<unk>  is a rare disease with a bimodal distribution based on age of incidence. The incidence, or number of new cases, of<unk>  cases is at approximately 4.3 cases per 100 000 children and 1.8 cases per 100 000 adults annually. The incidence of<unk>  in children peaks before the age of 5, though the term juvenile<unk>  refers to all cases occurring before the age of 20. The incidence of adult<unk> , which has an onset after the age of 20, peaks between the ages of 20 and 40. While there are no gender differences in the incidence of<unk>  in children, adult<unk>  occurs more frequently in males than in females. The incidence of<unk>  also varies according to factors such as socioeconomic status, such that higher rates are observed in groups having a lower socioeconomic status.
Laryngeal papillomatosis
Laryngeal cyst
Otic polyp
Oral mucocele
Nasopharyngeal cyst
Epiglottitis
Vulvitis
Tuberculous gumma