SEER Inquiry System - Question 20021017 Details

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Produced: 10/18/2025 5:49 AM

Question 20021017

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Inquiry Details

References:

SEER EOD-88, 3rd Ed, 102

Question:

Measured Thickness--Melanoma: Can in situ melanoma cases have "depth of invasion" coded to something other than 999? See discussion.

Discussion:

Biopsy of the left arm: Melanoma, 0.2mm in thickness. The in situ component extends to a peripheral margin.

Answer:

For cases diagnosed 1998-2003:

Code the Measured Thickness (depth) field to 020 [0.2 mm] for this case.

In situ disease can have a depth of invasion because the surface epithelium can be of varying depths without the melanoma breaking through the basement membrane.

Cancer Site Category:

Melanoma

Data Item Category:

N/A

Other Category:

N/A

Year:

2002