Start with the sample and diagnosis
Check what was examined: a needle biopsy, tissue removed during an operation or another type of sample. A report from a small sample and one from a larger operation may contain different amounts of information.
The diagnosis names the disease found. A name such as adenocarcinoma describes a type of cancer, rather than simply the organ containing it. Ask your clinician to explain the exact wording that applies to you.
Grade is not stage
Grade describes features of the cancer cells. Stage describes the extent of the disease. They answer different questions, as explained in cancer stage and grade.
Some reports contribute information about stage, including findings in removed lymph nodes. Scans and other assessments may still be needed. Not every cancer uses the same grading or staging system.
What are margins?
When a tumour is removed, the pathologist may assess the edges of the removed tissue, called margins. A negative margin means cancer was not seen at the examined edge; a positive margin means cancer was seen there.
These findings can affect the next treatment discussion. A negative margin does not, on its own, prove that cancer can never return. The significance depends on the operation, cancer type and other findings.
Additional stains and biomarkers
Laboratory tests can help identify the cancer or investigate features relevant to treatment. A result described as positive or negative needs a named test and context. It is not automatically good or bad news.
For a neuroendocrine tumour, for example, Ki-67 and differentiation have specific meanings. Tests used for another cancer may answer quite different questions.
Why might there be an addendum?
An addendum adds information after the first report, such as an extra stain or molecular test. A pending test has not yet produced a final answer. Ask whether the remaining results could change the treatment recommendation.
If you see the report before an appointment, note the terms you want explained. Do not assume that every unfamiliar phrase represents another diagnosis. The useful question is: which findings matter for my treatment, and what is still uncertain?
