Abstract
A 43-year-old male was admitted to our hospital with complaints of swelling of the neck and dysphagia. He had a large mass in the neck. Roentgenograms and CT scans of the neck and the chest revealed a tumor located from the neck to the posterior mediastinum, antero-lateral to the vertebrae and extending to both sides. The hypopharynx, larynx, esophagus and trachea were shifted anteriorly. The density of the tumor was heterogeneous ; that is, multiple highdensity funiculi were seen in the fatty density the CT number of which was 44 HU. We therefore suspected that he had cervicomediastinal liposarcoma, and performed an operation. Because the tumor was encapsulated and nearly noninvasive, extripation of it via a U-shaped collar incision and median sternotomy was performed successfully. The pathological diagnosis was well-differentiated liposarcoma. The patient had no additional therapy and remains free of disease one year and nine months after the operation.
