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: Orthopaedics
All are true of Dupuytren's contracture except - 
Select and explain. 
A. Usually 4th finger is involved, B. Bilateral disease is rare, C. Surgical release is useful, D. May be associated with Pyronie disease
B: Bilateral disease is rare
Answer: B: Bilateral disease is rare 
Explanation: Often both hands are affected (Bilateral disease), one more than the other.
The earliest sign is a small thickened nodule in the mid-palm opposite the base of ring finger.
Gradually this extends distally to involve the ring or little finger.
There is a rare, curious association with fibrosis of the corpus Cavernosum.