Sarcomatoid carcinoma of the lung – a new tumor entity?

Sarcomatoid carcinoma (SC) of the lung are rare subtypes and are regarded as one type of lung carcinoma, termed pleomorphic carcinoma in the AFIP. This classification is different from the new WHO classification. Till now the term sarcomatoid carcinoma is not well known by clinicans and pathologist and this tumor entity has to be separated from sarcomas of the lung. Under this aspect 15 cases of sarcomatoid carcinoma of the lung were investigated concerning the morphological characteristics as well as the immunohistochemical reaction pattern of the tumor cells. Due to the morphological results three different gr…