The lump that you are describing is consistent with an
aural hematoma, which is an accumulation of blood between the skin and cartilage of the ear. In some cases, removal of the blood by syringe can be helpful, but in many cases the blood just fills up again, and in these cases surgery is usually required to prevent recurrence of the hematoma. Untreated, the blood will slowly be resorbed by the body, leaving a crinkled, scarred ear.