Complex sentence: Because the septal cartilage has no blood supply of itself and receives all of its nutrients and oxygen from the perichondrium, untreated septal hematoma may lead to destroyal of the septum.
Split into simpler sentences: Because the septal cartilage has no blood supply of itself and receives all of its nutrients and oxygen from the perichondrium. An untreated septal hematoma may lead to destruction of the septum.