“…Microscopically, IFP shows the cellular proliferation possibly originating from the submucosa, and is composed of a fibrous and edematous stroma containing many variable-sized blood vessels, spindle cells and diffuse inflammatory cells infiltrate, including eosionphils, plasma cells, lymphocytes, macreophages, and mast cells 1-9,11,12. In immunohistochemistry for CD34, S100, c-kit, Bcl-2, and p53, spindle cells of polyp often are stained with CD34 or S100 antibodies but do not react to c-kit, or Bcl-2, or p53 antibodies 4,5.…”