[Surgical treatment of the pneumosinus dilatans of the frontal sinus (author's transl)].

Two cases of pneumosinus dilatans of the frontal sinus with cosmetic deformation are reported. In both cases one big hole without any interfrontal septum has been found. In the first case no efferent ducts of the frontal sinus have been visible, the second one showed only one. Surgical treatment by incision from ear to ear, and forming of a scalp flap with opening of the frontal sinus in the upper margin of the bony bulging. This bulging was left pedicled on the periosteum and fractured in many pieces. Forming of an artificial efferent duct to the nose by an incision below the left eyebrow. Good cosmetic results in both cases. X-rays fotos, pictures of the operation and postoperative results are demonstrated. Examinations of the human growth hormones (HGH) of the 24-years-old German and the 28-years-old Turkish man presented normal values. The author believes in a dysregulation of the efferent ducts.