A 10-Year-Old Girl Is Brought to the Emergency Department Due

A 10-year-old girl is brought to the emergency department due to right ear pain.  She was participating in a martial arts competition this afternoon when her opponent struck her on the right side of the head.  The patient has had no discharge from the ear canal and no hearing loss, rhinorrhea, or vertigo.  She has no chronic medical conditions and takes no medications.  Blood pressure is 110/70 mm Hg and pulse is 92/min.  The patient is awake, alert, and appears in moderate pain.  The face has normal contours with no point tenderness.  The pupils are equal and reactive to light; extraocular movements are intact.  There is erythema and a 2.5-cm (1-in) hematoma overlying the superior antihelix of the right pinna.  The right pinna is tender to light touch, and manipulation of the pinna is painful.  Scant dried blood is noted at the external auditory meatus.  Bilateral tympanic membranes are clear.  The mastoid process is nontender and has no bruising.  The patient's parents ask if there is anything else that needs to be done for the hematoma.  Which of the following is the most appropriate statement regarding management of this patient?

A) "Auricular hematomas usually resolve by themselves.  Take ibuprofen, apply ice, and follow-up in a week."
B) "The hematoma needs to be evacuated now to prevent a permanent deformity."
C) "There is a risk for associated hearing loss, so we should perform audiometric testing."
D) "This hematoma will resolve without treatment; however, I will prescribe antibiotics to prevent infection."