Osteosarcoma - Childhood and Adolescence: Symptoms and Signs

Approved by the Cancer.Net Editorial Board, 08/2019

ON THIS PAGE: You will find out more about body changes and other things that can signal a problem that may need medical care. Use the menu to see other pages.

The symptoms of osteosarcoma depend on the bone in which the tumor developed. Children and teens with osteosarcoma may experience the following symptoms or signs. Sometimes, children and teens with osteosarcoma do not have any of these changes. Or, the cause of a symptom may be a different medical condition that is not cancer.

  • Pain in a bone or joint that gets worse over time, especially if the pain is severe enough so that it interferes with sleep

  • A noticeable mass or lump in an arm or leg, particularly in the areas around a shoulder or knee

  • A broken bone with no injury to explain how it occurred

  • Back pain or a loss of bowel or bladder control. These symptoms can occur if the tumor is in the pelvis or at the base of the spine. These are very uncommon symptoms.

Osteosarcoma seems to relate to rapid bone growth because it most often occurs around the age when most adolescents' bodies go through their growth spurt. It is also slightly more common in boys than girls, which may be related to boys usually being taller on average. If you are concerned about any changes your child experiences, please talk with your child’s doctor. Your doctor will ask how long and how often your child has been experiencing the symptom(s), in addition to other questions. This is to help figure out the cause of the problem, called a diagnosis.

If cancer is diagnosed, relieving symptoms remains an important part of cancer care and treatment. This may be called palliative care or supportive care. It is often started soon after diagnosis and continued throughout treatment. Be sure to talk with your child’s health care team about the symptoms your child experiences, including any new symptoms or a change in symptoms.

The next section in this guide is Diagnosis. It explains what tests may be needed to learn more about the cause of the symptoms. Use the menu to choose a different section to read in this guide.