[Giant hemangioma in the neck extending into the mediastinum required a second operation after 39 years; report of a case].

An asymptomatic 69-year-old man was admitted to our hospital for an abnormal shadow on the chest X-ray of a medical examination. He had undergone an operation for a hemangioma in the neck (incomplete resection) 39 years before admission. Computed tomography (CT) of the neck and chest revealed an giant cystic mass in the neck extended into the mediastinum, severe deviation of the trachea to the right and fluid collection in the mediastinum. It was considered to be a giant hemangioma with mediastinal hemorrhage by the rupture of the tumor. After the large afferent and efferent vessels were identified by angiography and venography, we performed the resection of the tumor. Pathological examination confirmed the diagnosis of arteriovenous hemangioma.