Nasopharyngeal versus nasal swabs for detection of SARS-CoV-2: a systematic review.

Nasopharyngeal swabbing (NPS) coupled with RT-PCR is the current gold standard for detecting SARS-CoV-2 infections. However, numerous studies have recently demonstrated the advantages of alternative nasal specimen collection approaches over NPS specifically for COVID-19 diagnosis. The present review was conducted according to PRISMA guidelines and summarises the current literature to give a clear overview of nasal specimen collection methods for SARS-CoV-2 detection. Publications investigating NPS and at least one other form of nasal specimen collection in combination with RT-PCR for viral detection in the context of COVID-19 were assessed. We identified 425 articles and ultimately included 18 studies in this systematic review. The suitable publications evaluated different forms of nasal specimen collection, with anterior nasal swabbing (ANS) and midturbinate swabbing (MTS) being the most frequently examined techniques. The analysed studies report sensitivity and specificity results (67.5-96.2% and 97.9-100.0%, respectively) similar to those achieved via NPS, especially in the early stages of disease or when paired with an oropharyngeal swab. Results from these studies suggest that ANS and MTS are suitable alternatives to NPS for COVID-19 testing. Due to their ease of collection, ANS and MTS collection techniques may facilitate broader testing strategies and allow for economization of medical staff.

Congenital cholesteatoma in siblings.

INTRODUCTION: The exact aetiology of congenital cholesteatoma, the less common form of this destructive disease, is still under debate. CASE REPORT: A two-year-old boy was referred to paediatric otolaryngology with persistent, bloody, left-sided otorrhoea refractory to oral and ototopical antibiotics. Prior to its onset at age 16 months, all ear examinations on the affected side were normal. Physical examination, imaging with computed tomography and eventual tympanomastoidectomy revealed extensive cholesteatoma. The extent of the disease, age at onset of symptoms and absence of otological disease before initial presentation suggested the diagnosis of congenital cholesteatoma. Review of the family history revealed that the patient's older brother had undergone tympanomastoidectomy for a small, well-encapsulated, mesotympanic congenital cholesteatoma at two years of age. DISCUSSION: This case joins a single, previous report describing congenital cholesteatoma in multiple family members, suggesting that in some cases, hereditary factors may play a role in the formation of the disease.