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INTRODUCTION: In the management of sinonasal malignancies treatment-induced morbidity and mortality is gaining relevance both for surgical approaches (endoscopic and open resection) and non-surgical therapies. The aim of this multicenter study is to assess complications associated with endoscopic surgery and non-surgical treatments (neoadjuvant and/or adjuvant) for malignant sinonasal tumors. METHODS: All patients with nasoethmoidal malignancies treated with curative intent with endoscopic or endoscopic-assisted surgery at three referral centers with uniform management policies were included. Neo- and/or adjuvant (chemo)radiotherapy was administered according to histology and pathological report. Demographics, treatment characteristics, and complications related both to the surgical and non-surgical approaches were retrieved. The data were analyzed with univariate and multivariate statistics to assess independent predictors of complications. RESULTS: Nine hundred and forty patients were included, 643 males (68%) and 297 females (32%). A total of 225 complications were identified in 187 patients (19.9%): cerebrospinal fluid (CSF) leak (3.5%), mucocele (2.3%), surgical site bleeding (2.0%), epiphora (2.0%), and radionecrosis (2.0%) were the most common. Treatment-related mortality was 0.4%. Variables independently associated with complications at multivariate analysis were principally dural resection (OR 1.92), cranioendoscopic or multiportal resection (OR 2.93), dural repair with multilayer technique with less than three layers (OR 2.17), and graft different from iliotibial tract (OR 3.29). CONCLUSION: Our study shows that modern endoscopic treatments and radiotherapy for sinonasal malignancies are associated with limited morbidity and treatment-related mortality. CSF leak and radionecrosis, although rare, remain the most frequent complications and should be further addressed by future research efforts.

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LITHIASIC SALIVARY GLAND PATHOLOGIES. Sialolithiasis is the most frequent pathology affecting the salivary glands. Almost 80% of these lithiasis affect the submandibular gland, in the Wharton duct whilst 20% occur in the parotid gland in the Stenon duct. The diagnosis is based on typical patient interrogation and clinical symptoms (intermittent facial swelling associated with eating, sialadenitis) and/or on paraclinical examination. Ultrasound echography is often prescribed, but CT-scan and sialo-MRI offer a more precise preoperative assessment. Minimally-invasive gland-preserving techniques such as sialendoscopy (combined or not with transoral duct surgery) are nowadays considered to be the method of first choice. These methods reach success rates above 80% and significantly reduce surgical complications and hospital stay.

PATHOLOGIES LITHIASIQUES DES GLANDES SALIVAIRES. Parmi les pathologies des glandes salivaires, les lithiases des canaux salivaires sont les plus fréquentes. Elles sont le plus souvent retrouvées dans les glandes sous-maxillaires au niveau des canaux de Wharton (80 %), et plus rarement dans les glandes parotides au niveau des canaux de Sténon (20 %). Le diagnostic repose sur l'interrogatoire et la clinique, qui peuvent être évocateurs (hernie ou coliques salivaires, sialite aiguë), et sur l'imagerie. L'échographie est un examen diagnostique très accessible, mais le scanner et la sialo-IRM permettent une évaluation préopératoire plus précise. Le traitement repose en première intention sur des traitements chirurgicaux conservateurs et mini-invasifs tels que la sialendoscopie, associée ou non à une approche transorale, qui sont efficaces dans 80 % des cas et permettent de réduire les complications postopératoires et la durée d'hospitalisation.

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OBJECTIVES: The improvements in survival with expansion of the survivors' population, along with evolution of endoscopically-based treatment modalities, have contributed to emphasize the clinical relevance of recurrences in sinonasal cancers. However, at present, literature is scant regarding the pattern of recurrences and the therapeutic strategies available to manage long survivors who experienced single or multiple failures. The aim of the present study was to analyze sinonasal cancers recurrences to provide data regarding rates and patterns of relapse, predictors of failure and prognostic impact of the recurrence. MATERIALS AND METHODS: All patients receiving multimodal treatments including endoscopic surgery between 1995 and 2021 in three European referral centers were included. Statistical analysis of survival was performed through univariable, multivariable and unidirectional multistate models. Survival after recurrence analysis was implemented for patients experiencing at least one recurrence. RESULTS: The 5- and 10-year recurrence free survival rates were 34.1% and 38.4% for the whole population. With a mean follow-up time of 60 months, a global recurrence rate of 32.9% was observed. The 5- and 10-year survival after recurrence rates were 27.2% and 21.7%, respectively. Incidence and rates of recurrences were significantly associated with histology subtypes. CONCLUSION: This study provides valuable oncologic outcomes regarding a large homogenous cohort of patients affected by sinonasal malignances treated within a multimodal framework, emphasizing the strong correlation of histologic type with prognosis, as well as with pattern of recurrences.

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BACKGROUND: Over the last 2 decades, transnasal endoscopic surgery (TES) has become the most frequently employed surgical technique to treat sinonasal malignancies. The rarity and heterogeneity of sinonasal cancers have hampered large non-population-based analyses. METHODOLOGY: All patients receiving TES-including treatment between 1995 and 2021 in 5 referral hospitals were included. A prognostic study was performed, and multivariable models were transformed into nomograms. Training and validation sets were based on results from 3 European and 2 non-European centres, respectively. RESULTS: The training and validation set included 940 and 420 patients, respectively. The mean age at surgery, primary-versus-recurrent presentation, histology distribution, type of surgery, T category and type of adjuvant treatment were differently distributed in the training and validation set. In the training set, 5-year overall survival and recurrence-free survival with a 95%-confidence interval were 72.7% (69.5-76.0%) and 66.4% (63.1-69.8%), respectively, significantly varying with histology. At multivariable analyses, age, gender, previous treatment, the extent of resection on the cranial, lateral and posterolateral axes, grade/subtype, T category, nodal status, margin status and adjuvant treatment were all associated with different prognostic outcomes, displaying a heterogeneous significance and effect size according to histology. The internal and external validation of nomograms was satisfactory (optimism-corrected C-index >0.7 and cumulative area under curve >0.7) for all histologies but mucosal melanoma. CONCLUSIONS: Outcomes of TES-based treatment of sinonasal cancers vary substantially with histology. This large, non-population-based study provides benchmark data on the prognosis of sinonasal cancers that are deemed suitable for treatment including TES.

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Olfactory neuroblastoma is a rare tumor. Nasal endoscopy typically identifies a soft mass arising from the olfactory cleft. Computer tomography and magnetic resonance imaging are mandatory for staging (in association with 18F-fluorodeoxyglucose positron emission tomography) in high-grade and/or high-stage tumors. Biopsy must be representative to confirm a diagnosis and for grading purposes. Two complementary classifications are described: one (Kadish) based on clinical-radiological analysis, and the other (Hyams) on histological criteria. Based on Hyams grading, studies have pointed out that grades III-IV entail significantly different behavior and prognosis. A multimodal approach, which may combine surgery, chemotherapy, and radiotherapy, is essential to manage these tumors. Treatment schedules which include surgery seem to be superior to others. Surgery classically consisted of anterior craniofacial resection to obtain good exposure. However, the role of transnasal endoscopic surgery has expanded because of its association with fewer complications, shorter hospital stays, and comparable oncologic results to the open surgical techniques. Unilateral endoscopic craniectomy can be performed for limited lesions to avoid definitive anosmia. Treatment that includes radio- and chemotherapy is recommended for advanced and high-grade tumors. The role of neoadjuvant chemotherapy in advanced-stage lesions is emerging. The main prognostic factors associated with poor patient outcome are Hyams grade III-IV, Kadish C-D, and positive surgical margins. Lifelong follow up is recommended.

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OBJECTIVES/HYPOTHESIS: The objective of this study was to report for the first time on the results of submucosal injections of bevacizumab used in conjunction with cyanoacrylate glue sclerotherapy in hereditary hemorrhagic telangiectasia (HHT). STUDY DESIGN: Retrospective analytic chart review. METHODS: We performed a chart review that included all patients with HHT treated with intranasal bevacizumab and cyanoacrylate glue for refractory epistaxis at Lariboisiere University Hospital from 2013 with a minimum follow-up of 6 months. We injected 100 mg (25 mg/mL) of bevacizumab diluted in 2 mL of serum at the base of the telangiectasias, and sclerotherapy with an injection of cyanoacrylate glue was used adjunctively. Treatment efficacy was based on changes in Epistaxis Severity Scores (ESS) and the Bergler-Sadick Scale. Quality of life and patient satisfaction were evaluated using the Cantril Self-Anchoring Ladder (CL) and Likert scale, respectively. RESULTS: Thirty-one patients were included, with a mean follow-up of 26.6 months. The average ESS score significantly decreased from 7.82 to 3.89 (P < .05). The Bergler-Sadick score significantly improved (P < .05) following the treatment, including the frequency (from 2.74 to 1.64) and the quantity (from 2.54 to 1.51) scales. Quality of life was significantly improved (P < .05) using the CL score (from 4.16 to 7.22). The Likert satisfaction scale related to the treatment efficacy was high, with an average of 7.03 out of 10. No complications were noted. CONCLUSIONS: Submucosal injections of bevacizumab in conjunction with cyanoacrylate glue sclerotherapy significantly reduced epistaxis and improved the quality of life in HHT. Prospective comparative studies are needed to further evaluate the significance of this treatment modality. LEVEL OF EVIDENCE: 3b Laryngoscope, 129:2210-2215, 2019.

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Objective In the management of facial nerve schwannoma (FNS), surgical tumor resection is now often being replaced with more conservative approaches, such as observation with serial imaging or stereotactic radiosurgery (SRS). Given the scarcity of these lesions, determining the optimal management of FNS remains challenging and subject of debate with multiple treatment approaches supported in the literature. Methods A retrospective chart review was performed in two academic centers for patients diagnosed with FNS between 1996 and 2017. The clinical presentation, treatment modalities employed, tumor control rates, and facial nerve function (FNF) outcomes (House-Brackmann system) were assessed and analyzed. Results The study comprised 50 adult patients. Initial treatment modalities included observation with serial clinicoradiologic review in 27 patients (54%), surgery in 17 patients (34%), and SRS in 6 patients (12%). The FNF were decreased in more than half of the patients who had surgery. Nonetheless, more than 80% of the patients who were initially managed with observation or SRS had stable or improved FNF. Conclusion A prevailing trend toward more conservative treatment modalities for FNS has evolved over time, providing relatively long-term preservation of FNF. As there are multiple management options available, it is of paramount importance that the treating physician be familiar with all treatment modalities and outcomes and counsel patients appropriately. The surgery should be reserved for large tumors and poor FNF at initial presentation or follow-up while watchful observation with imaging is the treatment of choice for rest of the patients.

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BACKGROUND: Biofilms are communities of bacteria embedded in a self-produced glycocalyx matrix. Adenoids have been shown to harbor bacterial biofilms. Aim/objectives: To compare the prevalence of biofilms in adenoid of children with chronic otitis media (COM) (group1) versus a control group without any COM (group 2) having adenoids removed because of hypertrophy. MATERIAL AND METHODS: One hundred and three children were prospectively enrolled in this case-control study, group 1 (n = 52) and group 2 (n = 51). The main outcome measurement was the prevalence of biofilm in adenoidectomy specimens analyzed using confocal laser scanning microscopy. Children in group 1 who had middle ear (ME) effusion and requiring the insertion of a tympanostomy tube underwent biopsy of the ME mucosa and effusion sampling. RESULTS: Biofilms were found in adenoids' specimens of both groups and in the ME biopsy and effusion. The biofilm prevalence in adenoids was 63.5% (33/52) in group 1 and 47.1% (24/51) in group 2. Day nursery and previous antibiotics intake were significantly more frequent in group 1 than in group 2. CONCLUSIONS AND SIGNIFICANCE: This case-control study demonstrates that adenoid tissue in children with COM contains more mucosal biofilms than adenoid tissue removed for hypertrophy. Biofilm was seen in ME biopsies and effusion.

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BACKGROUND: Idiopathic sudden sensorineural hearing loss (ISSNHL) is defined as a decline in hearing affecting three or more frequencies by 30 dB Objective: The aim of this study was to evaluate the results of intratympanic steroids as a salvage treatment for severe ISSNHL. MATERIALS AND METHODS: A regimen of three IT steroid injections was offered to patients who failed a 7-days intravenous steroid treatment. Eighty-four patients underwent IT salvage treatment (IT group). Their outcomes were compared with those of 255 patients with severe ISSNHL who received the same intravenous steroid regimen without salvage IT steroid therapy (Control group). RESULTS: 56% of the patients in the IT group had a hearing improvement of >15 dB after one month. The average hearing improvements were 26.5 ± 28 dB and 27.9 ± 24 dB in the IT group and the Control group, respectively (p = .67). However, patients with a type E audiogram pattern (total deafness), displayed a substantial hearing gain. CONCLUSION: Intratympanic steroids failed to show a global auditory benefit as a salvage treatment in patients with severe ISSNHL. SIGNIFICANCE: Our data suggest that a salvage treatment with intratympanic dexamethasone may be offered to patients with total deafness for whom the first systemic treatment has failed.

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The relevance of defining the growth of vestibular schwannoma (VS) is that any significant VS growth may impact treatment strategy. A conservative treatment strategy is often proposed as a primary treatment option in the management of VS. Several authors have demonstrated that a significant proportion of VSs do not grow, and those that do, usually grow slowly. Surgical and/or radiosurgical treatment options may be offered to the patient according to the VS growth. Therefore, defining the VS growth is a determinant in managing treatment strategies. A comprehensive literature search was performed to examine the definition of tumor growth for VS. The literature review was conducted using PubMed and Embase databases dated back to 20 years (1995-2015) and was updated until February 2015. VS growth should be measured on contrast-enhanced T1-weighted images. Although there the overall quality of the present studies is low, all highlight a significant VS growth of > 2 mm, and/or 1.2 cm3, and/or 20% change in volume, and/or the square of the product of the 2 orthogonal diameters. We suggest that VS growth should instead change management strategies when a 3-mm increase in diameter on two consecutive MRI scans are performed 1 year apart.

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BACKGROUND: The purpose of this study was to propose a prognostic classification of intestinal-type adenocarcinoma (ITAC) based on literature search and prognostic modeling of cohort data. METHODS: We first conducted a literature search to assess the homogeneity of the reported estimates of 5-year survival and to identify the influence of T classification. We then pooled prospective data from 3 large French and Italian series to predict time to all-cause mortality. The sample was randomly split to derive and then to validate the proposed prognostic model. RESULTS: Literature analysis confirmed the heterogeneity in 5-year survival rates, partly explained in subsets of homogeneous T-values. The sample included 223 patients, randomly separated into a derivation (n = 141) and a validation set (n = 82). Invasion of the sphenoid lateral and/or posterior walls and dura/cerebral invasion were systematically associated with a poor survival. CONCLUSION: The incorporation of the invasion of the sphenoid lateral or posterior walls should be considered for ITAC management and prognostication. © 2017 Wiley Periodicals, Inc. Head Neck 39: 668-678, 2017.

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