I did a chemical cauterization, but it was not laser ...

I did a chemical cauterization, but it was not laser, the doctor just went kind of a liquid that burned, but my colleague did, it was laser, had to even do biopsy. Was hers very serious, or is there a variety of cauterization, or does it depend on the case? Explain to me please!
Expert answer:

There are several types of cauterization that can be used for the same problem or for different problems, it all depends on the clinical indication and the doctor, many doctors use a certain technique that is different from that used by other doctors.