肺的原发性肉瘤罕见,其影像学表现文献报道更少。本例经手术和病理证实。现报道如下。 男性,42岁,胸部透视发现左中下肺野有一边缘清晰,大小约8×9cm类圆形肿块影;痰找癌细胞多次均阴性。CT表现为团块状阴影,边缘清晰,无子灶,无分叶及毛刺,肿块内未见空洞,支气管腔内无阻塞性病理改变,仅可见外压性狭窄,肿物生长在肺野周围(图1, Primary lung sarcoma is rare and its imaging findings are reported in the literature. This case was confirmed by surgery and pathology. The report is as follows. Male, 42 years old, had a clear edge of the left-lower middle lung field with a circular mass of approximately 8×9 cm in size. CT showed mass-like shadows, sharp edges, no subfoci, no leaf divisions and burrs, no cavities in the masses, no obstructive pathological changes in the bronchial cavity, only external pressure constrictions visible, and tumors growing around the lung fields. (figure 1,