From Diagnosis to Treatment Understanding the Cancer Journey
Being told that cancer may be present can be overwhelming. Many people quickly find themselves facing new tests, unfamiliar terminology and difficult decisions.
Understanding what happens between diagnosis and treatment can help make this process feel less confusing.
This guide explains how cancer is diagnosed, what staging and grading mean, how scans and biopsies are used, and how treatment decisions are made.
Understanding how cancer is diagnosed, staged and how treatment decisions are made
Why Diagnosis Involves Several Steps
Cancer diagnosis is rarely based on a single test.
Doctors often need to gather information from different sources to understand:
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The type of cancer
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Where it started
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Whether it has spread
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How the cancer cells behave
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Which treatments may be most appropriate
This information helps create a treatment plan tailored to the individual's situation.
What Is A Biopsy?
A biopsy involves taking a small sample of tissue or cells so that it can be examined under a microscope.
This is often the test that confirms whether cancer is present.
A biopsy may help determine:
The type of cancer
Whether cancer cells are present
How abnormal the cells appear
Whether further specialised testing is needed
The sample is analysed by a specialist doctor called a pathologist.
Understanding Your Pathology Report
The pathology report contains information gathered from the biopsy.
Depending on the cancer type, it may describe:
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The type of cancer
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The grade of the tumour
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Hormone receptors
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Biomarkers
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Features that may influence treatment decisions
Pathology reports often contain technical language and are best discussed with the oncology team responsible for treatment planning.
What Is Cancer Staging?
Staging describes how far cancer has grown or spread within the body.
Doctors use staging to help:
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Plan treatment
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Estimate likely outcomes
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Compare treatment approaches
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Monitor progress over time
Staging is one of the most important factors used when making treatment decisions.
Understanding Cancer Stages
Although staging systems vary between cancers, a simplified overview is:
Every cancer is different, and stage alone does not determine prognosis or treatment options.
Stage 1
Cancer is usually small and confined to the area where it started.
Stage 2
Cancer may be larger or have started to involve nearby tissues.
Stage 3
Cancer has often spread to nearby lymph nodes or structures.
Stage 4
Cancer has spread to distant parts of the body.
This is sometimes called metastatic cancer.
Stage And Grade: What's The Difference?
These two terms are often confused.
Stage
Describes where the cancer is and whether it has spread.
Grade
Describes how abnormal the cancer cells look under a microscope.
A low-grade tumour may behave differently from a high-grade tumour, even if both cancers are at the same stage.
Both pieces of information help guide treatment planning.
Why Are Scans Needed?
Scans allow doctors to look inside the body and gather information about the cancer.
They may be used to:
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Locate a tumour
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Measure its size
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Assess lymph nodes
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Look for spread
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Plan treatment
Common investigations include:
CT Scans
Often used to assess the chest, abdomen and pelvis.
MRI Scans
Provide detailed images of soft tissues and organs.
PET Scans
Help identify areas of increased metabolic activity and may assist with staging.
Ultrasound
Often used to examine specific organs and guide biopsies.
Understanding Lymph Nodes
Lymph nodes are part of the body's immune and lymphatic systems.
Some cancers can spread to nearby lymph nodes before spreading elsewhere.
Checking lymph nodes helps doctors understand the stage of the disease and may influence treatment recommendations.
What Are Biomarkers?
Modern cancer care increasingly looks at the biological characteristics of a tumour.
Some cancers contain specific markers that help doctors determine which treatments are most likely to be effective.
Biomarker testing may influence decisions about:
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Targeted therapies
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Immunotherapy
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Hormonal therapy
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Antibody-based therapies
This is one reason why two people with the same cancer type may receive different treatment plans.
What Is An MDT Meeting?
MDT stands for Multidisciplinary Team.
Cancer care often involves several specialists working together.
An MDT meeting may include:
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Surgeons
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Medical oncologists
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Clinical oncologists
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Radiologists
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Pathologists
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Specialist nurses
The team reviews test results and discusses treatment options before making recommendations.
How Are Treatment Decisions Made?
Treatment decisions are based on several factors.
These may include:
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Cancer type
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Stage
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Grade
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Biomarker results
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General health
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Existing medical conditions
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Patient preferences
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Treatment goals
The recommended plan may include one or more treatments such as surgery, chemotherapy, radiotherapy, immunotherapy, targeted therapies, hormonal therapy or antibody-based therapies.
Why Does Diagnosis Sometimes Take Weeks?
Many people find waiting for results one of the most difficult parts of the cancer journey.
Diagnosis can take time because information often needs to be gathered from multiple sources, including scans, biopsies, pathology reports and specialist discussions.
Although waiting can be frustrating, this process helps ensure treatment decisions are based on the most complete and accurate information available.
Questions You May Wish To Ask Your Oncology Team
You may find it helpful to ask:
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What type of cancer do I have?
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What stage is it?
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What grade is it?
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Has it spread?
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Do I need additional tests?
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What are my treatment options?
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What is the goal of treatment?
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What side effects should I expect?
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What support is available during treatment and recovery?
Writing questions down before appointments can help make consultations easier to follow.
Where Supportive Care Fits
A cancer diagnosis affects more than the tumour itself.
Many people experience fatigue, sleep difficulties, emotional stress, uncertainty and practical challenges even before treatment begins.
Supportive care aims to help people navigate these challenges and maintain the best possible quality of life throughout diagnosis, treatment and recovery.
Understanding the diagnosis and treatment plan allows supportive care to be tailored more effectively to the individual's needs.
Understanding Treatment, Recovery and Support
Understanding cancer and its treatments can feel overwhelming. Our guides explain modern cancer treatments, common side effects, recovery and survivorship in clear, accessible language.
Managing Side Effects
➡ Why Side Effects Happen
➡ Cancer-Related Fatigue
➡ Chemo Brain
➡ Peripheral Neuropathy
➡ Xerostomia (Dry Mouth)
➡ Mucositis
➡ Skin and Nail Changes During Cancer Treatment
➡ Sleep Difficulties
Recovery & Support
➡ Cancer Support & Survivorship
➡ Carers' Wellbeing
➡ Supporting Recovery After Treatment