Figure 1. (a) Solitary polyp measuring 1 - 2 cm covered by normal-appearing mucosa was found in the esophagus distal to the GE junction. (b) Micrographic examination (× 40) shows squamous cell epithelium and tumor cells. (c) High power micrographic examination (× 100) shows granular cytoplasm containing cells. (d) S100 positivity in GCT.