What Are the Stages and Grades of Soft Tissue Sarcoma?

Medically Reviewed by Jennifer Robinson, MD on November 15, 2022

Your doctor used blood tests, imaging scans (like X-rays or CT scans), and a biopsy to find out that you have a soft tissue sarcoma. The next step is to find out the stage and grade of the cancer. You might need more tests to get that information. But those details can help your doctor decide what treatments will help you the most. It also helps them predict your chance of recovery and how your condition may change later on.

The stage tells you how much cancer there is and whether it has spread to other parts of your body.

Your doctor will give your cancer a number from 1 to 4. The higher the number, the more cancer there is or the farther it has spread inside your body. Sometimes the stage will have letters after the number to give more details about your cancer.

Stages are written with Roman numerals. For instance, you may have stage II (2) soft tissue sarcoma.

The grade is part of the stage for a soft tissue sarcoma. It tells you how much the cancer cells look like normal cells, how fast they are growing, and how much of the tumor has cells that are dying. That information may give your doctor an idea of how quickly the cancer will spread.

Your doctor will give your disease a grade from 1 to 3. Cancers with a higher number tend to grow and spread faster than those with a lower grade.

For soft tissue sarcoma of the torso, arms or legs:

Stage IA (1A)

  • Tumor is 5 cm (2 inches) or smaller
  • Cancer hasn’t spread to your lymph nodes
  • It hasn’t spread to other parts of the body
  • Grade 1

Stage IB (1B)

  • Tumor is more than 5 cm (2 inches) across
  • No cancer in your lymph nodes
  • No spread to other parts of the body
  • Grade 1

Stage II (2)

  • Tumor is 5 cm (2 inches) or smaller
  • No cancer in your lymph nodes
  • No spread to other parts of the body
  • Grade 2 or 3

Stage IIIA (3A)

  • Tumor is larger than 5 cm (2 inches) across but not more than 10 cm
  • No cancer in your lymph nodes
  • No spread to other parts of the body
  • Grade 2 or 3

Stage IIIB (3B)

  • Tumor is more than 5 cm (2 inches) across
  • No cancer in your lymph nodes
  • No spread to other parts of the body
  • Grade 2 to 3

Stage IV (4)

  • Tumor is any size
  • The cancer has spread to nearby lymph nodes
  • It may or may not have spread to other parts of the body.
  • Any grade

Soft tissue sarcoma in the space behind the abdomen (retroperitoneum sarcoma) is staged a little differently.

Show Sources

SOURCES:

National Cancer Institute: “Adult Soft Tissue Sarcoma Treatment (PDQ) -- Patient Version.”

American Society of Clinical Oncology: “Sarcoma, Soft Tissue: Stages and Grades.”

American Cancer Society: “Cancer Staging,” “How Are Soft Tissue Sarcomas Staged?”

National Comprehensive Cancer Network: “NCCN Clinical Practice Guidelines in Oncology: Soft Tissue Sarcoma, Version 1.2018 -- October 31, 2017.”

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