Ultrastructural and immunohistochemical features of common lung tumors: an overview.

AbstractLung cancer is rapidly becoming the most commonly diagnosed malignant neoplasm in the world. Pathologists play a key role in the care of patients with lung cancer by accurately classifying and staging these neoplasms. Immunohistochemistry and electron microscopy have become important tools in the diagnosis of lung tumors, especially those which are histologically undifferentiated. This review discusses the ultrastructural and immunohistochemical features of common lung tumors, with an emphasis on their diagnostic usefulness.