Squamous Cell Carcinoma Scalp

Just found out from my dermatologist that I have SCC on my scalp.  The doctor wants to do a C & D which the nurse said can be done in office.  The lesion was less than .4 centimeters.  I have questions:

1) Should I get a 2nd opinion on my biopsy?

2) What is a C & D?

3) Will a C & D remove all the cancer or do I need to pursue other treatments as well?

Shocked and confused right now about the cancer diagnosis. 

 

Thanks