NCCN Guidelines for Patients
Peripheral T-cell Lymphoma, Version 1.2016
You’ve learned that you have or may
have peripheral T-cell lymphoma.
It’s common to feel shocked and
confused. Part 1 reviews some
basics that may help you learn about
this lymphoma and start to cope.
These basics may also help you start
planning for treatment.
What is the lymphatic system?
The lymphatic system is one of 13 systems of the
human body. It transports fluids to the bloodstream
and fights germs. As such, it supports your blood-
flowing (cardiovascular) and disease-fighting
Cells are the building blocks of tissue in the body. The
spaces between cells are filled with fluid. This fluid
is called interstitial or tissue fluid. Most tissue fluid
comes from parts of blood plasma that have passed
out of blood vessels. Cells also release waste and
other products into tissue fluid.
When tissue fluid increases, it drains into vessels.
Almost all of tissue fluid drains back into blood
vessels. The rest of it drains into lymph vessels.
Once inside of lymph vessels, tissue fluid is called
lymph. Lymph travels in lymph vessels back to the
The lymphatic system also collects fat and some
vitamins from your gut. After you eat, your stomach
turns food into a liquid. Then, the liquid drains into
6 What is the lymphatic system?
8 What is PTCL?
10 Do I have PTCL?