RESUMEN
Objectives: Pneumomediastinum (PM) secondary to oromaxillofacial trauma (OMF) is a rare but well-described complication/pathologic finding. The aim of this study was twofold: first, to report our experience in treatment of maxillofacial trauma patients with PM, and second, to review the literature regarding the clinical features, severity, course, and management of the aforementioned complication. Material and methods: We retrospectively reviewed the medical records and charts of patients who suffered from maxillofacial trauma and treated in our hospital between September 1, 2013 and September 31, 2017. The inclusion criteria were patients with radiologically confirmed PM. In addition, the electronic databases PubMed, Scopus, and Science Direct were queried for articles reporting PM cases secondary to OMF injuries and published in English, French, and German language. Results: Three cases of PM out of 3,514 cases of craniomaxillofacial trauma were found; there were 3 male patients who presented in our emergency department with the chief complaint of cervicofacial swelling. Literature search isolated 58 selected articles and 63 cases were assessed in total; posttraumatic repeated blowing of nose was proved as most frequent triggering factor among them. Furthermore, the outcomes of review showed that thoracic pain, respiratory distress, and swallowing difficulties were not frequently reported in patients with ME due to facial trauma. Conclusions: Both our experience and the results of systematic literature review indicated that patients with PM due to OMF injuries present mild clinical course. If properly managed, this specific pathologic condition may have no further complications or relative comorbidities. The exact etiology and mechanism of PM in the context of maxillofacial injuries always needs to be identified. Radiographic, laboratory, and endoscopic examinations should be applied to rule out the more serious and frequently diagnosed aerodigestive, thoracic, and abdominal causes of PM.
RESUMEN
OBJECTIVE: The aims of this paper are to demonstrate two cases of implant migration into the maxillary sinus and to give a short review of the literature on this subject. CLINICAL PROCEDURE: Two patients were diagnosed with implant migration into the maxillary sinus. After thorough radiographic examination which revealed the exact position of the implants inside the maxillary sinus, removal was performed through a bony window in the anterior-lateral aspect of the maxillary sinus for both cases. DISCUSSION: Implant displacement into the maxillary sinus can occur intraoperatively or postoperatively either prior to implant loading or after functional loading. Several actors can lead to this complication differing according to the stage of the displacement. Management of this complication is achieved using four surgical techniques: a. Functional endoscopic sinus surgery, b. intraoral removal by the Caldwell-Luc technique, c. removal through the alveolar bone, d. combination of the last two techniques. If implant displacement into the maxillary sinus remains untreated, it can lead to several complications with various effects. CONCLUSION: Migration of dental implants into the maxillary sinus is a rare but severe complication which must be treated as soon as possible.
RESUMEN
Pneumomediastinum (PM) implies an abnormal condition where a collection of free air or gas is entrapped within the fascial planes of mediastinal cavity. It is considered as benign entity, but an uncommonly seen complication of craniofacial injuries. We report a case of a 63-year-old male patient with the presenting sign of closed rhinolalia who was diagnosed with retropharyngeal emphysema and PM due to a linear and nondisplaced fracture of midface. The patient cited multiple efforts of intense nasal blowing shortly after a facial injury by virtue of a motorcycle accident. He was admitted in our clinic for closer observation and further treatment. The use of a face mask for continuous positive airway pressure was temporarily interrupted, and high concentrations of oxygen were delivered via non-rebreather mask. Patient's course was uncomplicated and he was discharged few days later, with almost complete resolution of cervicofacial emphysema and absence of residual PM in follow-up imaging tests. Closed rhinolalia (or any acute alteration of voice) in maxillofacial trauma patients should be recognized, assessed, and considered within the algorithm for PM and retropharyngeal emphysema diagnosis and management. For every single case of cervicofacial emphysema secondary to facial injury, clinicians should maintain suspicion for retropharyngeal emphysema or PM development.
