Resumo (EN)
Ludwig's angina is a cellulitis often caused by an odontogenic infection classically located in the lower second and third molars, which involves the submandibular, sublingual and submentonian spaces. The typical symptoms include pain, increase in cervical volume, dysphagia, odinophagia, trismus, mouth floor edemas, tongue protrusion, fever, chills and lymphadenopathy. Image methods are used to determine the severity of infection. Plan conventional radiographies are usefull for initial evaluation. Examinations by computed tomography and magnetic resonance images indicate the extension of the lesion, commitment of the air space and gases interlocking muscular tissues. Treatment concentrated in maintenance air space, incision and drainage, antibiotic therapy and disposal of causal factor. A case is presented, containing clinical and imaginological characteristics. The diagnosis based on clinical examination and imaginological allies to effective medication and early surgery are crucial for maintaining the life of the patient.