Leukemia is the most common type of childhood cancer, accounting for about 30% of all cases.

The survival rate for childhood cancer has improved significantly over the past few decades and is now around 85-90%.

Constipation is not a common symptom of childhood cancer.

Medulloblastoma is the most common type of brain cancer in children.

Burkitt lymphoma is often associated with Epstein-Barr virus.

Non-Hodgkin lymphoma is the most common type of childhood lymphoma.

Targeted therapy is not a common treatment for childhood cancer.

Stage 4 is the most common type of neuroblastoma.

Constipation is not a common side effect of chemotherapy.

Unilateral is the most common type of retinoblastoma.

Sarcoma is not a common type of childhood cancer.

Favorable histology is the most common type of Wilms tumor.

Chemotherapy is not a common treatment for retinoblastoma.

Mixed epithelial-mesenchymal is the most common type of hepatoblastoma.

Neuroblastoma is not a common type of childhood cancer.