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: Pediatrics
True regarding crohn\'s disease are A/E – 
Select and explain. 
A. Scleroderma, B. Transmural involvement, C. Cobble stone appearance, D. Skin involvement
A: Scleroderma
Answer: A: Scleroderma 
Explanation: The skin involvement in Crohn's disease causes erythema nodosum, scleroderma does not occur in Crohn's disease.
Other extraintestinal manifestations of Crohn's disease:


Migratory polyarthritis                                                                                                                                                        
Uveitis 
Clubbing 
Sacroiliitis
Hepatic pericholangitis    
Renal stones (uric acid & oxalate)
Ankylosing spondylitis
Primary sclerosing cholangitis