Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 19 de 19
Filtrar
Mais filtros

Base de dados
País/Região como assunto
Tipo de documento
Intervalo de ano de publicação
1.
Am J Otolaryngol ; 44(6): 103963, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37406412

RESUMO

INTRODUCTION: Mandibular resection and reconstruction are common but complex procedures in head and neck surgery. Resection with adequate margins is critical to the success of the procedure but technical training is restricted to real case experience. Here we describe our experience in the development and evaluation of a mandibular resection and reconstruction simulation module. METHODS: 3D printed (3DP) models of a mandible with a pathologic lesion were developed from imaging data from a patient with an ameloblastoma. During an educational conference, otolaryngology trainees participated in a simulation in which they reviewed a CT scan of the pathologic mandible and then planned their osteotomies before and after handling a 3DP model demonstrating the lesion. The adequacy of the osteotomy margins was assessed and components of the simulation were rated by participants with pre- and post-training surveys. RESULTS: 52 participants met criteria. After reviewing the CT scan, 34 participants (65.3 %) proposed osteotomies clear of the lesion. This proportion improved to 48 (92.3 %, p = 0.001) after handling the 3D model. Among those with initially adequate margins (n = 33), 45.5 % decreased their margins closer to the ideal, 27.2 % made no revision, 21.2 % widened their margins. 92 % of participants found the simulation beneficial for surgical planning and technical training. After the exercise, the majority of participants had increased confidence in conceptualizing the boundaries of the lesion (69.2 %) and their abilities to ablate (76.5 %). CONCLUSIONS: The structured mandibulectomy simulation using 3DP models was useful in the development of trainee experience in segmental mandible resection. LAY SUMMARY: This study presents the first mandibulectomy simulation module for trainees with the use of 3DP models. The use of a 3DP model was also shown to improve the quality of surgical training.


Assuntos
Reconstrução Mandibular , Procedimentos de Cirurgia Plástica , Humanos , Osteotomia Mandibular , Mandíbula/diagnóstico por imagem , Mandíbula/cirurgia , Osteotomia/métodos
2.
Am J Otolaryngol ; 43(1): 103175, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-34418824

RESUMO

OBJECTIVES: To determine the rate of gastrostomy tube dependence after transoral robotic surgery (TORS), and to determine which patient or surgical factors increase the likelihood of gastrostomy tube dependence. METHODS: Retrospective chart review of all patients who underwent TORS for oropharyngeal squamous cell carcinoma (OPSCC) at a single institution from January 2011 through July 2016. Patients who underwent TORS for recurrent OPSCC were excluded. Primary outcome was gastrostomy tube (g-tube) dependence. Univariable and multivariable logistic regression were performed to identify risk factors for g-tube dependence at 3-months and 1-year. RESULTS: A total of 231 patients underwent TORS during the study period. At 3-month follow-up, 58/226 patients (25.7%) required g-tube. At 1-year and 2-year follow-up, 8/203 (3.9%) and 5/176 (2.8%), remained dependent on g-tube, respectively. Advanced T stage (T3) (OR = 6.07; 95% CI, 1.28-28.9) and discharge from the hospital with enteral access (OR = 7.50; 95% CI, 1.37-41.1) were independently associated with increased risk of postoperative gastrostomy tube dependence at 1 year on multivariable analysis. CONCLUSIONS: Long-term gastrostomy tube dependence following TORS is rare, particularly in patients that receive surgery alone. Patients with advanced T stage tumors have poorer functional outcomes. Early functional outcomes, as early as discharge from the hospital, are a strong predictor for long-term functional outcomes.


Assuntos
Dependência Psicológica , Gastrostomia/métodos , Gastrostomia/psicologia , Intubação Gastrointestinal/métodos , Intubação Gastrointestinal/psicologia , Procedimentos Cirúrgicos Bucais/métodos , Neoplasias Orofaríngeas/psicologia , Neoplasias Orofaríngeas/cirurgia , Procedimentos Cirúrgicos Robóticos/métodos , Carcinoma de Células Escamosas de Cabeça e Pescoço/psicologia , Carcinoma de Células Escamosas de Cabeça e Pescoço/cirurgia , Adulto , Idoso , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Neoplasias Orofaríngeas/patologia , Período Pós-Operatório , Fatores de Risco , Carcinoma de Células Escamosas de Cabeça e Pescoço/patologia , Fatores de Tempo , Resultado do Tratamento
3.
Cancer ; 126(9): 1873-1887, 2020 01 01.
Artigo em Inglês | MEDLINE | ID: mdl-32032441

RESUMO

BACKGROUND: When treated nonsurgically with definitive chemoradiation, smokers with human papillomavirus (HPV)-positive oropharyngeal squamous cell carcinoma (OPSCC) have a worse prognosis compared with their nonsmoking counterparts. To the authors' knowledge, the prognostic significance of smoking in surgically treated patients is unknown. METHODS: The current study is a retrospective case series of patients with HPV-positive OPSCC who underwent upfront transoral robotic surgery at a single institution from 2010 through 2017. Exclusion criteria were nonoropharyngeal primary tumors, histology other than SCC, HPV-negative tumors, previous history of head and neck cancer, and/or previous head and neck radiotherapy. Recurrence-free survival (RFS), overall survival, and disease-specific survival were compared using the Kaplan-Meier method and the log-rank test. Smoking history was categorized as never smokers (<1 pack-year), current smokers (smoking at the time of the cancer diagnosis), and former smokers. RESULTS: A total of 258 patients met the study criteria. The average age was 60 years, and approximately 87% of patients were male. A total of 148 patients (57.4%) were smokers whereas 110 (42.6%) reported never smoking. There were 44 active smokers (17.1%) and 104 former smokers (40.3%). The median follow-up was 3.23 years. There were 17 patients of disease recurrence. Smoking pack-year history was not found to be significant for RFS (hazard ratio, 1.01; 95% CI, 0.99-1.03 [P = .45]). There was no significant difference in RFS noted between never and ever smokers (92% vs 89.8%; P = .85) nor was there a difference observed between never, former, and current smokers (92% vs 91.5% vs 86.1%, respectively; P = .69). CONCLUSIONS: A smoking history is common in patients with HPV-positive OPSCC. In the current study, HPV-positive smokers were found to have excellent survival and locoregional control, similar to their nonsmoking counterparts. The results of the current study do not support the exclusion of smokers with early-stage, HPV-positive OPSCC from transoral robotic surgery-based deintensification trials.


Assuntos
Procedimentos Cirúrgicos Bucais/instrumentação , Neoplasias Orofaríngeas/virologia , Infecções por Papillomavirus/cirurgia , Fumar/epidemiologia , Idoso , Inibidor p16 de Quinase Dependente de Ciclina/metabolismo , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Neoplasias Orofaríngeas/cirurgia , Estudos Retrospectivos , Procedimentos Cirúrgicos Robóticos/efeitos adversos , Análise de Sobrevida
4.
J Oral Maxillofac Surg ; 78(10): 1870.e1-1870.e6, 2020 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-32619462

RESUMO

SMARCB1 (integrase interactor 1) is a tumor suppressor gene encoded on chromosome 22q11.2 that encodes a core subunit of SWI/SNF chromatin remodeling complexes and plays a critical role in regulating gene expression and chromatin structure. We describe a case of SMARCB1 (integrase interactor 1)-deficient sinonasal carcinoma of the left maxillary sinus in a 63-year-old woman with an initial presentation of numbness of the maxillary teeth and facial swelling.


Assuntos
Carcinoma , Neoplasias dos Seios Paranasais , Biomarcadores Tumorais , Feminino , Humanos , Integrases , Seio Maxilar , Pessoa de Meia-Idade , Neoplasias dos Seios Paranasais/diagnóstico por imagem , Neoplasias dos Seios Paranasais/genética , Proteína SMARCB1
5.
Am J Otolaryngol ; 40(5): 691-695, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-31227259

RESUMO

OBJECTIVE: To determine how current temporomandibular joint (TMJ) reconstruction methods affect functional outcomes. METHODS: Retrospective review from January 2006 to July 2017 at a single tertiary care center. All patients who underwent mandibulectomy with subsequent reconstruction with vascularized free tissue were included in the study. Condylar segments were reconstructed with vascularized free tissue flap in conjunction with autologous tissue or allograft in the joint space. Preoperative, 3 month, 1 year, and 2 year postoperative records were assessed for trismus, need for tube feeds, and Functional Oral Intake Scale (FOIS). RESULTS: Joint space was reconstructed with autologous tissue (n = 10), allograft (n = 15) or both (n = 9). At three months, FOIS scores significantly decreased from 5.4 preoperatively to 4.8 post operatively (P = .024) and need for tube feeds significantly increased from 15.8% preoperatively to 35.1% (P ≤0.027). Trismus significantly decreased from 63.2% to 27% (P = .006). At one-year, there were no significant changes in functional status compared to pre-operative state. Patients who had previous RT had significantly worse FOIS scores preoperatively (p = .002), at three months (p < .001), one year (p < .001), and two years (p = .008). There was no significant difference in postoperative functional status of patients based on the method of TMJ reconstruction. CONCLUSION: Reconstruction of the TMJ with vascularized free tissue is a viable option and yields acceptable long-term outcomes. While functional status may improve or worsen in the immediate postoperative period, long term results mirror preoperative function. Preoperative trismus will likely improve. LEVEL OF EVIDENCE: Level 3; Retrospective Comparative Study.


Assuntos
Transplante Ósseo/métodos , Osteotomia Mandibular/métodos , Neoplasias Bucais/cirurgia , Procedimentos de Cirurgia Plástica/métodos , Retalhos Cirúrgicos/transplante , Articulação Temporomandibular/cirurgia , Adulto , Idoso , Estudos de Coortes , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Neoplasias Bucais/patologia , Recuperação de Função Fisiológica , Estudos Retrospectivos , Medição de Risco , Estatísticas não Paramétricas , Centros de Atenção Terciária , Resultado do Tratamento
6.
Head Neck ; 46(8): 1902-1912, 2024 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-38294050

RESUMO

BACKGROUND: Medication related osteonecrosis of the jaw (MRONJ) requiring free flap (FF) reconstruction is uncommon with limited reported findings. METHODS: Multicenter, retrospective case series of 49 consecutive adult patients presenting with advanced MRONJ requiring FF reconstruction from 2010 to 2022. Perioperative complications and outcomes were analyzed. RESULTS: Eighty-two percent (n = 40) of cases were of the mandible and 18% (n = 9) were of the maxilla. The mean follow-up was 15 months (±19.6). The majority of FF survived (96%, n = 47). FF reconstructions of the maxilla were more likely to require postoperative debridement (56%, 95% CI [27, 81%] vs. 15%, 95% CI [7, 25%], p = 0.008) or develop intraoral bone exposure (56%, 95% CI [27, 81%] vs. 18%, 95% CI [9, 27%], p = 0.02). Most patients (71%, n = 35) received preoperative antibiotics which was associated with a higher rate of FF survival (100% vs. 86%, 95% CI [60, 96%], p = 0.02) and fewer complications. CONCLUSIONS: Patients undergoing FF reconstruction for MRONJ do well with high rates of FF success. MRONJ of the maxilla have a higher rate of some complications. Preoperative antibiotics correlated with higher FF survival and fewer postoperative complications.


Assuntos
Osteonecrose da Arcada Osseodentária Associada a Difosfonatos , Retalhos de Tecido Biológico , Procedimentos de Cirurgia Plástica , Humanos , Masculino , Feminino , Estudos Retrospectivos , Pessoa de Meia-Idade , Idoso , Procedimentos de Cirurgia Plástica/métodos , Procedimentos de Cirurgia Plástica/efeitos adversos , Osteonecrose da Arcada Osseodentária Associada a Difosfonatos/cirurgia , Adulto , Resultado do Tratamento , Idoso de 80 Anos ou mais
7.
Laryngoscope ; 133(1): 105-108, 2023 01.
Artigo em Inglês | MEDLINE | ID: mdl-35848774

RESUMO

Nasopharyngeal tumors in the proximity of the internal carotid artery are often difficult to dissect. Here, we describe a combined transcervical and endoscopic endonasal approach that provides improved internal carotid artery protection and confident tumor resection. Laryngoscope, 133:105-108, 2023.


Assuntos
Neoplasias Nasofaríngeas , Humanos , Neoplasias Nasofaríngeas/cirurgia , Neoplasias Nasofaríngeas/patologia , Maxila/cirurgia , Artéria Carótida Interna , Recidiva Local de Neoplasia/patologia
8.
Facial Plast Surg Aesthet Med ; 25(3): 200-205, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-36648341

RESUMO

Background: Head and neck free flap survival relies on adequate tissue perfusion from the external carotid artery (ECA), and vessel length is inversely proportional to blood flow rate. Objective: Investigate whether distance from the ECA (as a proxy for pedicle vessel length) predicts flap survival or complications. Methods: Retrospective review of free flaps performed at three academic centers from 9/2006 to 8/2021. Flaps were categorized by distance from the ECA: orbit and above (zone 1), maxilla to parotid (zone 2), and mandible and below (zone 3). Secondary analysis assessed flap outcomes stratified by average historical pedicle length. Results: A total of 2,369 flaps were identified in zones 1 (n = 109), 2 (n = 1878), and 3 (n = 382). Rates of flap failure (4.9%) and perioperative complications (36.3%) did not differ by zone or pedicle length. Zone 3 flaps, most commonly located in the larynx and hypopharynx, had significantly higher rates of fistula and infection. Conversely, 30-day readmission rates were significantly lower in patients with zone 2 flaps (p < 0.001). Rates of all other complications did not differ significantly between zones. Conclusions: Proximity to mucosal anatomic sites was a more powerful predictor of free flap viability than pedicle length or ECA proximity.


Assuntos
Retalhos de Tecido Biológico , Neoplasias de Cabeça e Pescoço , Procedimentos de Cirurgia Plástica , Humanos , Neoplasias de Cabeça e Pescoço/cirurgia , Pescoço/cirurgia , Cabeça/cirurgia
9.
Ear Nose Throat J ; : 1455613221075775, 2022 Mar 07.
Artigo em Inglês | MEDLINE | ID: mdl-35254923

RESUMO

The reported donor site morbidity of the fibula free flap (FFF) is low; however, several uncommon complications have been reported with tibia fracture rarely being reported. We present a case of a pathological tibial fracture in the setting of chronic osteomyelitis after FFF. A 54-year-old female presented with a benign fibro-osseous lesion of the right mandible and was treated with mandibulectomy and reconstructed with a left FFF. Approximately 1 year following surgery, the patient presented to the emergency department. Imaging showed a pathological fracture of the distal third of the tibial shaft with persistent erythema and cellulitis of the lateral prior graft harvest site without signs of systemic infection. She was taken to the operating room for irrigation and debridement with culture and biopsy as well as external fixation of the tibial fracture. Intraoperative biopsy and culture demonstrated fracture site change with callus formation and negative culture. The patient was discharged on 6 weeks of IV vancomycin and ceftriaxone. In conclusion, tibial fracture following FFF is an uncommon complication, yet it can be exacerbated by chronic osteomyelitis. This report highlights the importance of close observation and comprehensive wound care of donor sites after free flap harvest for head and neck reconstruction.

10.
Ear Nose Throat J ; 101(3): NP89-NP91, 2022 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-32776836

RESUMO

This report describes the first use of a novel workflow for in-house computer-aided design (CAD) for application in a resource-limited surgical outreach setting. Preoperative computed tomography imaging obtained locally in Haiti was used to produce rapid-prototyped 3-dimensional (3D) mandibular models for 2 patients with large ameloblastomas. Models were used for patient consent, surgical education, and surgical planning. Computer-aided design and 3D models have the potential to significantly aid the process of complex surgery in the outreach setting by aiding in surgical consent and education, in addition to expected surgical applications of improved anatomic reconstruction.


Assuntos
Reconstrução Mandibular , Cirurgia Assistida por Computador , Desenho Assistido por Computador , Haiti , Humanos , Mandíbula/cirurgia , Reconstrução Mandibular/métodos , Modelos Anatômicos , Impressão Tridimensional
11.
Angle Orthod ; 91(3): 349-355, 2021 05 01.
Artigo em Inglês | MEDLINE | ID: mdl-33492364

RESUMO

OBJECTIVES: To evaluate the cytotoxicity effects of two different solder materials used for orthodontic appliances on human periodontal ligament fibroblast (HPLF) cells, and to determine whether the mechanism of toxicity may involve oxidative stress and apoptosis. MATERIALS AND METHODS: The silver solder samples (Leone and Summit) were soldered to orthodontic stainless steel bands and exposed to HPLF cells via cell culture inserts for 48 hours. Cytotoxicity effect of the soldered materials on HPLF cells was measured via tetrazolium salt 3-(4,5-dimethylthiazol-2-yl)-2, 5-diphenyltetrazolium bromide (MTT) colorimetric assay (n = 10/sample) and morphological observation. In addition, the mechanism of cytotoxicity of the most toxic silver solder was investigated using both a caspase inhibitor Z-VAL-Ala-Asp-flu-oromethylketone (ZVAD-fmk) and the free radical scavenger Trolox (n = 8/sample). Statistical analysis was performed using one-way analysis of variance with a Bonferroni test. P < .05 was considered statistically significant. RESULTS: Compared to the control (no treatment, cells only), both silver solders were cytotoxic (P < .001). The bands alone were significantly cytotoxic compared to the control. There was a significant difference in cytotoxicity between the stainless steel bands alone and the Summit silver solder (P < .001), but not the Leone silver solder. The Summit silver solder was more cytotoxic than the Leone silver solder (P < .05). MTT results were supported by the microscopic morphological changes of the HPLF cells. Neither ZVAD-fmk nor Trolox provided significant protection. CONCLUSIONS: The two silver solder materials demonstrated different levels of cytotoxicity, and neither oxidative stress nor apoptosis is involved in the mechanism of cytotoxicity.


Assuntos
Antioxidantes , Prata , Antioxidantes/farmacologia , Apoptose , Fibroblastos , Humanos , Indicadores e Reagentes , Ligamento Periodontal , Prata/toxicidade
12.
Facial Plast Surg Aesthet Med ; 23(1): 36-41, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-32614617

RESUMO

Importance: Mandibular condyle reconstruction with vascularized free flaps can re-establish form and function after resection. However, no reports have been published regarding the postoperative anatomic seating of these reconstructions. Objective: To use postoperative axial imaging to determine whether condylar reconstructions migrate and correlate their ultimate location with postoperative symptoms. Design, Setting, and Participants: A prospectively maintained database of free flap cases performed between 2006 and 2019 at a single institution was queried. Twenty-one consecutive patients who underwent reconstructions that involved the mandibular condyle who also had postoperative axial imaging were selected for review. Distances were measured from the reconstructed condyle to the lateral, superior, and posterior aspect of the temporomandibular joint (TMJ), and correlated with postoperative symptoms and jaw function. Main Outcomes and Measures: Condyle displacement, postoperative diet, jaw pain, trismus, and malocclusion. Results: In total, 57% of patients had 1 cm or greater displacement of the condylar reconstruction from the TMJ in at least one vector. Anterior displacement of condyle by >1 cm was associated with jaw misalignment (42.8%) and clicking (14.3%) [odds ratio (OR) 37.3, 95% confidence interval (CI) 1.6-866.9, p = 0.024]. However, 83.3% of these patients were able to return to a normal diet and denied dysphagia. All edentulous patients had acceptable anteroposterior alignment, but 42.8% of dentulous patients had anterior displacement >1 cm (p = 0.12). Inferior displacement >1 cm was associated with dysphagia (OR 23, 95% CI 1.07-494.6, p = 0.04), but not pain or trismus. Eleven patients had multiple postoperative computed tomography scans, on average 21 months apart. The reconstructed location was stable in all 11 patients. Conclusions and Relevance: Patients undergoing free flap reconstruction of the mandibular condyle often return to normal diet, even when their reconstructions do not sit perfectly within the TMJ. Anterior displacement of the neocondyle may be more common in dentulous patients due to stress on the joint from chewing and produces some dysfunction and misalignment. Inferior displacement of the neocondyle may result in dysphagia. The reconstructed condyles are unlikely to migrate over time.


Assuntos
Retalhos de Tecido Biológico , Côndilo Mandibular/cirurgia , Reconstrução Mandibular/métodos , Adulto , Dieta , Feminino , Humanos , Masculino , Má Oclusão/epidemiologia , Côndilo Mandibular/anatomia & histologia , Côndilo Mandibular/diagnóstico por imagem , Medição da Dor , Complicações Pós-Operatórias/epidemiologia , Estudos Prospectivos , Tomografia Computadorizada por Raios X , Trismo/epidemiologia
13.
Otolaryngol Head Neck Surg ; 162(5): 641-648, 2020 05.
Artigo em Inglês | MEDLINE | ID: mdl-32204662

RESUMO

OBJECTIVE: To determine the frequency at which patients with osteocutaneous free flap reconstruction of the head and neck develop long-term complications and identify predisposing perioperative factors. STUDY DESIGN: A prospectively maintained database of free flaps performed at a single institution over a 10-year period was queried. SETTING: Single tertiary care referral center. SUBJECTS AND METHODS: In total, 250 osseous or osteocutaneous free flaps (OCFFs) for mandibular or maxillary reconstruction were analyzed. Data were collected on demographics, preoperative therapy, resection location, adjuvant treatment, complications, and subsequent surgeries, and multivariate analysis was performed. Subgroup analysis based on perioperative factors was performed. RESULTS: The median follow-up time was 23 months. In 185 patients with at least 6 months of follow-up, 17.3% had at least 1 long-term complication, most commonly wound breakdown, fistula or plate extrusion (13.5%), osteoradionecrosis or nonunion (6.5%), and infected hardware (5.9%). Prior chemoradiotherapy and cancer diagnosis predisposed patients to long-term complications. At the 5-year follow-up, 21.7% of patients had experienced a long-term complication. CONCLUSIONS: Long-term complications after OCFF occurred in 17% of patients. In this series, a preoperative history of chemoradiation and those undergoing maxillary reconstruction were at high risk for the development of long-term complications and thus warrant diligent follow-up. However, OCFFs can often enjoy long-term viability and survival, even in the case of perioperative complications and salvage surgery.


Assuntos
Retalhos de Tecido Biológico , Neoplasias de Cabeça e Pescoço , Osteorradionecrose , Procedimentos de Cirurgia Plástica , Neoplasias de Cabeça e Pescoço/etiologia , Neoplasias de Cabeça e Pescoço/cirurgia , Humanos , Mandíbula/cirurgia , Osteorradionecrose/etiologia , Complicações Pós-Operatórias/etiologia , Procedimentos de Cirurgia Plástica/efeitos adversos , Estudos Retrospectivos
14.
Otolaryngol Head Neck Surg ; 163(5): 956-962, 2020 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-32539525

RESUMO

OBJECTIVE: To describe the natural history of bone segment union in head and neck free flap procedures and detail the association of poor segment union with postoperative complications. STUDY DESIGN: Case series with chart review. SETTING: Single tertiary care referral center. SUBJECTS AND METHOD: Patients with mandibular or maxillary defects reconstructed with osseous or osteocutaneous free flaps were analyzed (n = 104). Postoperative computed tomography or positron emission tomography/computed tomography scans were reviewed for signs of osseointegration and nonunion. Postoperative wound complications were correlated with imaging findings. RESULT: Thirty-seven percent of appositions had partial union on nonunion. Appositions between osteotomized free flap segments form complete unions at a higher rate than appositions with native bone (65% vs 53%, P = .0006). If an apposition shows a gap of ≥1 mm, the chances of failing to form a complete union are greatly increated (79% vs 8%, P = .0009). Radiographic nonunion was associated with an increased likelihood of postoperative wound complications (40% vs 19%, P = .025) and in most cases was present before development of complications. CONCLUSION: Radiographic evidence of partial union or nonunion of free flap osseous segments greatly exceeds reported rates of clinically evident nonunion. Unions likely form between free flap appositions before unions to the native bone. If initial bone segments are >1-mm apart, the chance of progression to complete union is low. Incomplete osseointegration appears to be a marker for development of wound complications.


Assuntos
Transplante Ósseo , Retalhos de Tecido Biológico , Mandíbula/cirurgia , Maxila/cirurgia , Cicatrização , Feminino , Humanos , Masculino , Mandíbula/diagnóstico por imagem , Neoplasias Mandibulares/cirurgia , Neoplasias Bucais/cirurgia , Procedimentos Cirúrgicos Bucais , Osteonecrose/cirurgia , Complicações Pós-Operatórias , Estudos Prospectivos , Procedimentos de Cirurgia Plástica , Falha de Tratamento
15.
Oral Oncol ; 101: 104508, 2020 02.
Artigo em Inglês | MEDLINE | ID: mdl-31864958

RESUMO

OBJECTIVES: Reconstruction of the midface has many inherent challenges, including orbital support, skull base reconstruction, optimizing midface projection, separation of the nasal cavity and dental rehabilitation. Subscapular system free flaps (SF) have sufficient bone stock to support complex reconstruction and the option of separate soft tissue components. This study analyzes the effect of virtual surgical planning (VSP) in SF for midface on subsite reconstruction, bone segment contact and anatomic position. MATERIALS AND METHODS: Retrospective cohort of patients with midface defects that underwent SF reconstruction at a single tertiary care institution. RESULTS: Nine cases with VSP were compared to fourteen cases without VSP. VSP was associated with a higher number of successfully reconstructed subunits (5.9 vs 4.2, 95% CI of mean difference 0.31-3.04, p = 0.018), a higher number of successful bony contact between segments (2.2 vs 1.4, 95% CI of mean difference 0.0-1.6, p = 0.050), and a higher percent of segments in anatomic position (100% vs 71%, 95% CI of mean difference 2-55%, p = 0.035). When postoperative bone position after VSP reconstruction was compared to preoperative scans, the difference in anteroposterior, vertical and lateral projection compared to the preoperative 'ideal' bone position was <1 cm in 82% of measurements. There were no flap losses. CONCLUSION: VSP may augment SF reconstruction of the midface by allowing for improved subunit reconstruction, bony segment contact and anatomically correct bone segment positioning. VSP can be a useful adjunct for complex midface reconstruction and the benefits should be weighed against cost.


Assuntos
Simulação por Computador , Ossos Faciais/cirurgia , Retalhos de Tecido Biológico , Procedimentos de Cirurgia Plástica , Adulto , Idoso , Idoso de 80 Anos ou mais , Ossos Faciais/anormalidades , Ossos Faciais/diagnóstico por imagem , Feminino , Humanos , Imageamento Tridimensional/métodos , Masculino , Pessoa de Meia-Idade , Planejamento de Assistência ao Paciente , Procedimentos de Cirurgia Plástica/métodos , Adulto Jovem
16.
Laryngoscope ; 129(4): 1010-1013, 2019 04.
Artigo em Inglês | MEDLINE | ID: mdl-30208214

RESUMO

OBJECTIVES: Transoral robotic surgery (TORS) and upper airway stimulation (UAS) are modalities for treating tongue base obstruction contributing to obstructive sleep apnea (OSA). We aim to compare patients with OSA undergoing TORS to those undergoing UAS. METHODS: We retrospectively reviewed patients treated with TORS and UAS using the senior authors' surgical database. We evaluated demographic, preoperative polysomnography (PSG), postoperative PSG, complication, hospital length of stay, and hospital readmission data to compare the two cohorts. RESULTS: Seventy-six patients underwent UAS. This included 50 men and 26 women. The mean age and body mass index were 61.92 and 29.38. The mean pre- versus postoperative apnea hypopnea index (AHI) and O2 nadir were 36.64 versus 7.20 and 80.27% versus 88.77%, respectfully. The rate of surgical success and postoperative AHI less than 15 and 5 were 86.84%, 89.47%, and 59.21. All patients underwent ambulatory surgery, and no one was readmitted. Twenty-four patients underwent TORS. This included 20 men and four women with a mean age and body mass index BMI of 46.42 and 29.63. The mean pre- versus postoperative AHI and O2 nadir were 35.70 versus 20.05 and 80.50% versus 84.10%, respectfully. The rate of surgical success and postoperative AHI less than 15 and 5 were 54.17%, 50.00%, and 20.83%. The mean length of stay was 1.33 days, and four patients were readmitted. We found significant differences in age, postoperative AHI and O2 nadir, surgical success and postoperative AHI less than 15 and 5, length of stay, and rate of readmission. CONCLUSIONS: UAS is successful in treating OSA showing improved outcomes, length of stay, and readmission compared to TORS. LEVEL OF EVIDENCE: 3 Laryngoscope, 129:1010-1013, 2019.


Assuntos
Terapia por Estimulação Elétrica , Glossectomia/métodos , Procedimentos Cirúrgicos Robóticos , Apneia Obstrutiva do Sono/terapia , Feminino , Humanos , Nervo Hipoglosso , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos
17.
Otolaryngol Head Neck Surg ; 137(5): 735-41, 2007 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-17967637

RESUMO

OBJECTIVE: To test the feasibility of contrast-enhanced ultrasound (CEUS)-guided sentinel lymph node biopsy (SNB) of the head and neck in a porcine model. STUDY DESIGN AND SETTING: In this prospective, nonrandomized study, methylene blue and Sonazoid were injected into the lateral tongue or floor of mouth (FOM) of four swine. Real-time CEUS was used to identify contrast in the lymphatic channels flowing to the sentinel lymph node (SLN). Endoscopic or open SNB was performed. Neck dissection was then performed, and the residual nodal packet was examined for remaining contrast-enhancing or blue dye-stained nodes. RESULTS: In all eight procedures, the SLN was visualized with ultrasound and blue dye. Seven procedures identified a single SLN, and one identified two SLNs. Subsequent neck dissections revealed no other nodes containing methylene blue or contrast in the nodal specimen or operative bed. CONCLUSION/SIGNIFICANCE: CEUS-guided SNB of the head and neck in swine is feasible, with success comparable to blue dye-guided SNB. This technique may offer several advantages over traditional techniques, and warrants further study.


Assuntos
Neoplasias de Cabeça e Pescoço/patologia , Linfonodos/diagnóstico por imagem , Biópsia de Linfonodo Sentinela/métodos , Animais , Meios de Contraste , Modelos Animais de Doenças , Estudos de Viabilidade , Neoplasias de Cabeça e Pescoço/diagnóstico por imagem , Neoplasias de Cabeça e Pescoço/cirurgia , Esvaziamento Cervical , Estudos Prospectivos , Suínos , Ultrassonografia
18.
Ann Otol Rhinol Laryngol ; 126(3): 216-218, 2017 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-28056531

RESUMO

OBJECTIVES: To present a unique series of sublingual gland sialolithiasis treated with sialendoscopy. METHODS: A retrospective chart review of patients at a single tertiary care academic center undergoing sialendoscopy. RESULTS: We present a series of 4 patients who presented with 1 episode each of sialadenitis without preceding postprandial symptoms. In each case, sialendoscopy identified the calculi embedded within the sublingual duct of Bartholin at its emptying point into Wharton's duct. The large size of the stones did not permit endoscopic removal, and transoral excision was performed via a floor of mouth incision. All patients recovered well with resolution of preoperative symptoms. CONCLUSIONS: Sublingual gland sialolithiasis has a distinct presentation that is not associated with obstructive symptoms and may be successfully treated with a combined endoscopic and transoral approach. Sialendoscopy allows identification of the location of the sialolith to guide removal and helps identify stone fragments and additional stones remaining after sialolithotomy. Transoral resection of the sublingual gland in this scenario facilitates stone removal and may minimize long-term chance of ranula formation.


Assuntos
Endoscopia , Cálculos das Glândulas Salivares/patologia , Cálculos das Glândulas Salivares/cirurgia , Glândula Sublingual , Adulto , Idoso , Feminino , Humanos , Pessoa de Meia-Idade , Estudos Retrospectivos , Resultado do Tratamento , Adulto Jovem
19.
JAMA Otolaryngol Head Neck Surg ; 142(5): 467-71, 2016 05 01.
Artigo em Inglês | MEDLINE | ID: mdl-27010455

RESUMO

IMPORTANCE: Dysphagia is a frequently reported sequela of treatment for head and neck cancer and is often managed with esophageal dilation in patients with dysphagia secondary to hypopharyngeal or esophageal stenosis. Reported complications of esophagoscopy with dilation include bleeding, esophageal perforation, and mediastinitis. These, though rare, can lead to substantial morbidity or mortality. In patients who have undergone irradiation, tissue fibrosis and devascularization may contribute to a higher incidence of these complications. OBJECTIVES: To describe the occurrence of cervical spine spondylodiscitis (CSS) following esophageal dilation in patients with a history of laryngectomy or pharyngectomy and irradiation with or without chemotherapy. DESIGN, SETTING, AND PARTICIPANTS: Medical records from a 5-year period (January 1, 2009, through December 31, 2014) in an academic tertiary care center were searched for patients with a history of laryngopharyngeal irradiation and a diagnosis of CSS following esophageal dilation. Four eligible patients were identified. MAIN OUTCOMES AND MEASURES: Recognition and treatment of CSS in the study population. RESULTS: A total of 1221 patients underwent esophageal dilation for any reason. Of these, 247 patients carried a diagnosis of head and neck cancer at the following sites: piriform sinus, larynx, hypopharynx, epiglottis, oropharynx, base of the tongue, and tonsil. Of these, 4 patients with a diagnosis of CSS following esophageal dilation were included in this assessment. Prompt diagnosis and multidisciplinary management of CSS with intravenous antibiotics as well as spinal surgical debridement and stabilization led to recovery of full ability to take food by mouth in 3 of the 4 included patients. One patient remained dependent on the feeding tube. CONCLUSION AND RELEVANCE: In patients with a history of laryngopharyngeal irradiation and esophageal dilation, complaints of neck pain or upper extremity weakness should trigger immediate evaluation for CSS; if present, prompt therapy is essential for prevention of substantial morbidity and mortality.


Assuntos
Vértebras Cervicais , Dilatação/efeitos adversos , Discite/diagnóstico , Discite/etiologia , Estenose Esofágica/terapia , Esofagoscopia/efeitos adversos , Idoso , Desbridamento , Transtornos de Deglutição/etiologia , Transtornos de Deglutição/terapia , Discite/terapia , Discotomia , Estenose Esofágica/etiologia , Humanos , Ílio/transplante , Neoplasias Laríngeas/radioterapia , Neoplasias Laríngeas/cirurgia , Laringectomia , Masculino , Pessoa de Meia-Idade , Debilidade Muscular/etiologia , Cervicalgia/etiologia , Neoplasias Faríngeas/radioterapia , Neoplasias Faríngeas/cirurgia , Faringectomia , Radioterapia/efeitos adversos , Fusão Vertebral
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA