An official website of the United States government
Home
SEER Inquiry System - Report
Produced: 09/12/2026 1:31 AM
Question 20100074
Inquiry Details
References:
2010 SEER Manual, 62
Question:
Laterality--Melanoma: For a melanoma case, does the term "mid" imply that the tumor is in the midline when the site is the skin of back (trunk)?
Discussion:
Answer:
Yes. When the location is described as mid-back or mid-chest with no indication of left or right, assign laterality code 5 [midline].
Cancer Site Category:
Melanoma
Data Item Category:
Laterality
Other Category:
N/A
Year:
2010
