Colon Schwannoma:A Case Report

Schwannoma, also termed neurilemmoma, arises form Schwann cells, which cover the peripheral nerves. It commonly occurs in the peripheral nerve of the limbs or body, spinal cord, and the central nervous system. Occasionally, Schwannomas can occur elsewhere, including subcutaneous t issue, the re t roper i toneum, mediastinum, vulva, breast, larynx, and foot. There has been a relatively small number of gastrointestinal schwannomas reported. The incidence of submucosal schwannoma has been reported to range from 0.4% to 1% of all submu-cosal tumor of gastrointestinal tract. In particular, schwannoma occurring in the large intestine is extremely rare. The incidence of colon schwannoma is equal among men and women. Worldwide distribution had not been reported. Rare genetic factors had been identified except for those with Neurofibromatosis. Intracranial schwannoma had been reported in Taiwan, but to our knowledge, few gastrointestinal schwannoma has been reported. We herein report a case of colon schw-annoma and review the previous reports of benign schwannoma of the colon. Abstract