How to use pathology viva questions
Pathology viva questions test more than recall. You may need to identify a specimen, interpret a microscopic description, explain a result to a clinician, defend a differential diagnosis, or describe the next step when the material is inadequate. A strong answer is organised, safe and specific.
The exact format differs between universities, colleges and countries. Some assessments use short stations; others use long cases, spot specimens, microscope images, frozen sections, clinical pathology problems or an oral defence of a report. Do not assume that the number of stations, time allowed, pass mark or permitted equipment is the same everywhere. Check the official examination body's current regulations and candidate guide.
This method works across those formats:
- Define the task. Is the examiner asking for identification, interpretation, differential diagnosis, management, quality assurance or communication?
- State what you can see or know. Separate observation from interpretation.
- Give the leading diagnosis. Add the level of certainty: for example, “consistent with” rather than “proven” when the material is limited.
- Support it with discriminating features. Name the features that separate your diagnosis from its closest alternatives.
- Address safety and limitations. Mention urgent findings, specimen adequacy, clinical correlation, ancillary tests or escalation.
- Finish with an action. Say what you would report, request, recommend or communicate.
A useful opening for a specimen station is: “This is a [specimen], showing [key finding]. The appearances are most consistent with [diagnosis]. I would confirm the interpretation with [test or correlation], while considering [important differential].”
A useful opening for a clinical pathology station is: “The result is [abnormal or normal] in the context provided. My immediate concern is [risk]. I would first check [sample, patient and result validity], then communicate the result and recommend [next action].”
The aim is not to recite every fact you know. It is to make your reasoning visible.
Build an examiner-facing answer
Before practising individual stations, divide your pathology knowledge into five answer types.
1. Morphology
Describe the specimen systematically: type and orientation, architecture, cytology, stroma, necrosis, invasion, margins and relevant background. Avoid jumping straight to a diagnosis without showing the observations that support it.
For a lymph node, for example, comment on architecture, follicles, paracortex, sinuses, necrosis, granulomas and atypical cells. For a tumour, explain whether the pattern is glandular, squamous, spindle-cell, nested, papillary or discohesive before naming entities.
2. Differential diagnosis
Give two or three realistic alternatives, not an unranked catalogue. For each, state the feature or test that would move it up or down your list. In a poorly differentiated carcinoma, “metastatic carcinoma, lymphoma and melanoma” is more useful than listing ten rare sarcomas without a plan to distinguish them.
3. Ancillary testing
Name a test only when it answers a defined question. For example, cytokeratin and leukocyte common antigen address lineage in an undifferentiated malignant tumour; a molecular test may establish a specific fusion or mutation; flow cytometry may help classify a suspected haematolymphoid neoplasm. Explain what you would do if the result were negative, equivocal or technically invalid.
4. Clinical pathology and safety
For a critical result, start with validity and urgency. Confirm patient and sample identifiers, assess whether the specimen is suitable, check for analytical or transcription error, review previous results where relevant, and communicate promptly through the local escalation pathway. Do not give a treatment dose or reporting threshold unless you know it applies to the laboratory and jurisdiction in question.
5. Communication and limitations
A viva often exposes whether you understand the boundary between a pathological interpretation and a clinical decision. State when you need more tissue, deeper levels, a colleague's review, clinical-radiological correlation or discussion at a multidisciplinary meeting. That is not evasion; it is safe reporting.
In the practice system, the examiner strip keeps those priorities visible while you work. MySummaries uses the following examiner persona for this pathology set:
Use the emphases as a checklist, not as a claim about every real examination. Your institution may use different domains or a different scoring system.
Four pathology viva stations to practise
The station list below covers common tasks rather than a particular examination blueprint. Start each answer aloud, with a clear first sentence. Do not begin by apologising or by listing every possibility.
A station table makes the practice set concrete: it shows the opening question, the type of reasoning required and whether the attempt has been completed.
The first four stations below are written as full practice prompts. The fifth is included because pathology vivas often test the handover between laboratory interpretation and urgent clinical action.
Station 1: Microcytic anaemia
The important move is to interpret the pattern rather than repeat isolated values. Low haemoglobin and low MCV establish anaemia with microcytosis. A ferritin of 5 micrograms/L strongly supports depleted iron stores in this context, while raised total iron-binding capacity supports iron deficiency. The answer must then move from classification to cause.
In an adult, do not stop at “give iron”. Mention blood loss, diet, malabsorption and increased requirements as possible causes, then prioritise investigation according to the patient's age, sex, symptoms and local pathway. Avoid inventing a single gastrointestinal investigation as universally correct.
Examiner
A 32-year-old has fatigue, haemoglobin 86 g/L, MCV 68 fL, ferritin 5 micrograms/L and a raised total iron-binding capacity. Interpret the results and advise the clinician.
Correctly identified iron-deficiency anaemia and linked the low ferritin and raised total iron-binding capacity to depleted iron stores.
ImproveState that ferritin can be falsely normal or raised during inflammation, although that limitation is less important with a value of 5 micrograms/L.
Mentioned menstrual and gastrointestinal blood loss, diet and malabsorption.
ImprovePrioritise finding the source of blood loss rather than presenting causes as an unranked list.
Recommended iron replacement and follow-up of the haemoglobin response.
ImproveSay that the investigation pathway depends on the patient's symptoms, age, sex and local guidance; do not prescribe a universal work-up.
The result was explained in language a clinician could use with the patient.
ImproveAdd the need to review the blood count, reticulocyte response and iron indices when assessing response.
A strong answerThese results show iron-deficiency anaemia: the haemoglobin and MCV are low, ferritin is markedly depleted and total iron-binding capacity is raised. I would confirm the patient and sample details, review the blood film if indicated, and ask about menstrual, gastrointestinal and other blood loss, diet, pregnancy and malabsorption. Iron replacement may be required, but the source of deficiency must be investigated according to the clinical context and local guidance. I would arrange follow-up to document a haemoglobin response and escalate if the response is absent or the patient is clinically unstable.
Notice the answer's order: interpretation, cause, action and follow-up. A candidate who gives the correct diagnosis but ignores why the deficiency occurred has answered only half the station.
Station 2: Breast core biopsy
A breast core requires disciplined description and careful separation of what the morphology establishes from what requires immunohistochemistry or clinical information. “Invasive carcinoma” may be a defensible conclusion if malignant glands are present in desmoplastic stroma, but the final report may need histological type, grade, receptor status and other locally required elements.
Do not invent receptor results. In a viva, say which tests are required and why. Also mention whether in situ disease, lymphovascular invasion, treatment effect or a special type is present only if the described material supports it.
Examiner
Describe a breast core showing invasive glands in desmoplastic stroma and explain the information needed before issuing the report.
Recognised malignant glands infiltrating desmoplastic stroma and distinguished invasion from an in situ process.
ImproveComment explicitly on cytological features, tubule formation, pleomorphism, mitotic activity and necrosis if they can be assessed.
Included invasive carcinoma, grade, lymphovascular invasion and associated in situ carcinoma as reportable features.
ImproveState the limitations of grading on a small core when the relevant features are not adequately sampled.
Requested oestrogen receptor, progesterone receptor and HER2 assessment according to local protocol.
ImproveExplain that the exact testing and interpretation method must follow the current laboratory and guideline requirements.
Asked for imaging findings and the clinical target of the biopsy.
ImproveMention radiology-pathology concordance and further sampling if the result does not explain the imaging abnormality.
A strong answerThe described glands infiltrating desmoplastic stroma support invasive carcinoma, but I would first assess the architecture, cytological atypia, tubule formation, mitotic activity, necrosis and any associated in situ component. I would record the tumour type where possible and grade it only if the core permits a reliable assessment. I would assess the required predictive markers, including oestrogen receptor, progesterone receptor and HER2, using the current local protocol. I would also check radiology-pathology concordance and state whether the sample is sufficient for the required tests. If the pathology does not explain the imaging target, I would discuss further sampling rather than issue false reassurance.
The examiner is looking for a reportable answer, not a lecture on every breast tumour. Practise saying what you know, what you need to test and what would make you seek more tissue.
Station 3: Acute leukaemia work-up
The safe opening is that a high blast proportion is an urgent finding requiring rapid confirmation, classification and clinical communication. The film alone may suggest acute leukaemia, but it may not establish lineage or the precise entity.
Mention full blood count review, blood film, bone marrow assessment where appropriate, flow cytometry, cytogenetic and molecular studies guided by the provisional diagnosis, and urgent communication. The differential should include acute myeloid leukaemia, acute lymphoblastic leukaemia and mixed-phenotype acute leukaemia, with reactive or other mimics considered where relevant.
Examiner
A blood film contains 65% blasts. Explain your immediate laboratory approach and the key differential diagnoses.
Identified a potentially life-threatening result and prioritised immediate communication with the clinical team.
ImproveSpecify that communication should follow the laboratory's critical-result pathway and be documented.
Proposed morphology, flow cytometry and further genetic studies to establish lineage and classification.
ImproveExplain that the test panel should be guided by the initial findings and specimen quality, not ordered as an indiscriminate list.
Included acute myeloid, acute lymphoblastic and mixed-phenotype acute leukaemia.
ImproveState that morphology alone cannot reliably assign lineage in all cases.
Asked for a fresh suitable specimen and considered the effect of a delayed sample on flow cytometry.
ImproveAdd review for cytopenias, coagulopathy and tumour lysis risk in the clinical context.
A strong answerA film with 65% blasts is an urgent finding that I would communicate promptly through the local critical-result pathway while confirming the patient and specimen. I would review the morphology and blood count, arrange an appropriate fresh specimen for flow cytometry, and discuss marrow examination and genetic studies with the haematology team. The key differential includes acute myeloid leukaemia, acute lymphoblastic leukaemia and mixed-phenotype acute leukaemia; morphology alone may not establish lineage. I would also ask about clinical instability, bleeding, infection, coagulopathy and tumour lysis risk, and document the communication and limitations of the preliminary result.
A common lost mark is treating “65% blasts” as a complete diagnosis. It is a major clue and an urgent result, but classification depends on integrated morphology, immunophenotyping and other investigations.
How to discuss a renal crescent station
For the renal station, begin by saying that crescents indicate severe glomerular injury but are not, on their own, a single disease. Ask whether crescents are cellular, fibrocellular or fibrous and how many glomeruli are involved. Then request light microscopy, immunofluorescence and electron microscopy findings, alongside renal function, urine findings, serology and infection history.
Your differential should be organised by immunofluorescence pattern: pauci-immune crescentic glomerulonephritis, anti-glomerular basement membrane disease and immune-complex disease. The management urgency comes from the clinical syndrome and renal trajectory, so avoid giving a universal treatment regimen in an international viva. State that urgent discussion with nephrology is required.
For a positive blood culture with Gram-negative rods in a hypotensive patient, state that you would verify the result and specimen, notify the clinical team urgently, continue organism identification and susceptibility testing, and follow the local sepsis and critical-result pathway. Do not guess an antibiotic choice when local resistance patterns and patient factors are unknown.
Review the words that cost marks
After an oral answer, review the exact phrase that weakened it. “I would arrange appropriate tests” is usually too vague. Name the question the test answers. “It could be many things” is not a differential. Rank the likely diagnoses and give a discriminator. “I would tell the doctor” needs a method and urgency.
A transcript review can identify whether the problem was missing knowledge, insufficient detail or an answer that was correct but poorly prioritised.
The film shows many blasts, so this is acute leukaemia and I would send flow cytometry. I would arrange appropriate further tests. I would tell the clinical team because the patient may be unwell. I would also consider AML and ALL, but I have not explained how to distinguish them.
I would arrange appropriate further tests
The phrase does not say which test answers which diagnostic question or how urgency changes the sequence.
Say: Say: ‘I would urgently communicate the result, send a fresh sample for flow cytometry to establish lineage, and select cytogenetic and molecular tests with haematology according to the provisional classification.’When reviewing your own recording, mark only the phrases that changed the score. Keep useful wording as well: a concise, accurate opening is an asset even when the later answer needs work.
A short debrief after every station
Do not measure practice only by the final percentage. Record four things:
- the diagnosis or interpretation you gave first;
- the strongest supporting feature;
- the safety or limitation point you omitted;
- one sentence you will use next time.
For example: “Next time, after identifying a crescentic process, I will immediately ask for the immunofluorescence pattern and state that urgent nephrology discussion is required.” This produces a reusable answer rather than a vague instruction to revise renal pathology.
A spoken debrief is useful when the answer was broadly correct but the order was poor:
You recognised the blast population and named the main differential, but the answer needed urgent communication before the classification details.
A repeatable week of viva practice
On the first day, choose four stations and give each a timed attempt. On the second, revise the facts that caused omissions: for example, the interpretation of iron studies, the purpose of flow cytometry or the role of immunofluorescence in crescentic disease. On the third, repeat the same stations without looking at the model answers. On the fourth, substitute unfamiliar cases and practise handling incomplete information. On the fifth, ask a colleague to interrupt with follow-up questions such as “What would change your diagnosis?” and “How would you communicate this?”
Keep the final session shorter. Practise first sentences, ranked differentials, critical-result communication and limitation statements. A pathology viva rewards controlled reasoning under pressure, so the final rehearsal should resemble the speaking task rather than become another long reading session.
If you are preparing for a named college, university or hospital examination, confirm the current station types, syllabus, timing, permitted materials, scoring method and result requirements on the official body's website. Use the stations above to practise the transferable work: observation, interpretation, prioritisation, testing and safe communication.
How MySummaries helps
MySummaries turns your own pathology notes, lecture slides and photographed annotations into a revision board. From that board, you can generate oral stations, record answers, receive examiner-persona feedback on structure and omissions, and return weak topics to your next practice session. You can also create flashcards for thresholds, patterns and test indications, and listen to an examiner-voiced lecture while commuting.