8990/3 Mesenchymoma, malignant


Mixed mesenchymal sarcoma


Connective, subcutaneous and other soft tissues
ICD-O-3 topography code: C49
ICD10: C49

A term describing a malignant soft tissue tumor which consists of two or more mesenchymal lines of differentiation.
A WHO Working Group concluded, that this designation does not form a well defined clinicopathological entity 1
Fletcher CDM, Unni KK, Mertens F (Eds.)
World Health Organization Classification of Tumours. Pathology and Genetics of Tumours of Soft Tissue and Bone.
3rd Edition
IARC Press: Lyon 2002

, and that a more specific sarcoma diagnosis should be used whenever possible.