CYTOLOGIC DIAGNOSIS OF METASTATIC EPITHELIOID SARCOMA - A CYTOLOGIC MIMIC OF SQUAMOUS-CELL CARCINOMA

A case of epithelioid sarcoma in a 39-year-old woman who had metastati c lesions in her lung from a primary arm tumor is presented. A review of the literature and analysis of this case did not identify any speci fic light microscopic or immunohistochemical way to separate definitiv ely the lung cytologic smear in this case from squamous cell carcinoma . The authors believe cytologic smears from epithelioid sarcoma can cl osely mimic smears from squamous cell carcinoma. Pathologists should b e alert to these similarities.