“…This is thought to be due to high vascularity of the diploic venous system, and the accelerated growth of the frontal bone at this particular age [6], [7], [8]. The most common factors leading to PPT are frontal sinusitis and trauma [9]. Other rare etiologies include hematogenous spread of sinusitis, retrograde thrombophlebitis through the diploic veins, or even an insect bite [10], [11].…”