A Case of Profound Obstructive Sleep Apnea Secondary to an Unrecognized Lingual Angiomyxoma.

A 44-year-old woman presented to the emergency department status post incidental discovery of a large lingual mass identified during workup of a known intracranial neoplasm. The patient presented with a 4-month history of progressive altered mental status, somnolence, aphasia, and dysphagia; symptomology was attributed to the suprasellar tumor. Metastatic disease to the oral cavity was the primary differential diagnosis. Imaging demonstrated a 5.5 × 5.5 cm posterior tongue mass with near complete pharynx obstruction. Prompt debulking and pathology workup occurred. On postoperative day 1, the patient experienced complete resolution of all symptoms. Given rapid improvement, neurological decline was ultimately attributed not to the suprasellar mass but instead as being secondary to profound obstructive sleep apnea and ensuing sleep deprivation caused by the lingual tumor. This case describes the rare finding of a massive lingual superficial angiomyxoma with a synchronous cerebral neoplasm in which the latter functioned as a diagnostic distraction.

Predictors of Intraoperative Difficulty and Postoperative Examination Abnormalities in 164 Orbital Operations.

BACKGROUND: Although orbital fractures are common, prediction of outcomes in orbital surgery can be quite challenging. PURPOSE: We aim to identify predictors of intraoperative difficulty, operating time, and postoperative examination abnormalities in subjects undergoing post-traumatic orbital reconstructions. STUDY DESIGN, SETTING, AND SAMPLE: This is a retrospective cohort study of all consecutive orbital operations performed at a private, Level 1 trauma center in Portland, Oregon, USA over an 82-month period. All subjects that underwent exploration of the internal orbit for traumatic indications during the study period were included in the cohort. PREDICTOR VARIABLES: Four plating styles, surgical approach (transorbital vs transantral), days from injury to first surgery, fracture size (approximated as a rectangle using linear measurements from computed tomography scans), anteroposterior fracture position, and medial wall involvement were examined. OUTCOME VARIABLES: The primary outcome variable was intraoperative difficulty (defined as requiring revision after intraoperative imaging or return to the operating room). Secondary outcome variables included operating time and postoperative examination abnormalities. COVARIATES: Age and sex were included. ANALYSES: χ2 and Regression analyses were performed using a significance level of P < .05. RESULTS: One hundred and sixty four orbital operations were performed (90 isolated injuries and 74 combined orbital/midface injuries) on 155 subjects (73% male, mean age 39.8 years, standard deviation 16.7). In subjects with isolated orbital fractures, medial wall involvement was associated with intraoperative difficulty (P = .01). When using a transantral approach, intraoperative difficulty was more likely in more anterior fractures (P = .02). Plating style was associated with operating time (P = .03), with median times from 81 to 105 minutes (range 21 to 248 minutes). Postoperative examination abnormalities were more likely in the transorbital approach group (P = .01). Neither days to first surgery nor intraoperative difficulty were associated with postoperative examination abnormalities. Postoperative eyelid changes were seen in 13.6% of transorbital approaches and 0% of transantral approaches. Correction of gaze restriction and enophthalmos were more likely than correction of diplopia (P < .01). CONCLUSIONS AND RELEVANCE: Medial wall involvement is associated with intraoperative difficulty in orbital surgery. Anteriorly positioned fractures are better treated transorbitally, while posterior fractures may be amenable to transantral repair, thus avoiding risk of lower eyelid changes.

Updates in Management of Craniomaxillofacial Gunshot Wounds and Reconstruction of the Mandible.

This article includes updates in the management of mandibular trauma and reconstruction as they relate to maxillomandibular fixation screws, custom hardware, virtual surgical planning, and protocols for use of computer-aided surgery and navigation when managing composite defects from gunshot injuries to the face.

Management of Zygomaticomaxillary Complex Fractures Utilizing Intraoperative 3-Dimensional Imaging: The ZYGOMAS Protocol.

PURPOSE: Utilization of technology to aid in the assessment, planning, and management of complex craniomaxillofacial injuries is increasingly common. Limited data exist regarding the implication of intraoperative CT/3-Dimensional imaging on decision making in the management of zygomaticomaxillary complex (ZMC) fractures. This study characterizes the utilization of the intraoperative CT scanner for ZMC fracture surgery and analyzes the impact of the intraoperative CT scanner on fracture management. Using these findings, we sought to propose an algorithm to guide the appropriate utilization of intraoperative 3-Dimensional imaging in ZMC fracture surgery. METHODS: This retrospective case series evaluates the use of the intraoperative CT scanner for orbitozygomatic trauma surgery at a level 1 trauma center from February 2011 to September 2016. We evaluated the preoperative CT images assessing for the number of displaced sutures, the presence of adjacent fractures requiring fixation, the presence of comminution of the zygomaticomaxillary buttress or body of the zygoma, as well as the number of axes displaced ≥ 5 mm. This information was evaluated to provide guidance on the appropriate utilization of the intraoperative scanner in ZMC fracture management. RESULTS: A total of 71 patients were identified to have intraoperative facial CT scans and surgery for ZMC fractures over the study time period. There was a 23.9% (17/71) CT directed revision rate. There was a significantly increased likelihood of CT directed revision for fractures with adjacent fractures requiring fixation, and those with ≥ 2 axes displaced ≥ 5 mm. Using these findings, we proposed the ZYGOMAS algorithm outlining the indications for use of intraoperative CT in management of ZMC fractures. CONCLUSIONS: If available, intraoperative CT/3-Dimensional imaging should be utilized in the management of ZMC fractures with the requirement for orbital floor reconstruction, where adjacent fractures require fixation and/or when ≥ 2 axes are displaced ≥ 5 mm.

Orbital Volume Correction in Orbital Floor Fractures: A Comparison of Transorbital and Transantral Techniques.

PURPOSE: We compared the accuracy of orbital volume correction between the transorbital and transantral reconstructive techniques. MATERIALS AND METHODS: A retrospective cohort study was performed of patients who had undergone repair of isolated, unilateral orbital floor blowout fractures at Legacy Emanuel Hospital from 2013 to 2018. A total of 21 patients were identified and included in the predictor variable cohorts of the transorbital versus transantral repair technique. The outcome variable of orbital volume correction was evaluated by comparing the volume of the postoperative repaired orbits with that of the contralateral noninjured orbits. Additional ordinal variables analyzed included the preoperative orbital defect size and analysis of the transantral cohort stratified by the plating technique used. Data were assessed using analysis of variance and paired t tests. RESULTS: A transantral approach was used for orbital repair in 9 patients. In these patients, the postoperative orbital volume in the injured orbit was 2.69% greater than that in the uninjured orbit. The 12 patients who had undergone transantral repair had a postoperative orbital volume in the injured orbit that was 0.56% smaller than that of the uninjured orbit (P = .033). Division of the transantral cohort into 2 different plating techniques identified a less than 1% difference in mean orbital volume correction between the 2 techniques (P = .104). The average defect volume before transorbital repair was 4.87 cm3 compared with 5.22 cm3 for transantral repair (P = .907). CONCLUSIONS: The results from the present study have shown that the accuracy of orbital volume correction using the transantral approach will be comparable to that of the transorbital approach, as shown by a small, but statistically significant, increased accuracy in the volume correction with the transantral approach. Additional investigation to establish clinical correlations with these findings should be conducted.

Four Practical Reconstructive Techniques Using the Transantral Approach to the Orbital Floor Without the Need for an Endoscope.

Fractures of the orbital floor have traditionally been treated through transorbital approaches. Transconjunctival approaches risk entropion, whereas transcutaneous approaches risk ectropion or hypertrophic scarring. The intraoral transantral approach to the orbital floor has the advantage of minimizing the risk of any eyelid changes while providing appropriate access to reduce the herniated orbital contents and restore orbital volume. This article describes 4 plating methods for reconstructing a fractured orbital floor using a transantral approach. Many prior descriptions of transantral treatment of the orbital floor have relied heavily on the use of an endoscope. This article describes an osteotomy technique that does not require an endoscope but requires only a high-quality headlight for visualization.

Infection prevalence and patterns in self-inflicted gunshot wounds to the face.

OBJECTIVE: Self-inflicted gunshot wounds (SIGSWs) to the craniomaxillofacial region are uncommon injuries but are associated with a high mortality rate. Therefore, treating these patients is a rare occurrence even in the largest trauma centers. As with many rare conditions, data specifically addressing this injury pattern are scarce. Because of the proximity of the blast, even low-velocity injuries can be associated with significant avulsion of tissue, comminution of structures, and tissue die back. Previous case reports have recommended the use of prophylactic antibiotics, but no study has specifically investigated the postinjury infection rate or microbial patterns in this patient population. The purpose of this study was to answer the following clinical question: "Among patients with SIGW to the maxillofacial region, what is the prevalence of postinjury infection, and are there any microbial patterns that can guide empiric antibiotic selection?" STUDY DESIGN: We designed retrospective cohort study at a level I trauma center in Portland, Oregon. Data on 17 patients who had sustained a SIGSW involving the maxilla or the mandible and survived their initial injury were collected from 2010 to 2017. RESULTS: Patients who had a culture-positive infection within 30 days of their injury were defined to have a postinjury infection. Six of the 17 patients (35%) developed a postinjury infection, with an average time to infection of 11 days from initial injury (range 3-19 days). Of the 17 subjects, 15 (88%) received a course of prophylactic antibiotics, on average, for 14 days (range 3-24 days). Of the 6 cases of postinjury infection, culture grew gram-negative bacteria in 4 cases-anaerobic bacteria in 2 and polymicrobial organisms in 2. There was no clear pattern or prevalence of any specific bacterium, but cultures notably included Staphylococcus aureus, Enterobacter species, Bacteroides species, and Escherichia coli. CONCLUSIONS: SIGSWs are associated with a high rate of postinjury infection (35%) despite prophylactic antibiotic usage in 88% of these cases. Given the antimicrobial patterns observed in this study, prophylactic antibiotics in this patient population should include empiric coverage for gram-negative and anaerobic bacteria.

Use of Intraoperative Computed Tomography in Craniomaxillofacial Trauma Surgery.

PURPOSE: The use of technology to aid in assessment, planning, and management of complex craniomaxillofacial injuries is increasingly common. Preoperative computed tomography (CT) evaluation is considered the standard of care, and intraoperative imaging is becoming increasingly accessible. Limited data exist regarding the implication of intraoperative CT on decision making in the management of all sites of facial fractures. The purposes of this study were to characterize the use of an intraoperative CT scanner for craniomaxillofacial surgery within our institution, to quantify the effect of intraoperative CT on surgical decision making, and to attempt to provide guidance on when to use this technology. PATIENTS AND METHODS: This retrospective case series characterizes the use of an intraoperative CT scanner for craniomaxillofacial trauma surgery at a level 1 trauma center in Portland, Oregon, from February 2011 to September 2016. We evaluated the following variables: the number of intraoperative CT scans performed for craniomaxillofacial surgery including the number of scans for each patient, the number of scans for each operative visit, the CT-directed revision rate (overall and for specific preoperative diagnoses), and the indication for imaging. This information was evaluated to provide guidance on appropriate use of an intraoperative scanner. RESULTS: A total of 161 patients were identified to have intraoperative facial CT scans from February 2011 to September 20, 2016, at Legacy Emanuel Medical Center. A total of 212 intraoperative facial CT scans were performed across 168 separate operations. The overall CT-directed revision rate was 28%. CT-directed revision rates for fracture subsites are as follows: orbital, 31%; zygomaticomaxillary complex, 24%; Le Fort I, 8%; Le Fort II and III, 23%; naso-orbital-ethmoidal, 23%; mandible, 13%; and frontal sinus, 0%. No CT-directed revisions were performed during removal of hardware, during placement of craniofacial implants, or in temporomandibular joint replacement surgery. CONCLUSIONS: If available, intraoperative CT should be routinely considered in the operative management of orbital fractures and pan-facial fractures, as well as complex zygomaticomaxillary complex, Le Fort II and III, and naso-orbital-ethmoidal fractures. Consideration also should be given to the use of intraoperative CT in cases of complex mandible fractures involving severe comminution or the condylar region. Intraoperative CT should not be routinely used for the management of Le Fort I fractures or frontal sinus fractures.

Recommendations for Care of Geriatric Maxillofacial Trauma Patients Following a Retrospective 10-Year Multicenter Review.

PURPOSE: The purpose of this study was to analyze maxillofacial trauma sustained by patients at least 75 years old. With the injury patterns identified, treatment recommendations for the contemporary oral and maxillofacial surgeon are made. PATIENTS AND METHODS: This study was a retrospective case series using data from 2 level 1 trauma centers. The variables of interest included age at traumatic event, gender, mechanism of trauma, concomitant injuries, radiographic studies performed, management of maxillofacial injuries, and disposition. Numerical analysis was completed with statistical software. RESULTS: One hundred seventy-six patients at least 75 years old who sustained facial trauma were identified. Ground-level falls caused most cases of maxillofacial trauma in the geriatric population. The median age at the time of trauma was 83 and 85 years for men and women, respectively. The most common injuries were midface fractures. Intracranial hemorrhage was the most common concomitant injury, and all but 1 patient underwent computed tomography of at least the head after their traumatic event. Most maxillofacial injuries were treated without operative repair. CONCLUSIONS: The information gained from this study suggests that oral and maxillofacial surgeons should counsel geriatric patients on the risk of falls and encourage the prevention of potential hazards for falls in their homes.

Functional Anatomic Computer Engineered Surgery Protocol for the Management of Self-Inflicted Gunshot Wounds to the Maxillofacial Skeleton.

PURPOSE: Virtual surgical planning (VSP) is an indispensable aid in craniomaxillofacial reconstruction, yet no protocol is established in facial gunshot wounds. We review our experience with computer-aided reconstruction of self-inflicted facial gunshot wounds (SIGSW'S) and propose a protocol for the staged repair. METHODS: A retrospective case series enrolling patients with SIGSW's managed with the Functional Anatomic Computer Engineered Surgical protocol (FACES) was implemented. Subjects were evaluated at least one month postoperatively. Outcome variables were jaw position, facial projection, oro-nasal communication, lip competence, feeding tube and tracheostomy dependence, descriptive statistics were computed. The FACES protocol implemented during the initial hospitalization is as follows 1) damage control; 2) selective debridement; 3) VSP reconstruction back converted into navigation software 4) navigation assisted midfacial skeletal reconstruction; 5) computer aided oro-mandibular reconstruction with or without microvascular free flaps using custom cutting guides/hardware; 6) navigation assisted, computer aided palatomaxillary reconstruction with or without microvascular free flaps using cutting guides/hardware; 7) navigation assisted reconstruction of the internal orbit; 8) and confirmation of accurate reconstruction using intraoperative CT. RESULTS: The sample was composed of 10 patients, mean age of 43 years (range, 28 - 62 years, 70% M), 100% with SIGSW's to the submental/submandibular region. All had satisfactory facial projection (n=10), nine had satisfactory jaw position, were decannulated by one month's follow up and were feeding tube independent (90%). All traumatic oro-antral communications were closed (n=8, 7 surgical, 1 obturator), seven had adequate lip competence (70%). Complications included fibula malunion (n=1), plate exposure (n=2) infection (n=2), intracranial abscess (n=1) and microstomia (n=2). CONCLUSION: Computer-aided surgery is an indispensable tool in the reconstruction of SIGSW's. Successfully implemented, it proved to be a useful adjunct for: the restoration of orbital volume, facial projection and symmetry; the inset of composite tissue, and the facilitation of dental implant supported prosthetic rehabilitation.

Updates in Management of Craniomaxillofacial Gunshot Wounds and Reconstruction of the Mandible.

This article includes updates in the management of mandibular trauma and reconstruction as they relate to maxillomandibular fixation screws, custom hardware, virtual surgical planning, and protocols for use of computer-aided surgery and navigation when managing composite defects from gunshot injuries to the face.