Cancer can be diagnosed at any age. It’s upsetting for all patients, but if the patient is a child, sorrow knows no bounds. Cancer spoils a child’s childhood and brings lots of life changes. The cancers that are common in children are different from adult cancers. 
 
What will happen to my child? How will my child cope with the pain and suffering of cancer? Will my child be cured? How should I treat my child? These are very common thoughts that come to parents' minds.
 
What are the most common cancers in children?

Leukemia
Leukemia is the most commonly diagnosed cancer in children. This is a cancer of blood and bone marrow. According to the American Cancer Society, approximately 28% of childhood cancers are leukemia. Acute lymphocytic leukemia and acute myeloid leukemia are the two most common types of leukemia in children.
Symptoms include fatigue, weakness, bone and joint pain, pale skin, fever, weight loss, and bleeding on the skin.

Brain and spinal cord tumors
This is the second most common cancer in children and accounts for almost 26% of total childhood cancer. Brain tumors are mostly found in the lower parts of the brain, such as the cerebellum or brain stem. Spinal cord tumors are very often found in children.
Symptoms include headaches, nausea, vomiting, blurred vision, dizziness, and seizures. 
 
Neuroblastoma
This type of cancer is mostly found in infants and young children, and it accounts for 6% of total childhood cancer. In most cases, it starts in the belly.
Symptoms include swelling, bone pain, and fever.
 
Nephroblastoma
It is mostly found in children aged from 3 to 4 years. It starts in one or both kidneys. Almost 5% of total childhood cancer is nephroblastoma.
Symptoms include swelling or lump in the belly, fever, pain, nausea, or poor appetite.
 
Lymphoma (including both Hodgkin and non-Hodgkin)
It affects lymphocytes, lymph nodes or other lymph tissues, bone marrow, and other organs. The two main types of lymphoma, Hodgkin and non-Hodgkin lymphoma, account for 3% and 5% of childhood cancer, respectively.
Symptoms include weight loss, fever, sweats, fatigue, and lumps under the neck or armpit skin.
 
Rhabdomyosarcoma
This affects skeletal muscles and can start in any place in the body, such as the head and neck, groin, belly, pelvis, arm, or leg. It accounts for 3% of childhood cancer.
Symptoms include pain and swelling.
 
Retinoblastoma
This is a cancer of the eye and accounts for 2% of childhood cancer. Children of 2 years or around it are the victims of this type of cancer.
Symptoms include white or pink pupils. 
 
Bone cancer 
Cancer starts in the bone, and it accounts for almost 3% of total childhood cancer.
Symptoms include swelling and pain.