摘要
Pulmonary sclerosing hemangioma （PSH）, a thoracic tumor, was first described by Liebow and Hubbell in 1956. Recently, immunohistochemical evidence and characterization of antibodies have clarified that PSHs are true tumors. They are mainly composed of epithelial cells （Type II pneumocytes） aligned in different directions and accompanied by proliferation and reaction of other components.
Pulmonary sclerosing hemangioma （PSH）, a thoracic tumor, was first described by Liebow and Hubbell in 1956. Recently, immunohistochemical evidence and characterization of antibodies have clarified that PSHs are true tumors. They are mainly composed of epithelial cells （Type II pneumocytes） aligned in different directions and accompanied by proliferation and reaction of other components.
