The patient was a 45-year-old man who had positive results of a fecal occult blood test on a medical examination. A colonoscopic examination revealed a submucosal tumor measuring 7 mm in diameter in the cecum. Colorectal endoscopic submucosal dissection (ESD) was thus performed for diagnosis and therapy. A schwannoma was diagnosed on the basis of Immunostaining of the resected specimen. To our knowledge, treatment of a cecal schwannoma by ESD has not been reported previously in Japan. We therefore believe that this is the first report to document the treatment of a cecal schwannoma by ESD in Japan and consider this case report very valuable.
