There is no strict definition of what separates “childhood cancers” from cancers in young adults, or when exactly a person is no longer a young adult.
But for statistics purposes, cancers in young adults are often thought of as those that start between the ages of 20 and 39.
Cancer starts when cells begin to grow out of control.
Cells in nearly any part of the body can become cancer, and can spread to other areas of the body.
Many other types of cancer can occur in teens and young adults as well. It’s rare before age 30, but it becomes more common as women age.
Among young adults, the outlook tends to be better in those who are older at the time of diagnosis.
There are 2 main types of lymphoma: Both types can occur in young adults.
Non-Hodgkin lymphoma (NHL) is less common than Hodgkin disease in young adults, but the risk of NHL goes up as people get older. Some of the types seen more often in young adults tend to grow quickly and require intensive treatment, but they also tend to respond better to treatment than NHL in older adults.
The most common sign of breast cancer is a new lump or mass that’s often hard and painless, although some cancers are soft, tender, or even painful.
Young women often have breast lumps that are not cancer.
They can cause different symptoms depending on where the cancer is.
Most common symptoms include weight loss, fever, sweats, tiredness, and lumps (swollen lymph nodes) under the skin in the neck, armpit, or groin.
Some of the most common cancers in young adults are: Even within this age group, some of these cancers become more or less common as people age.