On gross inspection, the specimen appeared as a well-circumscribed, homogeneous, tan piece of tissue with a tan-pink fleshy and mucoid cut surface (Figure 2A ).

• 肉眼大体检查，标本的边界清楚、均质、组织碎片呈黄褐色，肉质为黄褐色-粉红色，切面呈粘液样（图2A）。