This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: ENT
Cauliflower ear is: 
Select and explain. 
A. Keloid, B. Perichondritis in Boxers, C. Squamous cell carcinoma, D. Anaplastic cell carcinoma
B: Perichondritis in Boxers
Answer: B: Perichondritis in Boxers 
Explanation: Cauliflower ear may occur when blood that collects in the outer ear after an injury isn't drained properly or becomes infected. Common causes include injuries from spos, such as wrestling, boxing, rugby or mixed maial as. If the initial injury is ignored, cailage in the outer ear may then overgrow, resulting in a bulbous deformity on the ear. Plastic surgery is necessary to restore the ear's shape.