The cavernous hemangioma often occur on the skin and mucosal surfaces of the body, but are also found in many viscera, particularly the liver, spleen, pancreas and occasionally in the brain. But it is rarely encountered in the mediastinum, but when found occur predominantly in the anterior mediastinum. It can occur in any age and have no characteristic symptoms or roentgenographic findings including angiocardiography. Inspite of its histologic benignancy, it may be locally invasive and can result in rib erosion or adjacent structural compression. Usually, surgical exploration is not only the sole means of assuring a diagnosis and the only treatment. Recently, we experienced one case of cavernous hemangioma in the anterior mediastinum, which was removed surgically, being proved to be cavernous hemangioma on histologic examination. Related literatures were reviewed.[KTCS 1978;1:108-111]