Pharyngeal actinomycosis: a case report.

Actinomycetes are saprophytic bacteria of the oral cavity. They can produce a rare, chronic, and suppurative process that usually originates from the teeth and mandible and then involve the cervical region, especially in the sub-mandibular area. A case of actinomycosis occurring in the retropharyngeal space in a 74 year-old man is reported. It arose as a swelling behind the third lower left molar that had no lesion. The patient was treated successfully with antibiotic therapy. The clinical presentation and management of the case are discussed and the relevant literature is reviewed.