Nasal septal hematomas arise from ruptures in the small blood vessels in the nasal septum and are largely secondary to trauma. The nasal septum has a rich vascular supply which sources from both the internal and external carotid arteries.
Septal hematomas appear as isoattenuating or hypoattenuating collections in the nasal septum. They can be uniform or heterogenous in appearance and be found with or without nasal trauma.
- 1. Rodriguez DP, Orscheln ES, Koch BL. Masses of the Nose, Nasal Cavity, and Nasopharynx in Children. RadioGraphics. 2017 Oct 11;37(6):1704-30.