[Operative treatment of subacute unilateral frontal sinusitis].

If in the treatment of acute frontal sinusitis drilling a hole according to Kümmel-Beck does not promote the complete healing of the diseased sinus, an enlarged opening of the sinus according to Ogston with resection of the interfrontal septum has proved valuable. This admits air to and ensures sufficient drainage from the afflicted sinus. The procedure is simple, can be performed under local anaesthesia.