Takuya Morita

A case of schwannoma of the mesoesophagus displaced from the left to the right of the posterior mediastinum

Although schwannomas are the most common neurogenic tumors found in the thorax, schwannomas of the mesoesophagus are extremely rare. We report a case of an 80-year-old man having a tumor in contact with the esophagus in the left posterior mediastinum. A preoperative follow-up computed tomography scan showed tumor displacement from the left to the right of the posterior mediastinum. The patient underwent surgery, and the tumor was diagnosed as a schwannoma of the mesoesophagus. The tumor might have been displaced from the left to the right of the posterior mediastinum because it was located in the mesoesophagus.

Extramedullary Plasmacytoma Arising From the Anterior Mediastinum

Plasmacytomas are a localized proliferation of plasma cells in the bone marrow and soft tissue. Extramedullary plasmacytomas are rare and typically solitary plasma cell neoplasms originating from extraosseous organs and tissues. A 31-year-old woman was referred to our hospital with a rapidly growing abnormal shadow on a chest roentgenogram. Chest computed tomography showed that the lesion was located in the anterior mediastinum. She underwent surgery, and the tumor was diagnosed as an extramedullary plasmacytoma. She remains well 2 years postoperatively without recurrence. An extremely rare case of an anterior mediastinal extramedullary plasmacytoma is presented.