnea, suprasternal depression and stertor crackes on pulmonary auscultation. We considered that the sepsis had its origin in a pulmonary focus, requiring tracheal intubation. Thoracic CT scan showed pleural effusion and multiple nodules distributed through the lung parenchyma, with areas of a ground-glass pattern corresponding to septic emboli (Fig. 1C and D). After the introduction of piperacillin tazobactam, the patient's evolution was favorable, with improvement of the sepsis. The patient was discharged after 14 days of intravenous antibiotic therapy. Blood cultures showed no bacterial growth.

The initial finding of pharyngeal infection accompanied by sepsis, in combination with confirmation of jugular vein thrombosis and pulmonary septic emboli, validated the hypothesis of Lemierre's syndrome.

Discussion

Lemierre's syndrome occurs predominantly in young adults; one study reported higher prevalence in men, as occurred in this case. In most cases of this syndrome, a pharyngitis is noted before occurrence of systemic complications, similarly to what happened in our case; but the internal jugular thrombosis may result from other head and neck infections.5, 6 The incidence is estimated to be 3.6 cases per million inhabitants.

The septic emboli originating from the jugular thrombosis mainly affect lungs and joints, exactly the affected foci in the current report. The lung condition may involve severe chest pain, dyspnea and hemoptysis due to pulmonary abscesses. The joints as well may develop septic arthritis and osteomyelitis.

The treatment of this syndrome consists of support for the sepsis and antibiotic therapy, as was done in this case. Antibiotic therapy should be directed to anaerobes, staphylococci and streptococci. The main etiologic agent, F. necrophorum, is sensitive to penicillin, clindamycin and metronidazole. The blood culture of our patient showed no bacterial growth; but there is a question: whether the previous use of antibiotics or a failure in the collection procedures for anaerobic organisms may have had some influence on the negative bacterial growth outcome.

Final considerations

Lemierre's syndrome is a rare disease secondary to common otorhinolaryngological infections. The otorhinolaryngologist should be alert for signs of sepsis in common infectious conditions. A correct approach to sepsis is critical for obtaining good results in this syndrome.

Conflicts of interest

The authors declare no conflicts of interest.