A septal hematoma is an abnormal collection of blood or fluid within the septal tissue and is usually seen after trauma or surgery. Any minor blood vessels that ooze or bleed in this well vascularized region can lead to a hematoma. Once discovered, it is mandatory to evacuate and remove this blood via serial needle aspirations and packing or surgery, to avoid any more serious complications (infection, septal perforation, etc.). Fortunately, appropriate management of septal hematoma usually results in a good outcome. Glad yours was discovered early and treated aggressively. Hope this answer helps to explain.