"This pathology develops when blood accumulates between the cartilage and perichondrial soft tissue, disrupting the blood supply to the cartilage and leading to calcifications and fibrosis 1."
"Auricular haematomas, if treated with proper dressing and in some cases drainage, soon after the pathogenic trauma, should not progress to cauliflower ear. Once a cauliflower ear has formed, surgery may be required to repair the damaged cartilage, for calcification extraction, and to restore the ear's normal appearance2."