Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Preoperative image and tumor biopsy images. (A) Endoscopic image taken before chemotherapy showing the tumor with a smooth surface in the lower esophagus. Histopathologically, H & E staining showed that the spindle tumor cells had no mitotic activity, as shown at × 200 (B). The tumor cells were positive for c-kit, as shown at × 200, (C) and CD34, as shown at × 200, (D) using immunohistochemistry.
