肿瘤边缘呈分叶状，2例患者显示中鼻甲或上颌窦内侧壁骨质吸收。
The surface configuration of the tumors was lobulated, and 2 cases showed bony absorption of the middle turbinate or the maxillary sinus.
原发性肿瘤多表现为椭圆形或分叶状不均匀低回声肿块。
Oval or lobulated heterogeneous hypoechoes were the diagnostic features of primary omental tumors.
组织病理学检查示肿瘤呈分叶状增生，与表皮相连，主要由向外毛根鞘分化的鳞状上皮组成，周边基底细胞排列成栅栏状。
They were mainly consisted of epithelia differentiated towards cells of the outer root sheath, and the peripheral basal cells of the tumor lobules showed palisading arrangement.
全部肿瘤边缘呈分叶状。
肿瘤椭圆形18例，不规则形4例，边缘不规则呈现分叶状或结节状8例。
The tumors showed oval shape in 18 cases, irregular shape in 4 cases, irregular margin shape in 8 cases.
肿瘤椭圆形18例，不规则形4例，边缘不规则呈现分叶状或结节状8例。
The tumors showed oval shape in 18 cases, irregular shape in 4 cases, irregular margin shape in 8 cases.
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