8897/1 Smooth muscle tumor, NOS


Corpus uteri
ICD-O-3 topography code: C54

Smooth muscle tumour of uncertain malignant potential is a smooth muscle neoplasm arising from the uterine corpus that cannot reliably be diagnosed as benign or malignant, because of ambiguous morphologic findings. In some cases, the subtype of smooth muscle differentiation (standard, epithelioid, or myxoid) cannot be determined with certainty. In other cases, diagnostic features, such as type of necrosis or interpretation of mitotic figures, are ambiguous. Differing interpretations make reliable clinical predictions impossible1
Tavassoli FA, Devilee P (Eds.)
World Health Organization Classification of Tumours. Pathology and Genetics of Tumours of the Breast and Female Genital Organs.
3rd Edition
IARC Press: Lyon 2003