Frequently Asked Questions About Cancer

Diagnosis

What does my cancer stage mean?

Cancer staging describes the size of the tumour and how far it has spread. Most solid cancers use the TNM system: T (tumour size), N (lymph node involvement), and M (metastasis to distant organs). These combine into an overall stage of I–IV.

Stage I means the cancer is small and localised to where it started. Stage II and III indicate larger tumours or spread to nearby lymph nodes. Stage IV means the cancer has spread to distant parts of the body (metastatic disease). Your stage directly affects which treatments are recommended and helps your oncologist discuss your prognosis.

Some cancers use additional staging systems — for example, ovarian and uterine cancers use the FIGO system. For details on staging for a specific cancer, visit our cancer type guides or see our glossary entries on staging and TNM.

Should I get a second opinion?

Yes — getting a second opinion is common, encouraged, and will not offend your doctor. A second opinion can confirm your diagnosis, uncover additional treatment options, or provide reassurance that your treatment plan is appropriate.

Major cancer centres often have multidisciplinary tumour boards that review complex cases, bringing together surgeons, medical oncologists, radiation oncologists, and pathologists. Most insurance plans cover second opinions, and you have the right to seek one at any point in your care.

To get a second opinion, ask your current doctor to send your records (pathology slides, imaging, lab results) to the new specialist. You do not need to repeat all of your tests. Our Find a Doctor page can help you locate a specialist.

What tests will I need after my diagnosis?

After an initial diagnosis, your care team will likely order additional tests to determine the cancer’s stage and characteristics. These may include:

• Imaging studies: CT scans, MRI, or PET scans to determine tumour size and check for spread
• Blood tests: Tumour markers (such as PSA, CA-125, or CEA) and blood counts
• Molecular profiling: Genetic testing of the tumour itself to identify targetable mutations
• Additional biopsies: If spread to other sites is suspected

The specific tests depend on your cancer type — for example, breast cancer patients typically have HER2 and hormone receptor testing, while lung cancer patients may have EGFR and PD-L1 testing. Ask your doctor to explain each test and how the results will guide your treatment plan.

How long does it take to get a diagnosis?

The timeline varies depending on the type of cancer and the tests required. Some cancers are diagnosed quickly after a single biopsy, while others require multiple tests over several weeks.

A typical timeline from initial suspicion to a complete diagnosis with staging information is 2–4 weeks, though it can be shorter or longer depending on the complexity of the case. Pathology results from a biopsy usually take 5–10 business days. Molecular profiling or genetic testing of the tumour can take an additional 1–3 weeks.

Waiting for results is stressful, but thorough testing is essential for creating the best treatment plan. If your results are taking longer than expected, contact your doctor’s office for an update.

What questions should I ask my doctor at my first appointment?

Prepare a list of questions before your appointment. Key questions include:

• What type and stage is my cancer?
• What are my treatment options and their success rates?
• What side effects should I expect?
• Is there a clinical trial I should consider?
• How will treatment affect my daily life and work?
• Will I need to see other specialists?
• What is my prognosis?
• Are there things I can do to improve my outcome?

Consider bringing a family member or friend to help take notes. Your oncologist expects and welcomes questions — understanding your diagnosis is the first step in your care.

How accurate is a biopsy?

A biopsy is the gold standard for diagnosing cancer and is highly accurate when performed and interpreted correctly. The tissue sample is examined by a pathologist — a doctor who specialises in diagnosing diseases by studying cells and tissues under a microscope.

In rare cases, a biopsy may be inconclusive if the sample is too small or does not contain representative tissue. If this happens, your doctor may recommend a repeat biopsy or a different biopsy technique. If you have any doubts about your biopsy results, requesting a pathology second opinion — where your slides are reviewed by a pathologist at another institution — is a reasonable step, especially for rare or unusual cancers.

Treatment

How do I choose between different treatment options?

Treatment decisions should be made together with your oncology team through a process called shared decision-making. Factors that guide the choice include your cancer type, stage, and molecular profile; your overall health and preferences; and the potential benefits and risks of each option.

For many cancers, standard-of-care guidelines from organisations like the NCCN outline recommended approaches based on extensive clinical evidence. Ask your doctor to explain why a specific treatment is recommended, what the alternatives are, and what happens if you choose to delay or decline a treatment.

A multidisciplinary team review can provide additional perspectives. Do not feel rushed — for most cancers, taking a week or two to make an informed decision will not affect your outcome.

How long does cancer treatment usually last?

Treatment length varies widely depending on the cancer type, stage, and treatment approach:

• Chemotherapy: Typically 3–6 months for adjuvant treatment, though metastatic cancer treatment may continue indefinitely
• Radiation therapy: Usually given daily for 4–7 weeks
• Surgery: A single event, but recovery can take weeks to months
• Immunotherapy: May continue for 1–2 years, or until the cancer progresses
• Hormone therapy: For breast or prostate cancer, may last 5–10 years

Many treatment plans involve a combination of these approaches (for example, surgery followed by chemotherapy). Your doctor will outline a treatment timeline specific to your situation.

Can I work during chemotherapy?

Many patients continue to work during chemotherapy, though it depends on the type of treatment, your side effects, and the nature of your job. Some people work full-time with minor adjustments; others reduce hours or take medical leave during the most intense phases of treatment.

Fatigue is the most common barrier to working during chemotherapy. Many patients find that they feel worst in the first few days after each infusion, followed by a gradual improvement before the next cycle. Scheduling treatments late in the week can allow recovery time over the weekend.

Talk to your employer about flexible scheduling, and ask your care team what level of activity is safe. You may qualify for FMLA leave or short-term disability if you need time off.

What are clinical trials, and should I consider one?

Clinical trials are research studies that test new treatments, drug combinations, or approaches to cancer care. They offer access to cutting-edge therapies that are not yet widely available and are closely monitored for safety. Every standard cancer treatment used today was once tested in a clinical trial.

Trials go through phases: Phase I tests safety and dosing in a small group; Phase II evaluates effectiveness; Phase III compares the new treatment to the current standard of care; and Phase IV monitors long-term effects after approval.

Trials exist for all stages and types of cancer. Ask your oncologist whether a clinical trial might be appropriate for your situation. You can also search the National Cancer Institute’s database at clinicaltrials.gov. Participation is voluntary, and you can leave a trial at any time.

Will I lose my hair during treatment?

Hair loss depends on the type of treatment. Many chemotherapy drugs cause partial or complete hair loss because they target rapidly dividing cells, which includes hair follicle cells. Not all chemo drugs cause hair loss, so ask your oncologist about your specific regimen.

Radiation therapy only causes hair loss in the area being treated. Immunotherapy and targeted therapy generally do not cause significant hair loss. Scalp cooling caps can reduce hair loss for some chemotherapy regimens.

Hair typically begins to grow back 2–4 weeks after treatment ends. The new hair may be a different texture or colour initially, but usually returns to normal over time. Many insurance plans cover wigs and head coverings when prescribed by a doctor.

What is the difference between curative and palliative treatment?

Curative treatment aims to eliminate the cancer completely, leading to remission or a cure. Palliative treatment focuses on relieving symptoms and improving quality of life, often for advanced cancers where a cure is unlikely.

Importantly, palliative care is not the same as giving up — it can be provided alongside curative treatment at any stage of cancer. Research has shown that patients who receive early palliative care alongside standard treatment often experience better quality of life, less depression, and in some cases, even longer survival.

Palliative care specialists work with your oncology team and can help manage pain, nausea, fatigue, anxiety, and other symptoms that affect your daily life.

What is immunotherapy, and is it right for me?

Immunotherapy is a type of cancer treatment that helps your immune system recognise and fight cancer cells. The most common type, checkpoint inhibitors, work by removing the “brakes” that cancer cells use to hide from the immune system. Other types include CAR-T cell therapy and cancer vaccines.

Immunotherapy has shown remarkable results for certain cancers, including lung cancer, melanoma, bladder cancer, and kidney cancer. However, it does not work for every patient or every cancer type. Your tumour’s biomarkers (such as PD-L1 expression and microsatellite instability) help predict whether immunotherapy is likely to be effective.

Ask your oncologist whether immunotherapy is an option for your specific situation. Learn more in our glossary entries on checkpoint inhibitors, PD-L1, and immunotherapy.

Side Effects

What side effects should I worry about?

Most treatment side effects are manageable and temporary, but some require immediate medical attention. Contact your care team or go to the emergency room if you develop:

• A fever over 100.4°F (38°C) during chemotherapy — this could signal neutropenic fever, a medical emergency
• Uncontrolled bleeding or bruising
• Severe shortness of breath or chest pain
• Sudden confusion or changes in mental status
• Signs of a blood clot such as sudden leg swelling with pain
• Severe allergic reaction (difficulty breathing, swelling of face or throat)

Your oncology team will give you a specific list of warning signs to watch for based on your treatment. Keep their after-hours phone number saved in your phone.

When should I go to the emergency room?

Go to the emergency room immediately for: fever above 100.4°F (38°C) during chemotherapy, severe or uncontrolled vomiting or diarrhoea lasting more than 24 hours, signs of infection (redness, swelling, pus, or warmth around a wound or port site), difficulty breathing, chest pain, sudden severe headache, seizures, or any bleeding that does not stop with pressure.

When you arrive at the ER, tell the triage team that you are a cancer patient currently undergoing treatment. This information is important because it affects how they evaluate and treat you. Bring a list of your current medications and your oncologist’s contact information.

When in doubt, call your oncology team’s after-hours line — they would rather hear from you than have you wait if something is wrong.

How can I manage fatigue during treatment?

Cancer-related fatigue is the most common side effect of treatment and can persist for months after treatment ends. It is different from ordinary tiredness — rest alone may not relieve it.

Evidence-based strategies include:

• Light to moderate exercise — even a 15–20 minute daily walk can help
• Maintaining a regular sleep schedule
• Prioritising activities and delegating tasks
• Eating a balanced diet and staying hydrated
• Asking your doctor whether anaemia, thyroid problems, or other treatable causes are contributing
• Occupational therapy and energy conservation techniques

Do not hesitate to tell your care team about fatigue — it is a real medical symptom, not a sign of weakness. Adjustments to your treatment plan may help.

How can I manage nausea from chemotherapy?

Modern anti-nausea medications (antiemetics) are very effective and are routinely given before and after chemotherapy. Your care team will prescribe a regimen tailored to your specific drugs.

Additional strategies that help:

• Eat small, frequent meals instead of three large ones
• Avoid spicy, greasy, or strong-smelling foods
• Try bland foods like crackers, toast, or rice
• Sip clear fluids throughout the day
• Try ginger tea or ginger supplements
• Eat cool or room-temperature foods, which have less odour

Report persistent nausea to your doctor — they can adjust or add medications. You should not have to suffer through severe nausea with today’s available treatments.

Will treatment affect my ability to have children?

Some cancer treatments can affect fertility. Certain chemotherapy drugs, radiation to the pelvic area, and some surgeries can damage reproductive organs or reduce fertility temporarily or permanently.

If preserving fertility is important to you, discuss this with your oncologist before starting treatment. Options include:

• Sperm banking for men
• Egg or embryo freezing for women
• Ovarian tissue preservation
• Ovarian shielding during radiation

A reproductive endocrinologist or fertility specialist can provide guidance on the best approach for your situation. Time may be limited, so raise this topic as early as possible after diagnosis.

After Treatment

What is survivorship care?

Survivorship care is the ongoing health care you receive after completing active cancer treatment. It includes regular follow-up appointments to monitor for recurrence, management of long-term and late side effects, emotional and psychological support, and guidance on maintaining a healthy lifestyle.

Your oncologist should provide a survivorship care plan — a document that summarises your diagnosis, treatments received, and a schedule for follow-up tests. This plan is also useful for your primary care doctor, who will share responsibility for your ongoing care. If you do not receive a survivorship care plan, ask for one.

Common long-term effects that survivorship care addresses include fatigue, neuropathy, lymphoedema, cognitive changes (“chemo brain”), and emotional adjustment. Our glossary defines many of these terms.

How often will I need follow-up appointments?

Follow-up schedules vary by cancer type and stage. A common pattern is:

• Years 1–2: Every 3–4 months
• Years 3–5: Every 6 months
• After year 5: Annually

Appointments typically include a physical exam, blood tests (including tumour markers where applicable), and periodic imaging such as CT scans or mammograms. Your oncologist will tailor your schedule based on your specific cancer, treatment, and risk of recurrence.

Keep all follow-up appointments, even when you feel well — early detection of recurrence improves outcomes. If you miss an appointment, reschedule as soon as possible.

What are the signs that cancer has come back?

Signs of recurrence vary depending on the cancer type and location, but general warning signs include:

• New or unexplained pain that persists for more than two weeks
• A new lump or mass anywhere in the body
• Unexplained weight loss
• Persistent fatigue beyond what is normal for you
• New neurological symptoms such as headaches, vision changes, or seizures
• Changes in bowel or bladder habits
• Persistent cough or difficulty breathing

Not all new symptoms indicate recurrence — many have non-cancerous causes — but report anything unusual to your doctor promptly. Regular follow-up tests are designed to catch recurrence before symptoms appear.

When can I return to normal activities after treatment?

Recovery timelines depend on the type and intensity of your treatment. Some patients resume normal activities within weeks of completing treatment, while others need several months.

Physical recovery from surgery typically takes 4–8 weeks. Fatigue from chemotherapy or radiation may linger for months. Many patients describe a “new normal” rather than a return to their pre-cancer baseline.

Set realistic expectations, gradually increase your activity level, and give yourself permission to rest. Your care team can advise on when it is safe to return to work, exercise, driving, and other specific activities. For prevention strategies that support long-term health after treatment, see our cancer prevention guide.

Are there long-term effects I should know about?

Some cancer treatments can cause side effects that appear months or years after treatment ends. These are called “late effects” and vary depending on the treatments you received:

• Chemotherapy: Peripheral neuropathy (tingling or numbness in hands and feet), heart damage (with certain drugs), cognitive changes, secondary cancers
• Radiation: Fibrosis (scarring) in the treated area, secondary cancers, organ damage depending on the treatment site
• Surgery: Lymphoedema, chronic pain, functional changes depending on the organ involved
• Hormone therapy: Bone density loss, joint pain, menopausal symptoms

Your survivorship care plan should include monitoring for late effects relevant to your treatment. Report any new symptoms to your doctor, even years after treatment.

Support & Resources

Where can I find financial help for cancer treatment?

Cancer treatment costs can be significant, even with insurance. Resources include:

• Hospital financial counselling: Your hospital’s financial counselling or social work department is the best first step
• American Cancer Society: Financial assistance programmes for treatment costs, transportation, and lodging
• CancerCare: Co-payment assistance and transportation grants (cancercare.org)
• Patient Access Network Foundation: Help with out-of-pocket costs for specific conditions (panfoundation.org)
• Drug manufacturer programmes: Most pharmaceutical companies offer patient assistance programmes for their cancer drugs
• State Medicaid: For patients who meet income requirements

Do not delay treatment because of cost concerns — ask your care team about financial assistance as early as possible.

How do I talk to my family about my diagnosis?

There is no single right way to share a cancer diagnosis, but honesty and openness generally help. Choose a quiet, private setting. Share the basic facts about your diagnosis and treatment plan. Let people react in their own way and give them time to process the news.

For children, use age-appropriate language and reassure them that it is not their fault and that they will continue to be cared for. Consider asking a social worker, counsellor, or your oncology nurse for guidance — many cancer centres offer family counselling services specifically for this purpose.

You do not have to manage everyone’s emotions — focus on what you need, and let your support network help. Some patients find it helpful to designate one person as a point of contact to share updates with the wider circle of family and friends.

Where can I find support groups?

Support groups connect you with others who understand what you are going through. Options include:

• Your cancer centre: Most offer in-person groups for patients and caregivers
• American Cancer Society: Free programmes including reach-to-recovery and support groups
• CancerCare: Free online and phone-based support groups led by professional counsellors
• Cancer Support Community: In-person and online groups across the country
• Disease-specific organisations: Such as the Pancreatic Cancer Action Network or Leukaemia & Lymphoma Society
• Online communities: Cancer.net, Inspire, and others provide 24/7 peer support

Ask your oncology social worker for recommendations tailored to your situation, cancer type, and preferences.

How do I cope with the emotional impact of cancer?

Anxiety, depression, anger, and fear are all normal responses to a cancer diagnosis. Studies show that up to 40% of cancer patients experience significant psychological distress. This is a medical reality, not a personal failing.

Effective strategies include: speaking with a psycho-oncologist or licensed counsellor experienced in cancer care, joining a support group, staying physically active within your limits, practising mindfulness or relaxation techniques, and maintaining social connections.

Many cancer centres offer distress screening and free counselling services. Medication for anxiety or depression may also be appropriate. Emotional well-being is an important part of your overall cancer care — do not hesitate to ask for help.

What should I know about nutrition during cancer treatment?

Good nutrition helps your body tolerate treatment, fight infection, and recover. General guidelines include:

• Eat enough protein to maintain muscle mass (eggs, fish, poultry, beans, dairy)
• Stay well hydrated — aim for 8+ glasses of fluid per day
• Eat a variety of fruits, vegetables, and whole grains
• Take supplements only if recommended by your doctor

Some treatments cause taste changes, nausea, or mouth sores that make eating difficult — a registered dietitian who specialises in oncology can help you navigate these challenges. Avoid unproven “cancer diets” or extreme restrictions unless specifically advised by your care team.

For information on how diet relates to cancer risk, see our cancer prevention guide.

I am a caregiver. Where can I get support?

Caring for someone with cancer is physically and emotionally demanding. Caregiver burnout is common and can affect your own health if not addressed.

Resources for caregivers include:

• Cancer centre support services: Many offer caregiver-specific counselling and support groups
• Family Caregiver Alliance: Education, resources, and state-by-state support (caregiver.org)
• CancerCare: Free counselling for caregivers as well as patients
• Respite care: Ask your hospital social worker about services that provide temporary relief

Take care of your own health: maintain your own medical appointments, accept help when offered, set boundaries, and talk to someone about your own feelings. You cannot pour from an empty cup.

Last reviewed: March 2026. Information is based on guidelines from the American Cancer Society, National Cancer Institute, and National Comprehensive Cancer Network. Consult your healthcare provider for personalised advice.