Several surgeries are soul for general surgeon such as thyroid, breast, prostate, kidneys stone, thoracotomy, craniotomy and bone surgery. Not just lump, appendectomy and herniotomy. When general surgeon does not familiar with those surgeries anymore, their surgical soul will die. Avoiding complication in those procedures are important by understanding the surgical anatomy. Thyroid surgery defines a surgeon's precision. Kocher doing first thyroidectomy in 1912 and Galen decribe the RLN. As your homework, several anatomy triangle list below, google it and learn about it. 1. Beahrs Triangle 2. Simon's Triangle 3. Joll's Triangle 4. Lore's Triangle