<prompt> A 5-year-old child with recurrent sinusitis, cause is:AdenoidsAngiofibromaNasal carcinomaAll of the above  <response>: a AdenoidsRef. Scott Brown, Vol 2; 286Because of nasal obstruction the child can have recurrent sinusitis. Angiofibroma and nasopharyngeal carcinoma are not seen at this age. 