This is a case
report of a mesenchymal
tumor of
uterus in a 60 year
female initially interpreted as
myxoid leiomyosarcoma. Immunohistochemical studies were negative for
smooth muscle actin,
desmin and p53 but positive for
S-100 protein. The
tumor was therefore reclassified as a low grade malignant mesenchymal
tumor of neural origin.