Retropharyngeal Abscess With Mediastinal Extension: A Case Series and Review of the Literature.

Deep neck infections are common in infants and occur in several anatomic subsites including the retropharyngeal space. Retropharyngeal abscesses are significant given their propensity for mediastinal extension and can have life-threatening sequelae. We present 3 cases of retropharyngeal abscess with mediastinal extension in infants. In one case, an incompletely vaccinated 10-month-old boy presented with cough, rhinorrhea, and fever. Despite antibiotic treatment, he developed Horner's syndrome and hypoxia. A computed tomography (CT) scan showed a C1-T7 retropharyngeal abscess. He underwent transoral incision and drainage and recovered fully. In another case, a 12-month old infant presented with 8 days of fever and neck pain. A CT scan showed a retropharyngeal collection extending to the mediastinum and right hemithorax. Transoral incision and drainage and video-assisted thoracoscopic surgery thoracotomy were performed for abscess drainage. He recovered fully with antibiotics. In the third case, an 8-month-old boy presented to the emergency room following several days of fever, lethargy, and decreased neck range of motion. A CT scan showed a large retropharyngeal abscess that required both transoral and transcervical drainage. His case was complicated by septic shock, yet the patient eventually made a full recovery.