An official website of the United States government
Home
SEER Inquiry System - Report
Produced: 04/25/2026 4:58 PM
Question 20150054
Inquiry Details
References:
WHO Class Skin Tumors, 251. 2006
Question:
Primary Site--Skin: Should cutaneous leiomyosarcoma be coded to primary skin of site (C44_) or soft tissue (C49_)?
Discussion:
Answer:
Code cutanteous leiomyosarcoma to skin. Leiomyosarcoma can originate in the smooth muscle of the dermis. The WHO classification designates this as cutaneous leiomyosarcoma. The major portion of the tumor is in the dermis, although subcutaneous extension is present in some cases.
Cancer Site Category:
Skin
Data Item Category:
Primary site
Other Category:
N/A
Year:
2015
