NCCN Guidelines for Patients
Rectal Cancer, Version 1.2017
Part 5 is a treatment guide for rectal
cancer that has spread to the liver or
lungs but not elsewhere. Treatment
options are partly based on whether
the metastasis was found at diagnosis
or recurrence. Treatment for other
metastases is discussed in Part 6.
The spread of cancer to distant sites—metastatic
disease—occurs in at least half of people with
colorectal cancer. Colorectal cancer most often
spreads to the liver. Among every 100 people with
colorectal cancer, 20 to 34 people will have liver
metastases at diagnosis. Most options for liver
metastases also apply to lung metastases.