The most common cancer that makes someone have night sweats or makes someone sweat at night is the cancer Lymphoma Cancer.
Night sweats are sometimes a common symptom or sign that you may be developing Lymphoma Cancer but not always.
When you do have cancer or are developing cancer and are sweating at night as a result you will usually have other problems such as unexplained weight loss and fevers.
If you think you may have cancer or may be developing cancer such as Lymphoma you should get tested by your doctor because if Lymphoma is caught in time and treated in time then your survival rate goes up.