Clinical and Epidemiological Features of Pediatric COVID-19: A Retrospective Study.

Background And Aims: There is a demand for additional data regarding the impact of coronavirus disease 2019 (COVID-19) on the pediatric population. This study sought to determine the clinical and epidemiological features of pediatric COVID-19 in Iran.

Methods: A retrospective study was performed to assess medical records of children with COVID-19 admitted to Abuzar Hospital in Ahvaz (Iran).

A case series of ten plus one deficiency of adenosine deaminase 2 (DADA2) patients in Iran.

Background: Deficiency of adenosine deaminase 2 (DADA2) is an autosomal recessive autoinflammatory disease caused by mutations in the ADA2 gene. DADA2 has a broad spectrum of clinical presentations. Apart from systemic manifestations, we can categorize most of the signs and symptoms of DADA2 into the three groups of vasculitis, hematologic abnormalities, and immunologic dysregulations.

Association of vitamin D status with COVID-19 disease severity in pediatric patients: A retrospective observational study.

Background And Aims: Vitamin D deficiency is associated with increased vulnerability to respiratory infections. This study aimed to determine the potential relationships between coronavirus disease 2019 (COVID-19) severity, serum vitamin D concentrations, and some inflammatory markers among pediatric COVID-19 patients in Iran.

Methods: A retrospective study was conducted among hospitalized pediatric COVID-19 cases in Abuzar Hospital (Ahvaz, Iran) for 6 months.

The role of inflammatory mediators in the pathogenesis of periodic fever, aphthous stomatitis, pharyngitis and cervical adenitis (PFAPA) syndrome.

Introduction: As a recurrent disease, periodic fever, aphthous stomatitis, pharyngitis, and cervical adenitis (PFAPA) syndrome is characterized by episodes of febrile attacks and is often prominent in children under five years of age. However, the etiology of this condition has not been fully understood yet.

Materials And Methods: The search in the extensive literature of peer-reviewed articles published from the inception to December 2021 was conducted to identify the relevant studies, using the electronic databases of MEDLINE/PubMed, Embase, Scopus, the Cochrane Library, and the Web of Science.

Surgical complications of endoscopic approach to skull base: analysis of 584 consecutive patients.

Purpose: Endoscopic techniques have been widely applied for challenging cranial base surgeries in recent years. In this study, we evaluated the safety and efficacy of using the endoscopic endo-nasal route for various skull base pathologies in terms of postoperative complications.

Methods: A total of 584 consecutive patients who underwent endoscopic skull base surgery were studied.