Abstract
Frontal pyocele or mucocele induced by trauma to the frontal sinus area usually develop several years following the incident.
The authors reported three cases of frontal pyocele or mucocele developed 3 to 20 years after trauma to the frontal sinus area and a case of mucocele developed one month after trauma to the radix of nose, which was found incidentally at his visit to the hospital seeking plastic surgery of the external nose.
The authors stated that thorough rhinological examination for possible frontal mucocele or pyocele could not be spared in cases with a history of trauma to the frontal area.
