The growth is primarily exophytic (outward into the lumen) and invasion is not seen at this point.
The growth is primarily exophytic (outward into the lumen) and invasion is not seen at this point.
生长最初是外生性的（朝向腔内），不见浸润。
The growth is primarily exophytic (outward into the lumen) and invasion is not seen at this point.
生长最初是外生性的（朝向腔内），不见浸润。