Abstract:Here, we present a review of the development of paranasal sinuses and pathologies associated to them, allergic and/or infectious sinusitis, in children. A review of 200 medical records of children and adolescents affected with respiratory disease is carried out. 66 patients (33%) were diagnosed with sinusitis, six of which did not present any other respiratory processes. Of the remainder, association with rhinitis, asthma, or wheezy bronchitis, and one case with immune deficiency, was found. Other associated pathologies, such as cystic fibrosis, bronchiectasis, and other processes described as associated with sinusitis, were not detected in any case.