颈部深筋膜间隙是由颈深筋膜的三层结构即浅层、中层、深层分界围成的多个不同的功能性筋膜间隙[1～ 2 ] 。通过限定病变所属筋膜间隙 (当病变较小局限在单一间隙时 )或病变中心所处间隙位置 (当病变较大呈跨间隙或多间隙生长时 ) ,结合临床和病变的ＣＴ影像学特征 ,在一定程度 Deep cervical fascia gap is composed of three layers of deep cervical fascia membrane structure that is shallow, middle and deep boundaries surrounded by a number of different functional fascia [1 ~ 2]. By defining the location of the fascia to which the lesion belongs (when the lesion is confined to a single interspace) or where the lesion center is located (when the lesion is large across the interstitial space or multiple interstitial space), combined with clinical and pathological CT features, To a certain extent