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This meta-analysis aims to investigate the outcome of sinonasal adenoid cystic carcinoma (snAdCC). We followed PRISMA guidelines and included studies reporting 5-year overall survival (OS) rates for snAdCC. Eligible studies were identified through a literature search and assessed using JBI critical appraisal checklist. A total of 17 studies were included comprising 2259 patients (mean age: 58.1 years, 52.7% female, 47.3% male). The meta-analysis demonstrated that the 5-year OS, 10-year OS, and 5-year disease-free survival (DFS) were 68%, 40%, and 47.2%, respectively. Descriptive statistics on study level showed high rates of locally advanced tumor stages at diagnosis: 23% cT3, 53% cT4, 3.4% N+, and 4.2% M+. 29.7% of the tumors were in the nasal cavity, 67.6% in the paranasal sinuses. The maxillary, ethmoid, sphenoid, and frontal sinus were affected in 50.9%, 7.2%, 4%, and 0.5%, of cases. A combination of surgery and radiotherapy was used in 45.4% of the patients and 19.3% of patients received surgery only. In conclusion, these findings emphasize the significance of thorough surveillance for individuals with snAdCC to identify any potential recurrence or progression of the disease.

Background: Aim was to analyse the role of PD-L1 in squamous cell carcinomas of the nasal vestibule. Advanced squamous cell carcinoma of the nasal vestibule is a highly aggressive tumour. The role of PD-L1 expression is unclear in this tumour type., Methodology: Forty-six patients diagnosed between 1995 and 2014 were analyzed. Baseline characteristics and outcome were correlated to immunohistochemical staining of PD-L1. PD-L1 positivity of tumour cells and tumour infiltrating immune cells (TIIC) was defined by any staining of more than 1% of the tumour cells., Results: PD-L1 expression was interpretable in 31 of 46 patients (67.4%). PD-L1 positivity was present in 14 (45.2%) patients tumour cells and 17 (54.8%) patients TIIC. PD-L1 positivity of tumour cells was associated with a favourable disease free survival (p=0.019)., Conclusions: Positivity for PD-L1 in tumour cells is a prognostic factor in squamous cell carcinoma of the nasal vestibule and might enable a patient-tailored treatment.

Objective: To determine the incidence of occult cerebrospinal fluid leaks (CSF) after functional endoscopic sinus surgery (FESS) and to evaluate the diagnostic performance of beta2-transferrin in blood-contaminated conditions., Study Design: Prospective cohort study., Methods: An analysis of 57 intraoperative samples using hydrogel 6 beta2-transferrin assay after FESS was undertaken. In case of CSF positive samples and continuing rhinorrhea, reanalysis after more than 1 year was conducted. In-vivo analysis of a primary spontaneous CSF leak sample took place to verify difficulties in detecting beta2-transferrin in blood-contaminated settings. Own titrations were performed to evaluate detection limits of CSF by beta2-transferrin and beta-trace protein assays in these settings., Results: An incidence of 13% for occult CSF leaks after FESS was found. In blood-contaminated conditions, routine beta2-transferrin assays showed low sensitivity. In over 1 year follow-up, all samples were negative for CSF and none of them developed clinical relevant CSF leaks or meningitis., Conclusion: Occult and clinically irrelevant CSF leaks do occur in a significant proportion of patients during and shortly after FESS. Intra- and postoperatively, routine beta2-transferrin assays show low sensitivity. They should not be used in these settings. The clinical course of patients with occult CSF leaks indicated possibility of an uneventful follow-up.

Background: Rhinoplasty represents one of the most challenging and frequently performed procedures in plastic surgery and non-surgical rhinoplasty is rarely considered. The aim of this study was to investigate whether the Nasella Nose Former (NNF), a newly developed non-surgical rhinoplasty device, could improve objective and subjective results following surgical rhinoplasty and even correct the shape of the nose without any surgery at all., Methodology: In this prospective, monocentric, two-armed, non-blinded randomized, controlled clinical trial, a total of 43 participants were included. In the Surgical group, 22 patients undergoing open or closed rhinoplasty with osteotomies were randomised based on their birth year; 15 of them got to wear the NNF over 8 weeks postoperatively and 7 patients getting surgery without the NNF formed the control group. In the Cosmetic group, 21 participants wore the NNF without surgery over 14 months. At every follow-up exam, angles for crookedness, nasal hump and width were measured, the investigator assessed the patients nose and asked for patient satisfaction using a Likert-scale., Results: Patients in the Surgical group wearing the NNF did not show any significant difference concerning objective measurements, investigator assessments and patient satisfaction compared to those not wearing the NNF. In the Cosmetic group, participants did not show objective improvements in measurements and investigator assessment. However, participants were significantly more satisfied after 14 months with their nasal back, nasal axis and outer nose in general., Conclusions: Considering the results of this study, we conclude that this perfectly customised external device to enhance surgical rhinoplasty outcomes or correct the shape of the nose without surgery does not seem to be effective and that further investigations in this field are not meaningful.

Objective: Several surgical techniques have been suggested for the treatment of nasal dermal sinus cysts (NDSC). We have used several different techniques and have developed a minimally invasive approach. The aim of this study is to describe the evolution to this approach and compare the results with those achieved with our experience of more traditional techniques., Methodology/principal: A retrospective data collection of patients with NDSC presenting to our clinic between 1998 and 2012 was performed. We initially performed external approaches as outlined elsewhere. With an increasing number of young children requiring surgery, the technique was modified to a less invasive form. This new approach starts with mobilisation of the pit via a tiny skin incision. An open rhinoplasty approach is used to follow the fistula on the nasal bone. Once the fistula passes underneath the nasal bone, an endoscopic endonasal approach is used. Following the fistula cranially, the area of the foramen caecum can be identified., Results: Twelve out of 15 patients (80%) were treated surgically. The transfacial, coronal subcranial and minimally invasive approach was used in 3 (25%), 4 (33%) and 5 patients (42%), respectively. Radical resection was achieved in all patients. Cosmetic problems were present in all patients undergoing a transfacial and in half of the patients after the coronal subcranial approach. Patients treated by the minimally invasive technique remained without sequelae., Conclusion: The minimally invasive approach enables a perfect exposure of the fistula up to the crista galli and provides less morbidity and better cosmetic results than the transfacial and subcranial approach.

Objective: Spontaneous cerebrospinal fluid (CSF) rhinorrhoea is a separate clinical entity with elevated intracranial pressure as its most probable pathophysiological mechanism. Having the clinical impression of distinct courses of diseases in primary spontaneous (PS) compared to secondary CSF rhinorrhoea, our objective was to identify whether the two forms differ in the duration of CSF rhinorrhoea and the incidence of meningitis., Methods: Chart review performed on all patients referred with a CSF leak to our tertiary-care medical center over a 20-year period from 1990 to 2010., Results: In total, 58 cases suffering from CSF rhinorrhoea could be included. The aetiology was primary spontaneous in 23 (40%) and secondary in 35 (60%) patients. The duration of CSF rhinorrhoea was notably longer in patients with PS CSF rhinorrhoea. Moreover, we could show a significantly lower incidence of meningitis with PS CSF rhinorrhoea compared to the secondary group (annual incidence of 0.12 vs. 1.22 episodes)., Conclusion: A significantly lower incidence and delayed onset of meningitis in patients suffering from PS CSF rhinorrhoea could be explained by an elevated intracranial pressure that hinders the ascension of bacteria. The closure of a leak in secondary CSF fistula seems more urgent than in PS CSF fistulas.

Background: Epistaxis represents one of the most common emergencies in ENT clinics around the world. It creates great physical and emotional stress to the patient as well as a financial burden on health-care systems. A lot of research has been performed with regard to aetiology and possible treatment, however, not much effort has been put into analysing the effectiveness of common treatment forms. It is the objective of this study to clarify which of these treatment forms is reliable., Study Design: Retrospective cohort study., Level of Evidence: 2b., Methods: Between 03/2007 and 04/2008, all epistaxis therapies including relapses and treatment failures at the University Hospital of Zurich have been documented using a computerised questionnaire. Different treatments were compared to each other., Results: An analysis of 678 interventions in 537 patients was performed with emphasis on failure proportions and time to occurrence. The estimated failure proportions of coagulation in anterior epistaxis accounts for 14%. Successful treatment of epistaxis in posterior bleedings could be achieved in 62% by packing and in 97% by surgery with a statistically significant difference between the respective groups., Conclusion: Using our treatment options, anterior epistaxis can be cured reliably by cauterisation. Surgical therapies in posterior bleedings are able to successfully salvage failed packing therapies.

Background: With the event of angled endoscopes, image guidance and the rapidly improving endoscopic techniques the previously used osteoplastic frontal sinus fat obliteration (ISO) becomes more and more a second line treatment option. The objective of our study is to describe the up-to-date indications for FSO based on our own experience., Methods: Retrospective analysis including follow-up visits of 77 patients with frontal sinus fat obliteration at our clinic between 1991 and 2006 was undertaken and descriptive statistics were drawn., Results: Thirty-six cases were operated by FSO as a first-line treatment, 41 had previous surgery. Eighty percent of all patients showed no postoperative residual complaints. Two patients required revision surgery. General complication rate was 36.4%, however these consisted in the vast majority of cases (90%) of minor complications., Conclusions: FSO still remains a valuable operation for specific indications. FSO is the gold standard for repeatedly failed endoscopic procedures. The operation should also target the following indications as a first-line treatment: large/lateral osteomas, malignant disease, lateral mucoeceles, most fractures of the posterior sinus wall with CSF-leak, osteomyelitis, pathologies in small underdeveloped sinuses with narrow floor. It is associated with minimal complications and a good outcome.

Nasal midline masses of ectodermal origin include nasal dermoids (ND) and nasal dermal sinus cysts (NDSC). NDSC are characterized by an intracranial-extradural extension, while ND are limited to the nasal dorsum, medial canthus, or glabella without intracranial extension. We report our experience in 11 NDSC patients. The goal of this study is to present the management including surgical technique for NDSC and compare it with the literature. Because a transfacial approach for NDSC with vertical incision caused visible scarring in two out of three patients, we applied a new surgical approach in four patients. This approach consisted of a simple excision and mobilisation of the pit while the proximal part is resected using a coronal transfrontal approach. The relation of the nasal fistula to the nasal bone is essential considering osteotomy. Disruption of the bony cartilaginous junction of the nasal dorsum must be prevented to avoid later growth impairment of the nose. There was no recurrence of NDSC in all 7 operated patients after a mean follow-up of 3.9 years (range 0.5-7.2 years).

Objective: The optimal surgical treatment for patients with posterior epistaxis and failed conservative therapy is unknown. Therefore we planned a systematic review studying all available publications assessing the effect on bleeding recurrence and postoperative complications of ligation of the internal maxillary artery or the sphenopalatine artery., Methods: We searched the electronic databases Medline, Medline In Process, and Cochrane Library. Data extraction was performed following standard methods., Results: Twenty-eight studies could be included in the systematic review. All studies were retrospective and no single study comparing different methods could be identified. Fifteen studies reported on the effect of the ligation of the internal maxillary artery (LIMA) and 13 on the effect of the ligation of the sphenopalatine artery (LSA). The severity of postoperative complications and duration of hospital stay seem to be lower in the LSA group. A conclusive statement about the frequency of rebleeding in the two groups is not possible., Conclusion: According to the available data on postoperative complications and duration of hospital stay ligation of the sphenopalatine artery compared favourably to the ligation of the internal maxillary artery. The most effective treatment for patients with posterior epistaxis including costs should be evaluated in a controlled clinical trial.