TABLE 3. Results of Immunohistochemical Studies
Antibody No. of Cases Studied No. of Positive Cases

Cytokeratin 9 7 (78)
Epithelial membrane antigen 6 6 (100)
Desmin 9 7 (78)
Vimentin 7 7 (100)
CD99 6 2 (33)
Neuron-specific enolase 5 5 (100)
Muscle-specific actin 4 0 (0)
Smooth muscle actin 2 0 (0)

Note.—Values in parentheses are percentages.