A well circumscribed nodular mass discovered on routine chest ray examination, was excised from the left lung interlobar fissure of a 67 years old woman. Histologically the lesion corresponded to a typical "so called sclerosing hemangioma" according to Liebow and Hubbell's originally description. Because of the uncertain histogenesis we utilized histochemistry and immunohistochemistry to support the hypothesis of an epithelial origin.