This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Musculoskeletal Radiology, Subject name: Radiology
Positive metacarpal sign is seen in? 
Select and explain. 
A. Downs syndrome, B. Marfans syndrome, C. Turners Syndrome, D. Klienfelters Syndrome
C: Turners Syndrome
Answer: C: Turners Syndrome 
Explanation: - Sho 4th Metacarpal is called Positive Metacarpal sign is seen with Turners syndrome. It can be seen as a normal variant also.