A Case of Esophageal Schwannoma

Abstract

We report a rare case of esophageal schwannoma. A 75–year–old man admitted with mild dysphagia was found in gastrointestinal endoscopy to have an submucosal esophageal tumor covered with normal mucosa. Chest–abdominal computed tomography (CT) showed a well–demarcated homogenous mass on the right anterior wall of the lower thoracic to abdominal esophagus. Based on a diagnosis of esophageal submucosal tumor, we conducted lower esophagectomy with proximal gastrectomy for a 45× 32× 40 mm tumor. Microscopically, the tumor consisted mainly of vaguely palisaded spindle cells with nuclei mildly varying in size and shape. Immunohistochemical staining was positive for S–100 protein and negative for c–kit, h–caldesmon, and α–SMA, yielding a diagnosis of benign esophageal schwannoma.