This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Skin Cancer, Subject name: Skin
Which of the following is the most common initial site of metastasis from a primary BCC? 
Select and explain. 
A. Lungs, B. Regional lymph nodes, C. Bone, D. Liver
B: Regional lymph nodes
Answer: B: Regional lymph nodes 
Explanation: Ans. B. Regional lymph nodesThe metastatic potential of BCC is very low with rates ranging from 0.0028to0.1%, The head and neck region is the most frequent location of the primary tumor with regional lymph nodes being the most common site of metastasis. The lungs, bone, liver, and pleural are also potential sites of metastasis