Obviously, children's complaints are usually the result of normal childhood diseases. But when parents are concerned that their child has a persistent problem, then they should take him or her to the doctor. The findings of a physical examination may suggest that special tests are necessary to discover whether the child does in fact have a cancer.
Some signs and symptoms are not common. Any newborn child with a cat's eye—a white dot in the center of the eye— should be seen by a physician, since the dot may indicate a retinoblastoma. It is also very rare for children to have blood in their urine, so any child with this complaint should be seen by a physician. Blood in the urine may be the result of an infection, but may also be caused by Wilms' tumor . Similarly, headache in a child under three is uncommon and needs further evaluation.
