I went to a group activity, “Sensitivity Sunday”, which was to make us more aware of the problems were faced by disabled people. We were asked to “adopt ﹀disability” for several hours on one Sunday. Some members, as me, chose the wheelchair. Other wore sound-blocking earplugs or blindfolds. Just sitting in the wheelchair is a learning experience. I had never considered before how awkwardly it would be to use one. As soon as I sat down, my weight made the chair begin to roll with its wheels were not locked. Then I wondered how to put my feet. It took me quite a while to get the metal footrest into place. My wheelchair experiment was soon finished. It made a deep expression on me.

女，50岁，左下颈部扪及一质硬、表面高低不平的包块，肿块逐渐增大，现感吞咽困难，CT如图所示，最可能诊断为（）。

A.甲状腺癌

B.食管癌

C.喉癌

D.甲状腺原发淋巴瘤

E.颈部神经鞘瘤