What should always be assessed before performing any definitive surgical procedure?

The appropriate choice is to assess biopsy results before performing any definitive surgical procedure. This is critical because biopsy results often provide crucial information regarding the nature of a lesion or abnormality. Knowing whether a mass is benign or malignant can significantly influence the surgical approach, the extent of the procedure, and the urgency with which it is performed.

While assessing the underlying condition, patient history, or the presence of gangrene are also important aspects of pre-surgical evaluation, the biopsy results give direct insights into what is being treated surgically. They help in determining the diagnosis and guiding the treatment plan, ensuring that surgery is necessary and appropriate based on the most accurate information available, which may prevent unnecessary surgeries or complications.