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Lung Carcinosarcoma Report of One Case Treated With Immunotherapy with Review

Pulmonary Carcinosarcoma is an uncommon malignant biphasic tumor that accounts for less than 1% of all lung cancers. It is defined by coexisting histologic elements of carcinomatous and sarcomatous components. We report a case of advanced stage pulmonary carcinosarcoma in a 83-year-old patient, treated with immunotherapy with good response lasted for more than one year.