A neoplasm is an abnormal growth in your body that may be cancerous. If something is “neoplastic,” it has to do with the neoplasm. A paraneoplastic syndrome is a set of symptoms that are caused by a cancer. The symptoms happen in a different area of your body from your cancer.
Most people with cancer don’t get a paraneoplastic syndrome.
Paraneoplastic syndromes are caused by your cancer making hormones or your immune system Overview of the Immune System The immune system is your body's defense system. It helps protect you from illness and infection. The immune system's job is to attack things that don’t belong in your body, including: Germs... read more making antibodies (substances that protect your body against certain infection) that flow through your blood
Paraneoplastic syndromes cause different symptoms depending on the tissues and organs they occur in
About 1 out of 5 people with cancer get a paraneoplastic syndrome—it's most common with lung cancer Lung Cancer Lung cancer is cancer that starts in your lungs. Cancers that start growing in other organs may spread (metastasize) to the lungs. Cancers that have spread to your lungs aren't really considered... read more
The cancer can cause these symptoms without pushing on your nerves or spinal cord.