High prevalence of long-term olfactory, gustatory, and chemesthesis dysfunction in post-COVID-19 patients: a matched case-control study with one-year follow-up using a comprehensive psychophysical evaluation.

BACKGROUND: Using an age and gender matched-pair case-control study, we aimed to estimate the long-term prevalence of psychophysical olfactory, gustatory , and chemesthesis impairment at least one year after SARS-CoV-2 infection considering the background of chemosensory dysfunction in non-COVID-19 population. METHODOLOGY: This case-controlled study included 100 patients who were home-isolated for mildly symptomatic COVID-19 between March and April 2020. One control regularly tested for SARS-CoV-2 infection and always tested negative was matched to each case according to gender and age. Chemosensory function was investigated by a comprehensive psychophysical evaluation including ortho- and retronasal olfaction and an extensive assessment of gustatory function. Differences in chemosensory parameters were evaluated through either Fisher’s exact test or Kruskal-Wallis test. RESULTS: The psychophysical assessment of chemosensory function took place after a median of 401 days from the first SARS-CoV-2 positive swab. The evaluation of orthonasal smell identified 46% and 10% of cases and controls, respectively, having olfactory dysfunction, with 7% of COVID-19 cases being functionally anosmic. Testing of gustatory function revealed a 27% of cases versus 10% of controls showing a gustatory impairment. Nasal trigeminal sensitivity was significantly lower in cases compared to controls. Persistent chemosensory impairment was associated with emotional distress and depression. CONCLUSION: More than one year after the onset of COVID-19, cases exhibited an excess of olfactory, gustatory , and chemesthesis disturbances compared to matched-pair controls with these symptoms being associated to emotional distress and depression.

Self-reported alteration of sense of smell or taste in patients with COVID-19: a systematic review and meta-analysis on 3563 patients.

BACKGROUND: Emerging reports suggest that new onset of smell or taste loss are potential early clinical markers of SARS-CoV-2 infection, but it remains unclear as to what extent. Therefore, the purpose of this study is to systematically assess the prevalence of self-reported altered sense of smell or taste in patients with confirmed SARS-CoV-2 infection, overcoming the limitations of individual studies by meta-analysis of pooled data. METHODS: The databases Medline, Embase, Web of Science, Scopus and MedRxiv's set were searched from inception to the 4th May 2020. This study was conducted following the PRISMA checklist. RESULTS: 18 studies met the eligibility criteria out of the 171 initially screened citations. The overall prevalence of alteration of the sense of smell or taste was 47% , but estimates were 31% and 67% in severe and mild-to-moderate symptomatic patients, respec- tively. The loss of smell and taste preceded other symptoms in 20% of cases and it was concomitant in 28%. CONCLUSIONS: Based on this meta-analysis, we recommend self-isolation and testing, where possible, for patients complaining smell or taste impairment during COVID-19 pandemic in order to prevent spread of disease and propose the inclusion of loss of smell and taste as recognized symptoms of SARS-CoV-2 in the World Health Organization and other relevant regulatory body's lists.

Predominance of an altered sense of smell or taste among long-lasting symptoms in patients with mildly symptomatic COVID-19.

There is mounting evidence that a new onset of altered sense of smell or taste is related to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. In order to allow patients to recognize symptoms indicative of SARS-CoV-2 infection and self-isolate at the earliest opportunity, self-reported loss of smell and taste have greater value in controlling disease transmis- sion than psychophysical testing, which is not widely available outside of highly specialized clinics.

Surgical management of acquired anterior glottic web: a systematic review.

BACKGROUND: Acquired anterior glottic web poses a significant challenge to laryngologists given its propensity to recur following treatment, and there are a wide variety of described techniques. METHODS: A systematic review of the medical literature was undertaken in order to identify all articles pertaining to the management of acquired anterior glottic web. RESULTS: Thirteen studies meeting the inclusion criteria were identified and analysed. All were retrospective series, with varying surgical techniques and outcome measures. Only two studies reported on the use of topical mitomycin C. CONCLUSION: Mucosal graft techniques and keel placement appear to improve success rates, but both carry risks and disadvantages. Based on the available evidence, the use of topical agents such as mitomycin C cannot be recommended in the management of acquired anterior glottic web.

Speech perception in noise by young sequential bilingual children.

The objective of this study was to ascertain the effects of competitive noise on second language perception skills of sequentially bilingual children and to compare the results with those relating to matched monolingual peers. Fifteen bilingual immigrant children (aged 6-10 years) (BL) learning through their second language (L2), which was Italian, were matched with 15 peers who only spoke Italian (IO). All immigrant children had arrived in Italy and were exposed to L2 after their 4th year of life. The speech-to-noise ratio (SNR) needed to obtain 50% intelligibility - the speech reception threshold (SRT) - for Italian words was measured against the Italian version of ICRA noise, using an adaptive method. Moreover, presentation of phrases against a contralateral continuous discourse (informational masking) was carried out to exclude possible biases due to differences in memory, attention, or other central auditory processing disorders between groups. The SNR was -2.7 dB (SD 1.7; range: -5.5 to + 0.9) for the BL group and -5.3 dB (SD 2.3; range: -8.8 to -0.9) for the IO group (p < 0.01). With contralateral continuous discourse presentation the SNR were -32.8 dB (SD 2.4; range: -36.1 to -28.2) for the BL group and -27.8 dB (SD 2.1; range: -31.7 to -24.1) for the OI group (p < 0.01). Even sequential bilingual individuals exposed to L2 at 4 years old had worse speech perception in noise than their matched IO peers. On the other hand, the BL group demonstrated superior divided attention skills in tests with competitive contralateral discourse (p < 0.01).

Endolymphatic sac tumour in von Hippel-Lindau disease: management strategies.

Endolymphatic sac tumour (ELST) is infrequent, as emerges from small series reported in the literature. It is a slow-growing malignancy with local aggressiveness and a low risk of distant metastases. It is often misdiagnosed because of the late onset of symptoms and difficulty in obtaining a biopsy. Its frequency is higher in von Hippel-Lindau (VHL) disease (a genetic systemic syndrome involving multiple tumours), with a prevalence of around 25%. The diagnosis is based on radiology, with specific patterns on contrast-enhanced MRI and typical petrous bone erosion on bone CT scan. Our experience of ELST in the years between 2012-2015 concerns 7 cases, one of which was bilateral, in patients with VHL disease. Four of the 7 patients underwent 5 surgical procedures at our institution. Each case is described in detail, including clinical symptoms, and the intervals between symptom onset, diagnosis and therapy. Postoperative morbidity was low after early surgery on small tumours, whereas extensive surgery for large tumours was associated with loss of cranial nerve function (especially VII, IX, X). The critical sites coinciding with loss of neurological function were the fallopian canal, jugular foramen, petrous apex and intradural extension into the posterior cranial fossa. Early surgery on small ELST is advocated for patients with VHL disease, in whom screening enables a prompt diagnosis and consequently good prognosis.

Transnasal endoscopic management of anterior cerebrospinal fluid (CSF) leak: experience from a large case series.

Transnasal endoscopic management of anterior cerebrospinal fluid (CSF) leak: experience from a large case series. OBJECTIVES: Anterior cerebrospinal fluid (CSF) leak is a consequence described after head trauma, skull base surgery or inflammatory diseases, but may also occur spontaneously. Prompt recognition and management is crucial in order to avoid complications and to achieve successful surgical repair. The purpose of this study is to present the clinical features of a large group of patients with anterior CSF leak and the results of their surgical management. METHODOLOGY: The study approach was a retrospective review of 110 consecutive patients treated by the same surgeon for CSF leak of the anterior skull base via a transnasal endoscopic approach between 2003 and 2013. Patients with anterior skull base surgery due to cancer or pituitary adenoma were excluded from this study. The diagnostic workup included nasal endoscopy, beta2-transferrin and -trace protein assay in the rhinoliquorrhoea and radiological imaging. The intrathecal fluorescein test was performed in selected cases. The surgical techniques used to repair dural defects were primarily middle turbinate placement and fascia lata grafting. RESULTS: Primary endoscopic repair of the CSF fistula was successful in 106/110 (96.4%) patients. Four patients (3.6%) required a revision procedure due to early failure of the repair. After a minimum follow-up of 24 months, no recurrent CSF leaks were observed in the study group. None of the patients developed meningitis as a surgical complication. CONCLUSIONS: The endoscopic transnasal approach is a reliable technique for treating CSF leaks. The intrathecal fluorescein test is safe and helpful in locating the defect. The fascia lata proved the best graft available in our experience.

Nasopharyngeal thyroid-like low-grade papillary adenocarcinoma.

OBJECTIVE: Epistaxis is extremely common in children. Although rare, the presence of an intranasal mass as a cause of bleeding should be ruled out in patients with recurrent or massive epistaxis. We present a patient whose recurrent nose-bleeding had been due to a nasopharyngeal mass. METHODS: Case report with relevant literature review. RESULTS: A 15-year-old girl with a history of sudden posterior nasal bleeding was diagnosed with thyroid-like low-grade nasopharyngeal papillary adenocarcinoma of the nasopharynx. A type II nasopharyngeal endoscopic resection was performed with an excellent outcome at 30-months follow-up. The literature review on the topic disclosed only five other paediatric cases, none of which presented with epistaxis. CONCLUSIONS: Recurrent epistaxis may infer the presence of nasopharyngeal malignant neoplasms, even in children. To our knowledge, this represents the sixth case in the literature of a paediatric low-grade nasopharyngeal adenocarcinoma and the first presenting with massive epistaxis. The possibility of such a finding should be kept in mind when evaluating children with massive epistaxis.

Endoscopic repair of cerebrospinal fluid leak in paediatric patients.

BACKGROUND: In scientific literature exist fewer case series regarding endoscopic treatment of paediatric cerebrospinal fluid fistulas. Compared to craniotomy endoscopic repair does not reach wider consent even if craniotomy carries higher complications rate. OBJECTIVE: The aim of the present study was to report our institutional experience on paediatric cerebrospinal fluid leak to demonstrate the safety and efficacy of the endoscopic approach in a variety of cases. METHODS: Clinical records of all paediatric patients who underwent endoscopic repair of anterior and middle fossa skull base defects are reviewed for several parameters. RESULTS: 10 patients were enrolled, 6 males and 4 females with a mean age of 10 years. The aetiology of the leak was congenital in 2 cases, trauma-induced in 6 cases and iatrogenic in 2 cases. In all the cases the defect was localized by computed tomography. Remedial was obtained using multiple grafts technique with autologous materials during a single procedure in all but one case, this one case requiring a second operation for delayed recurrence. The mean follow-up duration is 36 months. CONCLUSION: CSF fistulas can be approached in paediatrics of any age with high success and low complications rate using the endonasal technique.