Understanding Childhood Cancer: Types, Symptoms, and Treatment Options

The moment a parent hears their child might have cancer, the world stops spinning, and nothing else matters beyond getting answers and finding the best care possible.

Perhaps your child has been unusually tired for weeks, or you've noticed unexplained bruising that prompted the paediatrician to order blood tests.

Understanding what is childhood cancer helps you navigate the frightening journey ahead while maintaining hope rooted in knowledge rather than fear driven by uncertainty.

Let’s explain what childhood cancers are, how they differ from adult cancers, and what treatment approaches offer children the best possible outcomes today.

What is childhood cancer?

Childhood cancer refers to malignancies developing in children from birth through adolescence (typically defined as under 19 years old).

Unlike adult cancers that often result from environmental exposures and lifestyle factors accumulated over decades, childhood cancers typically arise from random genetic errors during rapid growth and development.

The encouraging news is that overall childhood cancer survival rates have improved dramatically, from less than 30% in the 1960s to approximately 80-90% today in countries with advanced healthcare systems.

Types of childhood cancer

The types of childhood cancer differ substantially from adult malignancies, with children rarely developing the common adult cancers like lung, breast, or colon cancer.

Leukaemia

Key characteristics include:

• •Rapid onset of symptoms over weeks
• •Bone marrow produces abnormal lymphoblasts
• •Excellent cure rates (85-90% in developed countries)
• •Treatment typically lasts 2-3 years

Brain and spinal cord tumours

Central nervous system tumours represent the second most common form of childhood cancer, accounting for 20-25% of paediatric malignancies.

Lymphomas

Neuroblastoma

This type develops from immature nerve cells, typically arising in the adrenal glands or along the spine.

Neuroblastoma characteristics:

• •Most commonly diagnosed in infants and toddlers
• •Often spreads before causing symptoms
• •Can sometimes regress spontaneously in infants
• •Prognosis varies dramatically by age and stage
• •Older children with advanced disease face poorer outcomes

Bone and soft tissue sarcomas

List of rare childhood cancers

List of rare childhood cancers includes:

Signs and symptoms of childhood cancer

General warning signs of childhood cancer include:

• •Persistent fatigue:
  Unusual tiredness not improving with rest
• •Unexplained weight loss:
  Losing weight without dietary changes
• •Fever without infection:
  Prolonged unexplained fevers
• •Frequent infections:
  Recurrent infections suggesting immune problems
• •Easy bruising or bleeding:
  Small bruises appearing without trauma, nosebleeds, bleeding gums

• •Pale skin from anaemia
• •Bone or joint pain (often mistaken for growing pains)
• •Swollen lymph nodes in neck, armpits, or groin
• •Enlarged liver or spleen causing abdominal swelling

• •Morning headaches improving after vomiting
• •Vision changes or eye movement abnormalities
• •Balance or coordination difficulties
• •Behavioural or personality changes
• •Seizures in children without prior history

• •Painless lumps in neck, armpit, or groin
• •Night sweats drenching bedclothes
• •Unexplained fever and weight loss
• •Cough or breathing difficulty from chest masses

What causes childhood cancer?

Childhood cancer causes differ fundamentally from adult cancer causes, with most paediatric malignancies arising from random errors during normal cell division.

Known causes of cancer in childhood include:

• •Li-Fraumeni syndrome
• •Neurofibromatosis
• •von Hippel-Lindau disease
• •Familial retinoblastoma
• •Constitutional mismatch repair deficiency

Some maternal exposures during pregnancy may slightly increase risk:

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• •X-rays or other radiation
• •Certain medications or chemicals
• •Alcohol consumption

Unlike adult cancers, childhood malignancies are not caused by:

• •Lifestyle factors (diet, exercise, obesity in most cases)
• •Environmental toxin exposure in most instances
• •Parental behaviours before or during pregnancy
• •Childhood vaccinations
• •Injuries or trauma

How childhood cancer is diagnosed

Childhood cancer diagnosis requires a systematic evaluation that combines clinical assessment, imaging, laboratory tests, and tissue analysis.

Initial evaluation and tests

Paediatricians assess symptom duration and progression, family history of cancer or genetic conditions, prior radiation or chemotherapy exposure, and congenital abnormalities.

Physical examination includes careful palpation for masses, lymph node assessment, and neurological evaluation.

Imaging and laboratory tests

• •X-rays: Initial evaluation of bone pain or chest symptoms
• •Ultrasound: Abdominal masses, kidney tumours
• •CT scans: Detailed organ and tissue visualisation
• •MRI: Superior soft tissue imaging, essential for brain tumours
• •PET scans: Assess disease extent and treatment response
• •Bone scans: Detect bone metastases

Biopsy and genetic testing

Treatment options for childhood cancer

Childhood cancer treatments have evolved dramatically, with protocols specifically designed for children's unique needs.

Chemotherapy

Chemotherapy principles in children:

• •Multiple drugs combined for synergistic effects
• •Intensive treatment over months to years
• •Better tolerance than adults for high-dose regimens
• •Cure rates substantially higher than adult cancers

Surgery

Surgical removal of solid tumours when feasible improves outcomes substantially.

Surgical approaches:

• •Complete resection for localised tumours (Wilms tumour, hepatoblastoma)
• •Debulking surgery reducing tumour burden before other treatments
• •Second-look surgery after chemotherapy shrinks initially unresectable tumours
• •Minimally invasive techniques when appropriate

Radiation therapy

External beam radiation treats many childhood cancers while minimising long-term effects on growing tissues.

Modern radiation techniques:

• •Intensity-modulated radiation therapy (IMRT) precisely targets tumours
• •Proton beam therapy reduces exposure to surrounding normal tissues
• •Stereotactic radiosurgery for brain tumours

Targeted therapy and immunotherapy

Newer treatments targeting specific cancer characteristics or harnessing immune responses show tremendous promise.

Targeted therapy examples:

• •Imatinib for certain leukaemias with specific mutations
• •ALK inhibitors for neuroblastoma
• •BRAF inhibitors for melanoma

Immunotherapy approaches:

• •CAR-T cell therapy for relapsed ALL (revolutionary treatment)
• •Checkpoint inhibitors showing activity in some childhood cancers
• •Monoclonal antibodies targeting specific cancer antigens

Multidisciplinary treatment approach

Treating childhood cancer effectively requires a specialised team of doctors, nurses, therapists, and support staff all working together at dedicated paediatric cancer centres.

Children treated at these specialised centres have significantly better outcomes than those treated at general hospitals, because the teams have specific expertise in childhood cancers, which behave very differently from adult cancers.

Conclusion

Childhood cancer represents one of the most devastating diagnoses any family can face, yet tremendous progress in treatment offers genuine hope for a cure in the majority of cases.

While childhood cancer prevention isn't completely possible given that most cases arise from random genetic events, early recognition of signs of childhood cancer and treatment with specialised paediatric oncology centres is crucial.

For specialised evaluation, accurate diagnosis, and treatment of childhood cancers, connect with experienced paediatric oncology specialists at Everhope - equipped to provide the expert multidisciplinary care children deserve.