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本文分析了５３例周围型肺鳞癌的ＣＴ表现，特别是在强化扫描时的密度特点，其中２３例有病灶平扫者作了前后密度对比。５例ＣＴ表现与标本的横断面进行了对照。结果显示：４例形成不规则厚壁空洞，另４９例中，瘤体强化密度不均匀者占４２／４９，其中３４例强化时病灶内见到边缘较清楚的低密度区。通过测量１６例强化前后的代表性ＣＴ值，显示这些低密度区不强化或仅轻度强化，说明坏死区是无血管的，５例标本也证实了这一征象。瘤体大坏死面积常较大。非坏死的瘤组织强化明显，常明显高于同层面胸壁软组织的ＣＴ值。４例瘤体内见到点状钙化。
This paper analyzed the CT appearances of 53 cases of peripheral lung squamous cell carcinoma, especially the density characteristics of the enhanced scan, of which there were 23 plain lesioners who had before and after contrast. The CT findings of 5 cases were compared with the cross sections of the specimens. The results showed that 4 cases had irregular thick-walled cavities, and in 49 cases, uneven density of tumor enhancement accounted for 42/49, of which 34 cases showed a clear low-density area in the lesion. By measuring the representative CT values before and after enhancement in 16 cases, it was shown that these low-density areas were not enhanced or only mildly enhanced, indicating that the necrotic area was avascular, and the 5 samples also confirmed this sign. Large tumor necrosis area is often larger. Non-necrotic tumors were significantly enhanced and were often significantly higher than the CT values of the same level of chest wall soft tissue. Spot calcification was seen in 4 tumors.