[A iatrogenic case of foreign body in the frontal sinus].

The authors show a case of long behinding iatrogenic foreign body in frontal sinus, which in spite of over twelve years recurrent pain syndromes hasn't diagnosed and treated. Pay attention to great weight of surveyform and stratiform radiological investigations in foreign body diagnostic. The patient has been operated with retirement syndromes. After operation we have settled supposed causes leaving foreign body in frontal sinus.