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NCCN Guidelines for Patients


Peripheral T-cell Lymphoma, Version 1.2016


PTCL basics



• The lymphatic system consists of lymph and

a network of vessels and organs. It helps kill

germs in the body and transports fluids to the


• Lymphomas are cancers that start in

lymphocytes within the lymphatic system.

Peripheral T-cell lymphoma starts in T-cells

that have left the thymus (mature T-cells).

• Peripheral T-cell lymphoma is often a fast-

growing cancer. Often, it will spread from one

group of tissues to the next and so on.

• Incisional or excisional biopsy is needed to

diagnose peripheral T-cell lymphoma.

• The biopsy tissue should be tested by a

hematopathologist. The hematopathologist will

perform a number of tests that assess for cell

type, surface proteins, and maybe genetics.

You may also be tested for HTLV to know

which cancer you have.