When a child has a suspected tumour, parents naturally want to know what it is and what needs to happen next. A biopsy may help establish the diagnosis, while staging investigations help determine the extent of the disease. The tests and procedures required depend on the suspected tumour, the child's condition and the information needed to plan treatment.
A biopsy involves taking a small sample of tissue, or sometimes removing a lesion, so it can be examined in a laboratory. This helps doctors understand what the tissue is and whether it contains cancer cells.
The pathology report may identify the tumour type and provide information needed to decide whether further tests are required. Some childhood tumours need specialised laboratory tests (molecular) to help classify the disease more precisely.
A biopsy result is interpreted alongside the child’s examination, scan findings and medical history. In some cases, the first sample may not provide enough information, and further testing or another sample may be needed.
A biopsy is therefore an important step in diagnosis, but it is not always the only investigation required.
The method used to obtain a tissue sample depends on the tumour’s location, size and suspected type. The surgeon also considers how much tissue is needed and how to collect it safely.
Core needle biopsy
A needle is used to collect small pieces of tissue. Imaging, such as ultrasound or CT, may help guide the needle to the right area. This method can provide useful tissue samples without requiring a larger incision.
Incisional biopsy
The surgeon removes a small part of the tumour for examination. This may be considered when a needle biopsy is not suitable or has not provided enough information.
Excisional biopsy
The entire lesion is removed for examination in selected cases. This approach is not appropriate for every suspected tumour, particularly when removing it without a planned surgical approach could affect later treatment.
The choice should be made after reviewing the clinical findings and imaging. A lump that appears straightforward should not automatically be removed without considering whether it could be a tumour requiring specialist planning.
A biopsy needs careful planning because the procedure may affect the surgery required later.
For certain childhood tumours, the surgeon must consider where the sample will be taken from and how the biopsy area may be managed during definitive surgery. The biopsy route or incision may need to be removed along with the tumour in a later operation.
Imaging helps identify the tumour’s position and its relationship with nearby organs, nerves and blood vessels. This information can guide the safest way to obtain a useful tissue sample.
Where possible, the surgeon who may perform the definitive operation should be involved in planning the biopsy. This is particularly important for suspected soft-tissue cancers, where an unplanned procedure can complicate subsequent surgery.
Parents should therefore seek medical advice before arranging the removal of a suspicious lump. The right first step can help preserve appropriate treatment options.
Once the tissue sample has been collected, it is examined by a pathologist. The report may help establish the tumour type and identify features that influence further investigations and treatment planning.
Some samples require additional tests to clarify the diagnosis. Depending on the suspected tumour, these may include specialised staining or molecular tests. The type of testing needed varies, so not every child will require the same investigations.
The results are reviewed alongside the child’s scan findings and clinical history. If the findings do not provide a clear answer, the medical team may recommend further review, additional testing or another biopsy.
Parents should ask the treating team to explain what the report establishes, whether any results are still pending and how the findings affect the next steps.
After a tumour is diagnosed, doctors may need to determine whether it remains in one area or has spread to other parts of the body. This process is called staging.
The investigations depend on the type of cancer. They may include imaging, blood tests, pathology findings and other tests selected for the suspected diagnosis. Some children may also need a procedure to assess particular lymph nodes or other areas.
Staging is important because the extent of the disease can influence the treatment plan. However, there is no single staging process that applies to every childhood tumour.
A biopsy and staging are related but different. A biopsy helps identify the tumour, while staging assesses how extensive the disease is. The treating team uses the available findings to decide which further investigations are necessary.
Lymph nodes are small structures that form part of the body’s immune system. Some childhood cancers can spread to nearby lymph nodes, but the need to assess them depends on the type and location of the tumour.
Doctors may examine lymph nodes through imaging and, in selected cases, recommend tissue sampling or a surgical procedure. The appropriate method depends on the suspected cancer and the information needed to establish the extent of the disease.
For example, particular childhood soft-tissue sarcomas may require specific lymph node assessment even when the nodes do not appear abnormal on imaging. This approach is not necessary for every childhood tumour.
Lymph node surgery should therefore be based on the diagnosis and its treatment protocol, rather than performed routinely in all children with suspected cancer.
Sometimes, the first set of results does not provide a complete answer. A tissue sample may be too small, the findings may be difficult to classify, or the pathology report may not fully match the scan results.
In these situations, the medical team may review the existing images and pathology findings together. Further laboratory tests, specialist pathology review or another biopsy may be considered if more information is needed.
This does not automatically mean that the original procedure was performed incorrectly. Some tumours are difficult to diagnose from a limited sample, and additional investigation may be necessary to reach a reliable conclusion.
Parents can ask what remains uncertain, why further testing is recommended and how the results could affect the treatment plan.
A consultation is an opportunity to understand why a biopsy or staging procedure may be needed and what the next steps could involve.
If available, bring:
Parents may also wish to ask which biopsy method is being considered, what preparation is required, when results may be available and whether further investigations could be needed.
Instructions about fasting, medicines and preparation should come from the treating team, as these depend on the planned procedure and the child’s health.
No. A biopsy examines tissue to help establish a diagnosis. The findings may show cancer, a non-cancerous condition or results that require further investigation.
Yes, in selected cases. Another biopsy may be recommended if the first sample does not provide enough information or if further tissue is needed to clarify the diagnosis.
No. Staging depends on the type of tumour. Some children need a specific surgical procedure, while others can be assessed using imaging, pathology and other investigations.
The medical team may arrange additional laboratory tests, review the existing sample or consider another biopsy. The next step depends on what information is missing.
Ask why the biopsy is needed, which method is planned, what preparation is required, when results may be available and how the findings could influence the next stage of treatment.
If your child has a suspected or diagnosed tumour, a specialist surgical consultation can help clarify which investigations or procedures may be appropriate.
Dr. Monica Bhagat can review the child's available medical records and discuss the proposed surgical assessment, subject to the services provided in the clinical setting. The aim of the consultation is to help parents understand the diagnosis, the purpose of the recommended procedure and the next steps in care.
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