TY - CHAP M1 - Book, Section TI - External Ear Injuries A1 - Stark, Christopher L. A2 - Knoop, Kevin J. A2 - Stack, Lawrence B. A2 - Storrow, Alan B. A2 - Thurman, R. Jason Y1 - 2021 N1 - T2 - The Atlas of Emergency Medicine, 5e AB - Injuries to the external ear may be open or closed. Blunt external ear trauma may cause a hematoma (otohematoma) of the pinna, which, if untreated, may result in cartilage necrosis and chronic scarring or further cartilage formation and permanent deformity (“cauliflower ear”). Open injuries include lacerations (with and without cartilage exposure) and avulsions. SN - PB - McGraw-Hill CY - New York, NY Y2 - 2024/10/10 UR - accessemergencymedicine.mhmedical.com/content.aspx?aid=1181038122 ER -