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SEER Training Modules

Review: Staging Systems

Here is what we have learned from Staging Systems:

  • There are two staging classifications developed by SEER: extent of disease and summary stage. Extent of disease (EOD) coding is required for all SEER programs funded through the National Cancer Institute.
  • Summary staging is the most basic staging system and it is based on the theory of cancer growth, which uses all information available in the medical record, clinical, and pathological.
  • The EOD coding scheme consists of a ten-digit code. It incorporates three digits for the size and/or involvement of the primary tumor, two for the extension of the tumor, and one more as a general code for lymph node involvement. Four more digits are used after these six: two for the number of pathologically positive regional lymph nodes and two more for the number of regional lymph nodes that are pathologically examined.
  • The AJCC staging scheme is based on the evaluation of the T, N, and M components and the assignment of a stage grouping.
  • FIGO is a gynecologic staging scheme based on clinical staging and careful clinical examination before any definitive therapy has begun.
  • Duke's staging (generic term) is a pathological staging based on resection of the tumor and measures the depth of invasion through the mucosa and bowel wall, and it is used for colon and rectum.
  • Two classification schemes are often used for melanoma: Breslow's microstaging and Clark's Level of Invasion.

Quiz

Go to the quiz if you want to test yourself on the material you learned in this section. The quiz is a self-assessment tool and no records are kept. The feedback will let you know if you have answered the questions correctly. You can take the quiz as many times as you want.

Click here to take the quiz.