As the result of a blow, an extravasation of blood takes place beneath the Perichondrium on each side of the septum, and a bilateral, symmetrical swelling, smooth in outline and covered with mucous membrane, is visible immediately within the anterior nares.
"Manual of Surgery Volume Second: Extremities--Head--Neck. Sixth Edition."
Alexander Miles Alexis Thomson
When the Perichondrium becomes invaded, necrosis of cartilage is liable to occur.
"Manual of Surgery Volume Second: Extremities--Head--Neck. Sixth Edition."
Alexander Miles Alexis Thomson