This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiratory system, Subject name: Anatomy
Clubbing is the least common in 
Select and explain. 
A. Squamous cell carcinoma, B. Small cell carcinoma, C. Adenocarcinoma, D. Mesothelioma
B: Small cell carcinoma
Answer: B: Small cell carcinoma 
Explanation: Skeletal connective tissue syndrome including clubbing is usually not seen in small cell carcinoma. Ref Harrison 19th edition pg 250