描述右侧颈总动脉分叉处后壁可见一大小约11

毫米的占位性病变，密度不均匀，边界清晰，周围无明显水肿，未见明显钙化。

Translation: An occupying lesion of approximately 11 mm in size was observed on the posterior wall of the bifurcation of the right common carotid artery. The density of the lesion was uneven, the boundary was clear, and there was no obvious edema around it. No obvious calcification was observed.