Figure 3.

Type B—Illustrative case: a 45-year-old woman with fracture of anterior and posterior wall of the frontal sinus due to a frontal trauma in a car accident. (a) Axial computed tomography scan shows combined fractures of anterior and posterior walls of the frontal sinus (white arrows) with signs of pneumocephalus (black arrow); (b) intraoperative findings: fractures of the anterior wall of the frontal sinus; (c) wide exposition of the frontal sinus before its cranialization; (d) final surgical field; fractures were treated with microplates and screws.