Treatment strategy in laryngeal chondrosarcoma: a multicenter study of 43 cases.

PURPOSE: Laryngeal chondrosarcoma is a rare tumor that mostly affects the cricoid cartilage. The aim of this study was to compare outcomes between the various treatments of this pathology as there are no official guidelines for this pathology. METHODS: A retrospective analysis of the pathology database of nine French tertiary care centers was conducted. Outcomes of patients treated by total laryngectomy were compared with those treated by more conservative approaches (endoscopic debulking, median thyrotomy, partial laryngectomy). Two Kaplan-Meier survival analyses were performed: one to assess the overall survival rate and the other to assess laryngeal preservation over time. RESULTS: A total of 43 patients were enrolled: 12 with total laryngectomy as the initial treatment, and 31 who initially underwent laryngeal-preserving treatment. With conservative treatment, laryngeal function was preserved in 96% and 75% of patients at 1 and 5 years, respectively. Conservative treatment did not reduce the overall survival rate. CONCLUSION: These results suggest that laryngeal preservation should be considered as the initial treatment in cases of laryngeal chondrosarcoma.

Evaluation of vestibular function following endolymphatic sac surgery.

PURPOSE: To evaluate objective vestibular function after endolymphatic sac surgery (ELSS) for Menière's disease (MD), using comparative vestibular function tests: videonystagmography (VNG), vestibular evoked myogenic potentials (VEMP) and video head-impulse test (VHIT) METHODS: Patients with definite MD using the American Academy of Otolaryngology-Head and Neck Surgery (AAO-HNS) of 1995 criteria modified in 2015 and treated with ELSS (sac decompression or sac opening) were included. The primary outcome was the preservation of vestibular function, comparing pre- and postoperative vestibular function tests: VNG, VEMP, VHIT. Secondary outcomes were control of episodes of vertigo, hearing outcome using AAO-HNS criteria, and QoL using the Menière's disease outcome questionnaire. RESULTS: 73 patients were included in the study. We found a significant preservation of vestibular function as measured by VNG and VHIT. There was no statistical difference in the presence or absence of cervical and ocular (P13/N23 and N1/P1) waves on VEMP pre- and postoperatively. 67% of patients had good control of episodes of vertigo post-operatively, with significantly better results in the sac opening group (75%). There was no significant change in hearing postoperatively, and QoL scores were significantly improved after surgery (p < 0.0001). CONCLUSION: Endolymphatic sac surgery (ELSS) is a conservative surgical treatment, which does not negatively impact vestibular function. It was associated with improved control of episodes of vertigo, preservation of hearing, and a clear improvement in QoL scores. Despite its pathophysiology not being fully understood, it remains a first-line procedure preserving vestibular function, for MD refractory to medical management.

Prospective evaluation of oral corticosteroid as a predictor of postoperative olfactory recovery after functional endoscopic surgery for nasal polyposis.

PURPOSE: Anticipating the possibility of olfactory recovery after functional endoscopic surgery (FES) in nasal polyposis (NP) is difficult. The main objective of this study was to assess the predictive factors of recovering the sense of smell after radical bilateral ethmoidectomy. Secondary objectives were to identify other predictors of olfactory recovery. METHODS: Open prospective study was conducted at the Nantes University Hospital including all patients with NP operated on in the Ear, Nose, and Throat Department between January 2011 and September 2017. These patients underwent functional endoscopic surgery (radical ethmoidectomy) after medical treatment failure. Olfaction was quantified prospectively and systematically during the preoperative consultation using a visual analog scale. Multivariate analysis evaluated the presence of predictive factors of postoperative olfactory recovery. RESULTS: One hundred nineteen patients were included in the study. Overall, olfaction was partially improved after surgery. For patients who presented greater than 50% recovery of olfaction after systemic corticosteroid therapy before surgery, we observed a predictive better rate of olfactory recovery after surgery (p < 0.001). Age over 65 years, a history of sinonasal surgery, associated asthma, and bacterial colonization were not associated with less postoperative olfactory recovery. CONCLUSION: This study identified an objective factor that may influence olfactory recovery after FES using a therapeutic trial for olfactory recovery after oral corticosteroid treatment taken before surgery.

Vascular Supply of the Auricle: Anatomical Study and Applications to External Ear Reconstruction.

BACKGROUND: Reliable reconstructive flaps require convenient vascular supply. Thus, precise description of the vascular patterns of external ear is not completely elucidated. OBJECTIVE: This anatomical study aims to provide comprehensive data of the arterial network of the auricular region, anastomosis, and patterns of arterial dependence regarding external ear subunits. MATERIALS AND METHODS: After dyed latex injections in the external carotid artery, eleven auricles have been carefully dissected to examine the vascular network of the auricular region. RESULTS: In all cases, the posterior auricular artery (PAA) supplied the cranial side of the auricle, as well as the concha on the lateral side through consistent perforating branches. The superficial temporal artery (STA) network supplied the upper third of the lateral aspect of the auricle. The authors' dissections showed a clear dominance of the PAA supply. However, the two arteries consistently developed anastomoses particularly in the cranial upper third of the auricle. CONCLUSION: Consistent branches and anastomoses between the PAA and the STA network provide reliable pedicles for auricular and facial reconstruction.

Transcutaneous Ultrasonography in Early Postoperative Diagnosis of Vocal Cord Palsy After Total Thyroidectomy.

PURPOSE: This study evaluated the efficiency of transcutaneous laryngeal ultrasonography (TLUS) as an alternative to direct flexible laryngoscopy (DFL) in the early postoperative screening of vocal cord palsy (VCP) after total thyroidectomy, performed for benign and non-extensive malignant disease. METHODS: A prospective study was performed on patients who underwent total thyroidectomy between October 2013 and January 2015 at the Nantes University Hospital (France). Patients underwent DFL on postoperative day 1 performed by an otolaryngologist, followed by TLUS performed by a radiologist on postoperative day 1 or 2. RESULTS: One hundred and three (103) patients were included in this study, 17.5% were male and 82.5% were female, with a mean age of 51 ± 12 years. Nine patients (9.5%) were diagnosed with postoperative VCP using DFL of these cases 2 were not completely resolved at 3 months postoperatively. Three cases of VCP (33%) were diagnosed using TLUS. TLUS had a sensitivity of 33% and a negative predictive value (NPV) of 95% for the diagnosis of postoperative VCP. Vocal cords (VC) were unassessable in 27.2% of patients. Unassessable VC were significantly associated with male gender (p = 0.0001), age (p = 0.0001), weight (p = 0.002), operating time (p = 0.032), postoperative drainage (p = 0.001), and thyroid weight (p = 0.001). Independent risk factors in the multivariate analysis were male gender (p = 0.0001) and age (p = 0.0001). In the group of women under 50-year old, TLUS had a sensitivity of 50% and a NPV of 97.4%. CONCLUSION: TLUS sensitivity is insufficient in early postoperative screening of VCP after thyroid surgery. Ultrasonographic VCP diagnosis should be confirmed with DFL.

Cervical spondylodiscitis following an invasive procedure on the neopharynx after circumferential pharyngolaryngectomy: a retrospective case series.

PURPOSE: To highlight cervical spondylodiscitis as an infrequent complication following an invasive procedure on the neopharynx in patients previously treated with circumferential pharyngolaryngectomy with pectoralis major myocutaneous flap reconstruction. METHODS: Patients diagnosed with cervical spondylodiscitis after circumferential pharyngolaryngectomy between 2001 and 2013 were retrospectively studied using a questionnaire sent to the French head and neck tumour study group. Medical history; tumour management; clinical symptoms; biological, microbiological and imaging results; and management of the infection were collected for each patient. RESULTS: Six men aged 51-66 years were diagnosed with spondylodiscitis on average 5.6 years after circumferential pharyngolaryngectomy, and a mean 2 months following an invasive procedure on the neopharynx (oesophageal dilatation, phonatory prosthesis insertion). The patients presented with cervical pain and increased CRP level. MRI showed epidural abscess and communication between the pharynx and vertebral bodies in most cases. Microbiological samples yielded bacteria from the pharynx flora. Infection was managed using antibiotics adjusted according to the culture results and spinal immobilisation for duration of 6-12 weeks. No surgical treatment was required. During follow-up, no patient experienced recurrence or residual disability. CONCLUSIONS: Cervical spondylodiscitis is a rare but potentially severe complication following an invasive procedure on the neopharynx after circumferential pharyngolaryngectomy. Therefore, the onset of nonspecific symptoms should not be overlooked, and MRI must be performed if infection is suspected. Microbiological confirmation is critical in optimising treatment, which should be aggressive, even if overall prognosis seems to be good.

Micro-CT Analysis of Radiation-Induced Osteopenia and Bone Hypovascularization in Rat.

Treatment of carcinomas of the upper aerodigestive tract often requires external radiation therapy. However, radiation affects all the components of bone, with different degrees of sensitivity, and may produce severe side effects such as mandibular osteoradionecrosis (ORN). Intraosseous vascularization is thought to be decreased after irradiation, but its impact on total bone volume is still controversial. The aim of this study was to compare intraosseous vascularization, cortical bone thickness, and total bone volume in a rat model of ORN versus nonirradiated rats, using a micro-computed tomography (micro-CT) analysis after intracardiac injection of a contrast agent. The study was performed on 8-week-old Lewis 1A rats (n = 14). Eleven rats underwent external irradiation on the hind limbs by a single 80-Gy dose. Three rats did not receive irradiation and served as controls for statistical analysis. Eight weeks after the external irradiation, all the animals received a barium sulfate intracardiac injection under general anesthesia. All samples were analyzed with the micro-computed tomography system at a resolution of 5.5 µm. The images were later processed to create 3D reconstructions and study vascularization, bone volume, and cortical thickness. Data from irradiated and nonirradiated rats were compared using the Kruskal-Wallis test. No animal died after irradiation. Nineteen irradiated tibias and six nonirradiated tibias were included for micro-CT analysis. The vessel percentage was significantly lower in irradiated bones (p = 0.0001). The distance between the vessels, a marker of vascular destruction, was higher after irradiation (p = 0.001). The vessels were also more altered distally after irradiation (p = 0.028). Cortical thickness was severely decreased after irradiation, sometimes even reduced to zero. Both trabecular and cortical structures were destroyed after irradiation, with wide bone gaps. Finally, both total bone volume (p = 0.0001) and cortical thickness (p = 0.0001) were significantly decreased in irradiated tibias compared to nonirradiated tibias. These results led to multiple spontaneous fractures in the irradiated group, and the destruction of intraosseous vessels observed macroscopically with the radiographic preview. This study revealed the impact of radiation on intraosseous vasculature and cortical bone with a micro-CT analysis in a rat ORN model. Hypovascularization and osteopenia are consistent with the literature, contributing a morphological scale with high resolution. Visualization of the vasculature by micro-CT is an innovative technique to see the changes after radiation, and should help adjust bone tissue engineering in irradiated bone.

Development of a cyclosporin-A-induced immune tolerant rat model to test marrow allograft cell type effects on bone repair.

Bone repair is an important concept in tissue engineering, and the ability to repair bone in hypotrophic conditions such as that of irradiated bone, represents a challenge for this field. Previous studies have shown that a combination of bone marrow and (BCP) was effective to repair irradiated bone. However, the origin and role played by each cell type in bone healing still remains unclear. In order to track the grafted cells, the development of an animal model that is immunotolerant to an allograft of bone marrow would be useful. Furthermore, because the immune system interacts with bone turnover, it is of critical importance to demonstrate that immunosuppressive drugs do not interfere with bone repair. After a preliminary study of immunotolerance, cyclosporin-A was chosen to be used in immunosuppressive therapy. Ten rats were included to observe qualitative and quantitative bone repair 8 days and 6 weeks after the creation of bone defects. The defects were filled with an allograft of bone marrow alone or in association with BCP under immunosuppressive treatment (cyclosporin-A). The results showed that there was no significant interaction of cyclosporin-A with osseous regeneration. The use of this new immunotolerant rat model of bone marrow allograft in future studies will provide insight on how the cells within the bone marrow graft contribute to bone healing, especially in irradiated conditions.

Oncological and functional outcomes for transoral robotic surgery following previous radiation treatment for upper aerodigestive tract head and neck cancers. A French multicenter GETTEC group study.

BACKGROUND: Transoral robotic surgery (TORS) opens new perspectives. We evaluated the outcomes for patients having undergone TORS after previous radiotherapy. METHODS: A retrospective multicenter study (n = 138) in a previously irradiated area between 2009 and 2020. Survival was assessed with the Kaplan-Meier method. Prognostic factors were evaluated using a chi-squared test, Fisher's test, or Wilcoxon's test. RESULTS: The median length of hospital stay was 12.5 days. Bleeding was the most frequent postoperative complication (15.2%, n = 22). Prophylactic vessel ligation did not significantly decrease bleeding. Complications were significantly lower for Tis, T1, and N0 tumors. 91.6% (n = 120) of the patients with a perioperative tracheotomy could be decannulated. Larynx was functional for 65.94% of the patients. The median length of follow-up was 26 months. The 5-year overall and relapse-free survival rates were respectively 59.9% and 43.4%. CONCLUSION: Oncological and functional results confirmed the value of TORS as a treatment in previously irradiated area.

Survival outcomes, prognostic factors, and effect of adjuvant radiotherapy and prophylactic neck dissection in salivary acinic cell carcinoma: A prospective multicenter REFCOR study of 187 patients.

BACKGROUND: Acinic cell carcinomas (AciCCs) are malignant tumours of the salivary glands. The aim of this work was to analyse data from the national REFCOR multicenter cohort (i) to investigate the prognostic factors influencing survival outcomes in AciCC, (ii) to assess the impact on survival of postoperative radiotherapy (RT) in patients treated for AciCC without high-grade transformation and (iii) to explore the prognostic impact of prophylactic neck dissection (ND) in patients treated for AciCC of the major salivary glands. PATIENTS AND METHODS: Data from all the patients treated for salivary AciCC between 2009 and 2020 were extracted from the REFCOR database. Survival outcomes and prognostic factors influencing Disease-Free Survival (DFS) and Overall Survival (OS) were investigated using univariate and multivariate analyses. Propensity score matching was used to assess the impact of postoperative RT and prophylactic ND on DFS. RESULTS: A total of 187 patients were included. After a median follow-up of 53 months, their 5-year OS and DFS rates were 92.8% and 76.2%, respectively. In multivariate analysis, male sex, older age, higher T and N status, and high grade were independently associated with a worse DFS. In the subpopulation analysed after propensity score matching, patients with cN0 AciCC without high-grade transformation who were treated by surgery and RT did not have an improved DFS compared to patients who were treated by surgery alone (hazard ratio (HR) = 0.87, p = 0.8). Factors associated with nodal invasion were T3-T4 status and intermediate/high histological grade. After propensity score matching, prophylactic ND was associated with a trend toward a better DFS (HR = 0.46, p = 0.16). CONCLUSIONS: These results suggest that (i) long-term follow-up (>5 years) should be considered in patients with AciCC, (ii) treatment by surgery alone could be an option in selected cN0 patients with AciCC without high-grade transformation and (iii) prophylactic ND may be considered preferentially in patients with T3-T4 status and/or intermediate/high histological grade.

Development of a Rat Model of Mandibular Irradiation Sequelae for Preclinical Studies of Bone Repair.

Repairing mandibular bone defects after radiotherapy of the upper aerodigestive tract is clinically challenging. Although bone tissue engineering has recently generated a number of innovative treatment approaches for osteoradionecrosis (ORN), these modalities must be evaluated preclinically in a relevant, reproducible, animal model. The objective of this study was to evaluate a novel rat model of mandibular irradiation sequelae, with a focus on the adverse effects of radiotherapy on bone structure, intraosseous vascularization, and bone regeneration. Rats were irradiated with a single 80 Gy dose to the jaws. Three weeks after irradiation, mandibular bone defects of different sizes (0, 1, 3, or 5 mm) were produced in each hemimandible. Five weeks after the surgical procedure, the animals were euthanized. Explanted mandibular samples were qualitatively and quantitatively assessed for bone formation, bone structure, and intraosseous vascular volume by using micro-computed tomography, scanning electron microscopy, and histology. Twenty irradiated hemimandibles and 20 nonirradiated hemimandibles were included in the study. The bone and vessel volumes were significantly lower in the irradiated group. The extent of bone remodeling was inversely related to the defect size. In the irradiated group, scanning electron microscopy revealed a large number of polycyclic gaps consistent with periosteocytic lysis (described as being pathognomonic for ORN). This feature was correlated with elevated osteoclastic activity in a histological assessment. In the irradiated areas, the critical-sized defect was 3 mm. Hence, our rat model of mandibular irradiation sequelae showed hypovascularization and osteopenia. Impact statement Repairing mandibular bone defects after radiotherapy of the upper aerodigestive tract is clinically challenging. Novel tissue engineering approaches for healing irradiated bone must first be assessed in animal models. The current rat model of mandibular irradiation sequelae is based on tooth extraction after radiotherapy. However, the mucosal sequelae of radiotherapy often prevent the retention of tissue-engineered biomaterials within the bone defect. We used a submandibular approach to create a new rat model of mandibular irradiation sequelae, which enables the stable retention of biomaterials within the bone defect and should thus facilitate the assessment of bone regeneration.

Ludwig's angina: A diagnostic and surgical priority.

Ludwig's angina has been known for two centuries as a rapidly and frequently fatal progressive gangrenous cellulitis or necrotizing fasciitis of the neck and the floor of the mouth. The management of the usually young patients affected requires a trained team combining medical skills in surgery, antibiotic therapy, and resuscitation. The prognosis is directly related to early surgical debridement and the experience of the team managing these patients. We present four cases of severe necrotizing cervical cellulitis notably associated with concomitant self-medication with non-steroidal anti-inflammatory drugs. Through these cases, we conclude that several surgical steps could be required, combined with broad-spectrum antibiotic therapy. An optimal surgery, draining all collections and excising all necrotic tissues, seems to be a condition needed for antibiotic efficacy and finally healing.

A Novel Absorbable Stapler Provides Patient-Reported Outcomes and Cost-Effectiveness Noninferior to Subcuticular Skin Closure: A Prospective, Single-Blind, Randomized Clinical Trial.

BACKGROUND: Deep dermal suturing is critical for scar quality outcomes. The authors evaluated a new, fast medical device for dermal suturing, with the hypothesis of noninferiority with regard to clinical scar and cost-effectiveness. METHODS: A prospective, patient-blind, randomized, multicenter noninferiority study in 26 French hospitals was conducted. Patients were randomized 1:1 to suturing with conventional thread or a semiautomatic stapler. The Patient Scar Assessment Scale was rated at 3 months for primary endpoint effectiveness. Secondary endpoints were cost-effectiveness of the two suturing methods, prevalence of complications, suturing/operating time, Observer Scar Assessment Scale and Patient Scar Assessment Scale score, scar aesthetic quality 18 months after surgery, and occupational exposure to blood during surgery. RESULTS: Six hundred sixty-four patients were enrolled, 660 were randomized, and 649 constituted the full analysis (stapler arm, n = 324; needle arm, n = 325). Primary endpoint Patient Scar Assessment Scale score in the stapler arm was not inferior to that in the needle arm at 3 months or after 18 months. The mean operating time was 180 minutes in the stapler arm and 179 minutes in the needle arm (p = not significant). The mean suturing time was significantly lower in the stapler arm (p < 0.001). There were seven occupational exposures to blood in the needle arm and one in the stapler arm. The two arms did not differ significantly in terms of complications (p = 0.41). The additional cost of using the device was &OV0556;51.57 for the complete-case population. CONCLUSION: Wound healing outcome was no worse than with conventional suturing using a semiautomatic stapler and associated with less occupational exposure to blood. CLINICAL QUESTION/LEVEL OF EVIDENCE: Therapeutic, I.

Self-assessment of voice outcomes after total thyroidectomy using the Voice Handicap Index questionnaire: Results of a prospective multicenter study.

BACKGROUND: Voice disorders are frequent after thyroidectomy. We report the long-term voice quality outcomes after thyroidectomy using the voice handicap index self-questionnaire. METHODS: Eight hundred patients who underwent total thyroidectomy between 2014 and 2017 in 7 French hospitals were prospectively included. All patients filled in voice handicap index questionnaires, preoperatively and 2 and 6 months after surgery. RESULTS: Median (range) voice handicap index scores were significantly increased at month 2 (4 [0; 108]) compared to preoperative values (2 [0; 76]) and were unchanged at month 6 (2 [2; 92]). Clinically significant voice impairment (voice handicap index score difference ≥18 points) was reported in 19.7% at month 2 and 13% at month 6. Thirty-seven (4.6%) had postoperative vocal cord palsy. In patients with vocal cord palsy compared to those without, median voice handicap index scores were increased at month 2 (14 [0; 107] vs 4 [0; 108]; P = .0039), but not at month 6 (5 [0; 92] vs 2 [0; 87]; P = .0702). Clinically significant impairment was reported in 38% vs 19% at month 2 (P = .010), and in 19% vs 13% at month 6 (P = .310). Thyroid weight, postoperative hypocalcemia, vocal cord palsy, and absence of intraoperative neuromonitoring utilization were associated with an increased risk of clinically significant self-perceived voice impairment at month 2. CONCLUSION: Thyroidectomy impairs patients' voice quality perception in patients with and without vocal cord palsy.

Impact of total thyroidectomy on quality of life at 6 months: the prospective ThyrQoL multicentre trial.

OBJECTIVE: This study is to determine the impact of complications after total thyroidectomy on health-related quality of life (HR-QoL) and to identify significant predictive factors of HR-QoL changes. HR-QoL is usually impaired in patients with thyroid diseases compared to the general population. Thyroidectomy is largely performed in the case of benign thyroid benign and can be associated with long-term complications (vocal cord palsy, hypoparathyroidism). DESIGN: The prospective ThyrQoL multicenter trial (NCT02167529) included 800 patients who underwent total thyroidectomy for benign or malignant non-extensive disease in seven French referral hospitals between 2014 and 2016. METHODS: HR-QoL was assessed using the MOS 36-item short form health survey (SF-36) self-questionnaire with a 6-month follow-up. RESULTS: We observed a significant improvement of HR-QoL 6 months after surgery (P < 0.0001). Postoperative complications were associated with a non-significant impairment of HR-QoL. In multivariable analysis, Graves' disease was associated with a significant improvement of HR-QoL (OR = 2.39 [1.49; 3.84]) and thyroid malignant disease with an impairment of HR-QoL (OR = 1.44 [0.99; 2.08]) after thyroidectomy. CONCLUSION: We observed a significant improvement of HR-QoL 6 months after total thyroid surgery for benign thyroid disease.

A prospective multicentre REFCOR study of 470 cases of head and neck Adenoid cystic carcinoma: epidemiology and prognostic factors.

BACKGROUND: Adenoid cystic carcinoma (ACC) accounts for 1% of malignant head and neck tumours [1] and 10% of salivary glands malignant tumours. The main objective of our study is to investigate the prognostic factors influencing the event-free survival (EFS) of patients with ACC. PATIENTS AND METHODS: A multicentre prospective study was conducted from 2009 to 2018. All 470 patients with ACC whose survival data appear in the REFCOR database were included in the study. The main judgement criterion was EFS. Both a bivariate survival analysis using log-rank test and a multivariate using Cox model were performed using the R software. RESULTS: Average age was 55 years. Females accounted for 59.4% of the cohort. The body mass index (BMI) was normal in 86% of cases. Tumours were located in minor salivary glands in 60% of cases. T3/T4 stages represented 58%; 89% of patients were cN0. histological grade III was observed on 21% of patients. The EFS and overall 5-year survival rates were 50% and 85%, respectively. After adjustment, the most significant pejorative prognostic factors were age ≥65 years (hazard ratio [HR] = 1.67), BMI<16.5 (HR = 2.62), and lymph node invasion cN (HR = 2.08). CONCLUSION: Age, BMI and N stage are the three main clinical prognostic factors determining EFS identified in this prospective series of patients with ACC. Such findings open new research perspectives on the influence of these components on initial patient care.

CICAFAST: comparison of a biological dressing composed of fetal fibroblasts and keratinocytes on a split-thickness skin graft donor site versus a traditional dressing: a randomized controlled trial.

BACKGROUND: Wound repair is one of the most complex biological processes of human life. Allogeneic cell-based engineered skin substitutes provide off-the-shelf temporary wound coverage and act as biologically active dressings, releasing growth factors, cytokines and extracellular matrix components essential for proper wound healing. However, they are susceptible to immune rejection and this is their major weakness. Thanks to their low immunogenicity and high effectiveness in regeneration, fetal skin cells represent an attractive alternative to the commonly used autologous and allogeneic skin grafts. METHODS/DESIGN: We developed a new dressing comprising a collagen matrix seeded with a specific ratio of active fetal fibroblasts and keratinocytes. These produce a variety of healing growth factors and cytokines which will increase the speed of wound healing and induce an immunotolerant state, with a slight inflammatory reaction and a reduction in pain. The objective of this study is to demonstrate that the use of this biological dressing for wound healing at the split-thickness skin graft (STSG) donor site, reduces the time to healing, decreases other co-morbidities, such as pain, and improves the appearance of the scar. This investigation will be conducted as part of a randomized study comparing our new biological dressing with a conventional treatment in a single patient, thus avoiding the factors that may influence the healing of a graft donor site. DISCUSSION: This clinical trial should enable the development of a new strategy for STSG donor-wound healing based on a regenerative dressing. The pain experienced in the first few days of STSG healing is well known due to the exposure of sensory nerve endings. Reducing this pain will also reduce analgesic drug intake and the duration of sick leave. Our biological dressing will meet the essential need of surgeons to "re-crop" from existing donor sites, e.g., for thermal-burn patients. By accelerating healing, improving the appearance of the scar and reducing pain, we hope to improve the conditions of treatment for skin grafts. TRIAL REGISTRATION: ClinicalTrials.gov, ID: NCT03334656 . Registered on 7 November 2017.

Clinical and economic evaluation of minimally invasive cartilaginous palisade myringoplasty.

OBJECTIVES: To test the clinical and audiometric efficacy of a minimally invasive myringoplasty technique, combining cartilaginous palisades while avoiding flap elevation, for small and wide perforations. METHODS: Over 4 years, this retrospective study included all patients over 6 years of age presenting an indication for myringoplasty. Several clinical and economic criteria were noted at 7 d, 2 months, 6 months and 2 years postoperative. The main outcome was the absence of perforation 2 years postoperative. The secondary outcomes were an audiometric gain at 6 months and the evaluation of the treatment cost. RESULTS: Thirty patients underwent the minimally invasive technique and 28 patients the technique with an elevation of the tympanomeatal flap. The minimally invasive surgical procedure was shorter (p = .001). At 2 years, the tympanic closure rate was equivalent (95% versus 89.5%, p = .77). The audiometric gain was similar between the two techniques (p = .09). From a medico-economic point of view, the minimally invasive procedure was the most effective because it was three times less expensive than the conventional technique with no reduction in efficacy (p = .02). CONCLUSION: This quick and easy technique could be developed in an ambulatory setting or even in conditions adapted to consultation.

Correction: Bone marrow cell extract promotes the regeneration of irradiated bone.

[This corrects the article DOI: 10.1371/journal.pone.0178060.].

Oncologic outcomes with transoral robotic surgery for supraglottic squamous cell carcinoma: Results of the French Robotic Surgery Group of GETTEC.

BACKGROUND: Transoral robotic surgery (TORS) is an option to treat supraglottic squamous cell carcinomas (SCCs). We studied the oncologic outcomes after TORS for supraglottic laryngectomy (SGL). METHODS: We conducted a multicenter observational study of SGL using TORS for patients with supraglottic SCC with at least 2 years of follow-up. RESULTS: One hundred twenty-two patients were included in our study. Mean follow-up was 42.8 months. Local control was 94.3% at 2 years and 90.2% at 5 years. Overall survival and disease-free survival were 86.9% and 95.1% at 2 years, and 78.7% and 94.3% at 5 years, respectively. Sixty-three patients (51.6%) received adjuvant radiotherapy. For 16 of them, this was due to close or positive margins. CONCLUSION: Local control rate after TORS SGL was at least equivalent to what has been described in the literature for open or transoral laser surgery, or with radiotherapy. Using TORS seems to be an effective therapeutic treatment of early-stage and intermediate-stage supraglottic SCCs.