Reading your pathology report

Grade in Benign and — Borderline Tumours Explained

If your report says benign or borderline, you are probably searching for what that means for you. Benign tumours are not graded because grading only applies to cancer. Borderline is its own separate category — and understanding it is the first step to knowing what comes next.

Medically reviewed by Dr. C. Raghavendra Reddy, Medical Oncologist, MBBS (Gold Medal) · DNB · DM (Medical Oncology, Gold Medal) · Last reviewed September 2026

Benign tumours have no grade — Grading is a cancer measure. A benign report has no grade because grading simply does not apply.
Borderline is not a grade — Borderline means the tumour sits between benign and malignant. It is a category, not a number on a scale.
Grade is not a survival score — Where grading is used, it describes how cells look — it is not a prediction of what will happen to you.
Borderline needs follow-up — A borderline finding is not dismissible. Your oncologist will set out what monitoring is needed for your situation.

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Benign tumours are not graded on pathology reports. Borderline tumours — most commonly ovarian, bladder, or soft tissue — sit between benign and malignant. They are not cancer, but they do need follow-up. Your oncologist uses the full report to decide what monitoring is needed.

Do benign tumours get a grade?

No. Grading is a tool used for cancer, not for benign tumours. A grade describes how abnormal cancer cells look under the microscope — it does not apply when the cells are benign.

A benign tumour does not invade surrounding tissue. Its cells look close to normal. Grading has nothing to measure, which is why your report will not show one.

If your report does include a grade, it is almost certainly attached to a separate finding. Ask your oncologist to walk you through what each part of the report refers to.

What is the difference between benign, borderline, and malignant?

Feature	Benign	Borderline	Malignant (Cancer)
Is it cancer?	No	No, but needs monitoring	Yes
Is it graded?	No	Not in the standard grading system	Yes — Grade 1, 2, or 3
Can it spread to other organs?	No	Rarely, in a small proportion of cases	Yes, if untreated
Does it need follow-up?	Depends on location and size	Yes — regular imaging and review	Yes — active treatment
Where is it most often found?	Many sites	Ovary, bladder, some soft tissues	Many sites
What does the report focus on?	Cell appearance, margins	Cell appearance, microinvasion, implants	Grade, stage, margins, invasion

What follow-up does a borderline tumour usually need?

Regular imagingUltrasound or CT at intervals your oncologist sets — the schedule depends on the site and the specific report findings.
Tumour markers where relevantFor borderline ovarian tumours, your team may monitor markers such as CA-125 alongside imaging.
Specialist surgical or gynaecology reviewBorderline ovarian tumours are managed with gynaecology-oncology input. Bladder and soft-tissue lesions involve their own specialists.
Contact your team if symptoms changeDo not wait for a scheduled appointment if you develop new abdominal pain, bloating, or a change in bowel or bladder habit.
Fertility discussion if relevantBorderline tumours are often found in younger women. Fertility-sparing options exist and are worth raising early, before surgery is finalised.
Bring the full report to appointmentsThe complete pathology report — not just the discharge summary — helps your specialist make the most informed decision about follow-up.

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What do the words on your report mean?

Borderline tumour: A tumour that has some abnormal features but does not meet the criteria for cancer. It does not invade surrounding tissue the way a malignant tumour does.
Low malignant potential (LMP): Another name for borderline. It means the risk of behaving like cancer is low — not zero, but much lower than a malignant tumour.
Microinvasion: Tiny areas where borderline tumour cells appear to cross into the surrounding tissue. Your pathologist will note this as a finding; what it means for your management is a conversation with your oncologist.
Peritoneal implants: Small deposits of borderline tumour cells on surfaces inside the abdomen, sometimes seen with ovarian borderline tumours. Described as non-invasive or invasive — your report will specify which.
Atypical cells: Cells that look abnormal but not necessarily cancerous. Atypical is not the same as borderline, and not the same as malignant — it means the pathologist saw something unusual that needs clinical context.
Recurrence: A borderline tumour returning after treatment. Recurrence is possible, and it is the main reason follow-up continues for several years after the initial finding.

Did you know?

Borderline ovarian tumours are a recognised and distinct category in gynaecological pathology — not a borderline diagnosis of cancer. ESMO guidelines treat them separately from ovarian cancer, with surgery as the primary treatment rather than chemotherapy.

Many patients are surprised to learn that a thorough pathology report on a borderline tumour will deliberately leave the grade section blank. That absence is correct, not a mistake.

Source: ESMO Clinical Practice Guidelines: Ovarian Cancer

Questions families ask most

The report says borderline — why didn't the doctor say 'cancer'?

Because borderline is a distinct category, not a polite way of saying cancer. A borderline tumour lacks the invasion that defines cancer — its cells do not grow through surrounding tissue in the way a malignant tumour does. That distinction matters clinically because it changes the treatment, the follow-up, and the risk picture. Doctors use the word borderline precisely because it is the accurate term, not because they are softening difficult news.

Can a borderline tumour become cancer over time?

In a small proportion of cases, a borderline tumour can recur and, less commonly, a recurrence can show malignant features. This is one of the reasons follow-up continues for several years rather than stopping after initial treatment. It does not mean transformation is likely — it means it is possible enough to monitor for. Your oncologist will set a schedule based on the specific features your report describes, not on worst-case assumptions.

My report says 'no grade given' — is something missing?

No. For benign and borderline lesions, the absence of a grade is normal and expected. Grades only apply to malignant tumours, so 'no grade given' is not a gap in the report — it is an accurate reflection of what was found. If you are concerned a section was missed, ask your specialist to go through each part of the report with you so you understand what was assessed and what was not, and why.

My tumour was removed. Do I still need follow-up?

Yes, for borderline tumours. Surgical removal is usually the primary treatment, but follow-up with imaging — and sometimes tumour markers — continues for several years afterwards because recurrence, while not the most common outcome, is possible. The follow-up schedule your oncologist sets is designed to detect any recurrence early when it is most manageable. Attending those appointments matters even when you feel completely well.

What does 'atypical' mean — is it the same as borderline?

No. Atypical means the pathologist saw cells that look abnormal — somewhere between normal and clearly abnormal, without enough features to say exactly what they are. It often prompts closer follow-up or additional testing rather than immediate treatment. Borderline is a more specific diagnosis with defined criteria. If your report says atypical, ask your specialist what the next step is and what finding would change the management plan.

Should we get a second opinion on a borderline report?

Borderline diagnoses — particularly ovarian — can be genuinely difficult to call under the microscope, and specialist pathologists sometimes read the same slide differently. Seeking a second opinion from a centre with gynaecological pathology expertise is reasonable and is something experienced oncologists expect and respect. Bring the original glass slides, not just the printed report, so the reviewing pathologist is looking at the actual tissue rather than a description of it.

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Common questions

Frequently asked questions

Why is there no grade on my benign tumour report?

Because grading is a tool for cancer, not for benign tumours. A grade describes how abnormal cancer cells look under a microscope — it does not apply when the cells are benign. A report that shows no grade for a benign finding is complete, not missing information. If you see a grade on your report, it is most likely attached to a separate finding — ask your oncologist to explain what each section of the report refers to.

What does 'low malignant potential' mean on a report?

Low malignant potential is another name for a borderline tumour. It means the tumour has some abnormal features but does not behave like cancer — it does not invade surrounding tissue in the way a malignant tumour does. The word 'potential' can be alarming, but it is a technical term describing a category, not a prediction about what will happen to you. Your oncologist will explain what it means for your specific findings.

Is a borderline ovarian tumour treated with chemotherapy?

Usually not. Borderline ovarian tumours are generally treated with surgery. Chemotherapy is typically reserved for malignant ovarian cancer, not borderline findings. Treatment decisions depend on the stage, the specific report findings, and whether any peritoneal implants are present. ESMO and NCCN both include specific guidance on borderline ovarian tumours that your gynaecology-oncology team will be working from.

How often do borderline tumours come back after surgery?

Recurrence is possible in a proportion of patients, which is why follow-up continues for several years. The risk depends on the specific features in your pathology report — such as whether implants were present and whether they were invasive or non-invasive. We do not yet have figures precise enough to apply to an individual, which is why your oncologist sets follow-up based on your report rather than a population average. Attend all scheduled appointments even when you feel well.

Can I have children after a borderline ovarian tumour?

For many patients, yes. Borderline ovarian tumours are one of the gynaecological diagnoses where fertility-sparing surgery is often appropriate, particularly for younger patients who have not completed their families. This is a discussion to have early with your gynaecology-oncologist, before any final decisions about surgery are made. Your team will weigh the specific features of your tumour, your age, and your wishes. It is a reasonable question to raise at your first appointment.

What is the difference between a borderline tumour and an atypical finding?

A borderline tumour is a defined diagnosis with specific criteria — cells that are abnormal but lack the invasion that defines cancer. An atypical finding means the pathologist saw something unusual that does not fit neatly into a category, and it usually prompts further investigation or close monitoring rather than a specific treatment. Atypical is not a diagnosis on its own — it is a description that signals more information is needed. Ask your specialist what step comes next.

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