Where in a pathology report would you find information about surgical margins and invasion?

• A. The Final Diagnosis section and the microscopic description (micro section).
• B. The Impression section only
• C. The Methods section
• D. The References

Answer: (A)

The important idea here is that the detailed assessment of surgical margins and invasion comes from the actual tissue study under the microscope and is then summarized in the final, concise diagnosis. The microscopic description records what the pathologist sees in the tissue, including whether tumor is present at the inked margins, how close the tumor is to those margins, and evidence of invasion into surrounding structures, often with measurements and notes on depth or patterns of invasion. The final diagnosis pulls those observations together into a clear statement about margin status (positive or negative) and the presence or absence of invasion, which is the key clinical takeaway. The impression section may reiterate the overall conclusion but is not where the detailed findings are laid out; the methods section describes how the tissue was processed and examined, and the references list sources.